Thamnophilus doliatus   BARRED ANTSHRIKE.  Thickets, savanna, riparian growth, scrub, mangroves, towns.  Lowlands to 2000 m from Mexico in e San Luis Potosí, s Tamaulipas, Veracruz, e Puebla and Oaxaca s along both slopes, incl. Yucatán Pen. and Cozumel I., to Panama, incl. Coiba and Pearl is., and from n,c,e Colombia, Venezuela, Trinidad, Tobago and Guianas s, e of Andes, through e Ecuador, e Peru, Bolivia and Brazil to Paraguay and n Argentina. 
The form cadwaladeri may be a separate species, as suggested by Ridgely and Tudor (Birds of S. Amer., 2:229).

Thamnophilus zarumae  CHAPMAN'S ANTSHRIKE.  Foothills of sw Ecuador and nw Peru.  Differs from doliatus in vocalizations, plumage and size.  Treated as a full species by Ridgely and Tudor (Birds of S. Amer., 2:229).  Includes T. z. palamblae.
Thamnophilus multistriatus   BAR-CRESTED ANTSHRIKE.  Forest undergrowth, edge.  Andes, 1500-2650 m, of Colombia and extreme nw Venezuela.
Thamnophilus palliatus   LINED ANTSHRIKE.  Forest, edge, thickets, woodland.
 T. p. tenuepunctatus  Lowlands to 1900 m, e of Andes, from e Colombia s through e Ecuador and n Peru.  The tenuepunctatus subspecies group closely approaches the palliatus group in San Martín, Peru, without evidence of intergradation and was treated as a separate species by Ridgely and Tudor (Birds of South America, vol. 2:230). 
If this is accepted the palliatus group would be called the Chestnut-backed Antshrike.  However, the two groups are vocally similar.
 T. p. palliatus  E Peru, n,e Bolivia and Amazonian,e Brazil.

Thamnophilus bridgesi   BLACK-HOODED ANTSHRIKE.  Forest undergrowth, edge, thickets, second-growth woodland, mangroves.  Pacific lowlands to 1100 m of w Costa Rica and w Panama.
Thamnophilus nigriceps   BLACK ANTSHRIKE.  Humid forest undergrowth, edge, dense second growth.  Lowlands to 750 m of e Panama and n,c Colombia.
Thamnophilus praecox   COCHA ANTSHRIKE.  Lower growth and edge of frequently-flooded varzea forest, especially along streams and backwaters.  Known only from ne Ecuador. 
Thamnophilus nigrocinereus   BLACKISH-GREY ANTSHRIKE.  River island forest, mangroves, humid forest.  Lowlands to 500 m, e of Andes, of se Colombia, s Venezuela, French Guiana and n, Amazonian Brazil, incl. Mexiana and Marajó is.

Thamnophilus cryptoleucus   CASTELNAU'S ANTSHRIKE.  River island forest.  Lowlands to
300 m, e of Andes, in extreme se Colombia, ne Ecuador, ne Peru and w Amazonian Brazil. 
Sometimes placed in Myrmeciza, or treated as a subspecies of T. nigrocinereus.
Thamnophilus aethiops   WHITE-SHOULDERED ANTSHRIKE.  Humid forest, second growth.  Lowlands to 500 m, e of Andes, from se Colombia and s Venezuela s through e Ecuador and e Peru to n Bolivia and Amazonian,e Brazil.  Plumage and vocal variation suggest that more than one species may be included under this name, but the vocalizations of all subspecies are not known.
Thamnophilus unicolor   UNIFORM ANTSHRIKE.  Forest edge.  Andes, 900-2700 m of Colombia, w,e Ecuador and ne Peru.

Thamnophilus schistaceus   PLAIN-WINGED ANTSHRIKE.  Forest.  Lowlands to 500 m, e of Andes, of se Colombia s through e Ecuador, e Peru, n,e Bolivia and w Amazonian Brazil s to nw Argentina.  Records from Argentina are questionable.
Thamnophilus murinus   MOUSE-COLORED ANTSHRIKE.  Humid forest, savanna.  Lowlands to 1300 m, e of Andes, from se Colombia, s Venezuela and Guianas s through e Ecuador to ne Peru and n, Amazonian Brazil.
Thamnophilus aroyae   UPLAND ANTSHRIKE.  Forest edge, second growth, bamboo.  Andean slopes, 1200-1500 m, of se Peru and c Bolivia.
Thamnophilus punctatus   SLATY ANTSHRIKE.  Humid forest undergrowth, savanna, second-growth woodland, scrub.

 T. p. atrinucha  Lowlands to 1500 m from Belize and e Guatemala s on Caribbean slope to Costa Rica, Panama, wc Colombia, incl. I. Gorgona, and w Ecuador.  Probably a distinct species, differing in behavior and vocalizations from T. p. punctatus.
 T. p. punctatus  E of Andes, in e Colombia, w,s,ne Venezuela, Guianas, n Peru, n,e Bolivia and Amazonian,se Brazil.

Thamnophilus insignis   STREAK-BACKED ANTSHRIKE.  Humid forest.  Pantepui, 900-2000 m, of s Venezuela.
Thamnophilus amazonicus   AMAZONIAN ANTSHRIKE.  Stream edge thickets in forest, second growth.  Lowlands to 500 m, e of Andes in extreme e Colombia, s Venezuela and nw Amazonian Brazil; lowlands to 1300 m from se Colombia, se Venezuela and Guianas s through e Peru to n Bolivia and Amazonian,c Brazil.  The subspecies cinereiceps is sometimes treated as a separate species, but its relationships with adjacent races are poorly understood.  The name T. ruficollis has been suppressed (I.C.Z.N. 1981 Opinion 1180  Bull. Zool. Nomen. 38:120-121); it is uncertain whether it refers to cinereiceps or to amazonicus.

Thamnophilus caerulescens   VARIABLE ANTSHRIKE.  Forest undergrowth, riparian brush, savanna.

 The status of some populations is uncertain and two or more species may be involved. 
T. c. melanochrous, aspersiventer and connectens have been treated as separate species, or the first
two have been combined.
 T. c. melanochrous  Andes to 3050 m of e Peru from La Libertad and Amazonas s to Puno.
 T. c. aspersiventer  Andes of wc Bolivia in La Paz and Cochabamba.
 T. c. connectens  Lowlands of e Bolivia in Santa Cruz.
 T. c. caerulescens  Lowlands of c,se Bolivia, nw Argentina, w,n Paraguay and e,s Brazil.
 T. c. pernambucensis  E Brazil n to Ceará and Pernambuco.  Vocally distinct.
 T. c. gilvigaster  Lowlands of se Brazil, Uruguay and ne Argentina.  Sometimes treated as a separate species and has been reported to occur with T. caerulescens in n Argentina.

Thamnophilus torquatus   RUFOUS-WINGED ANTSHRIKE.  Brush, low trees.  Lowlands of e Bolivia and e,c Brazil.
Thamnophilus ruficapillus   RUFOUS-CAPPED ANTSHRIKE.  Forest undergrowth, riparian thickets.

 T. r. marcapatae  Andes to 2450 m of Cuzco and Puno, Peru.  Has been treated as a species, but is vocally similar to ruficapillus and the race subfasciatus (c,n Bolivia) is intermediate in morphology.
 T. r. ruficapillus  Lowlands of n Paraguay, se Brazil, Uruguay and ne Argentina.  T. r. marcapatae appears to be connected to ruficapillus by an intermediate population.

Pygiptila stellaris   SPOT-WINGED ANTSHRIKE.  Humid forest.  Lowlands to 750 m, e of Andes, from se Colombia, s Venezuela and Guianas s through e Ecuadorand e Peru to n Bolivia and Amazonian Brazil.
Megastictus margaritatus   PEARLY ANTSHRIKE.  Humid forest.  Lowlands to 500 m, e of Andes, in se Colombia, s Venezuela, ne Peru and w Amazonian Brazil.
Neoctantes niger   BLACK BUSHBIRD.  Humid forest undergrowth.  Lowlands to 500 m, e of Andes, of se Colombia, e Ecuador, ne Peru and w Amazonian Brazil.
Clytoctantes alixii   RECURVE-BILLED BUSHBIRD.  Humid forest undergrowth.  Lowlands to 1000 m of nw,nc Colombia and nw Venezuela.
Clytoctantes atrogularis   RONDONIA BUSHBIRD or BLACK-THROATED BUSHBIRD.  Humid forest undegrowth.  Known only from the type specimen from se Brazil.  Apparently a distinct species related to C. alixii.

Xenornis setifrons   SPECKLED ANTSHRIKE.  Humid forest undergrowth.  Lowlands to 600 m of e Panama and nw Colombia.
Thamnistes anabatinus   RUSSET ANTSHRIKE.  Humid forest, second-growth, thickets.  Lowlands to 1300 m from Mexico in Tabasco and Oaxaca s on Caribbean slope to Nicaragua, both slopes of Costa Rica and Panama and w Colombia and w Ecuador; lowlands to 1500 m, e of Andes, in se Colombia, sw Venezuela, e Ecuador, e Peru and c Bolivia.  The isolated southern race, rufescens, may be a separate species.
Dysithamnus stictothorax   SPOT-BREASTED ANTVIREO.  Forest.  Se Brazil.
Dysithamnus mentalis   PLAIN ANTVIREO.  Forest undergrowth, second growth.  Lowlands and mts. to 2450 m from Mexico in e Tabasco, Campeche and Belize to Panama and from Colombia, Venezuela, Trinidad and Tobago s, w of Andes, to nw Peru and, e of Andes, through e Ecuador, c,e Peru, c Bolivia; lowlands of e Paraguay, c,e Brazil and ne Argentina.

Dysithamnus striaticeps   STREAK-CROWNED ANTVIREO.  Humid forest, second growth.  Lowlands to 800 m on Caribbean slope of se Honduras, e Nicaragua and Costa Rica.  A record from Panama is erroneous.
Dysithamnus puncticeps   SPOT-CROWNED ANTVIREO.  Humid forest undergrowth.  Lowlands to 1000 m of se Costa Rica, Panama, w Colombia and w Ecuador.
Dysithamnus xanthopterus   RUFOUS-BACKED ANTVIREO.  Forest.  Coastal se Brazil.
Dysithamnus leucostictus   WHITE-STREAKED ANTVIREO.  Humid forest.  Mts., 900-1900 m, of e Colombia, w,n Venezuela and e Ecuador.  Usually considered conspecific with D. plumbeus, but distinct morphologically and ecologically, and they have widely allopatric ranges.  The race tucuyensis is reported to differ vocally and may be a separate species.

Dysithamnus plumbeus   PLUMBEOUS ANTVIREO.  Forest.  Lowlands of n Bolivia; se Brazil.

 The species leucostictus, plumbeus and occidentalis are sometimes placed in Thamnomanes.  They are typical Dysithamnus antvireos in behavior.

Dysithamnus occidentalis   BICOLORED ANTVIREO.  Forest.  Andes, 500-1200 m, of sw Colombia and e Ecuador.  Sometimes placed in Thamnomanes, but it is vocally and behaviorally a Dysithamnus.
Thamnomanes ardesiacus   SATURNINE ANTSHRIKE.  Humid forest undergrowth, edge, bushy areas.  Lowlands to 1100 m, e of Andes, from se Colombia, s Venezuela and Guianas s through e Ecuador and ne,c Peru to n Bolivia and Amazonian Brazil; lowlands of ne Peru extreme ne Bolivia and w Amazonian Brazil.
Thamnomanes caesius   CINEREOUS ANTSHRIKE.  Humid forest undergrowth.  Lowlands to 1000 m, e of Andes, of e Colombia, s Venezuela and Guianas s through e Ecuador to ne Peru and Amazonian,n,e Brazil and ne Bolivia.  The races glaucus + persimilis have been treated as a separate species.

Thamnomanes schistogynus   BLUISH-SLATE ANTSHRIKE.  Forest undergrowth, bamboo thickets, second growth, esp. along streams.  Lowlands of e Peru, n Bolivia and sw Amazonian Brazil.  Has been considered a subspecies of T. caesius, from which it differs little in behavior, but apparently they are sympatric in one area and not known to intergrade anywhere.
 Myrmotherula:  Antwrens  A large, complex genus of small, short-tailed antbirds; most occur in the humid forest in the lowlands of nc South America, many in the Amazonian drainage.  The greatest diversity of species is at approximately 400 m elevation near the base of the Andes in w Amazonia between ca. 2°N and 13°S latitude, where up to eight species have been observed in a flock.  Few species occur above 600 m and virtually none above 1300 m.  Whitney (1994. Auk 111:469-474) discussed behavior, vocalizations, and possible relationships among M. spodionota, behni, sunensis and M. schisticolor interior.

Myrmotherula brachyura   PYGMY ANTWREN.  Humid forest edge, second growth.

 M. b. ignota  Lowlands of c,e Panama and w Colombia.  Sometimes treated as a separate species, or as a race of M. obscura, in that case the name M. obscura becomes M. ignota.
 M. b. brachyura  Lowlands to 1000 m, e of Andes, from e Colombia, s Venezuela and Guianas s through e Ecuador and e Peru to n,e Bolivia and Amazonian Brazil.

Myrmotherula obscura   SHORT-BILLED ANTWREN.  Humid forest.  Lowlands to 750 m, e of Andes, of e Colombia, e Ecuador, ne,ce Peru and w Amazonian Brazil.  See M. b. ignota.
Myrmotherula sclateri   SCLATER'S ANTWREN.  Humid forest canopy.  Lowlands, e of Andes, of se Peru, n,e Bolivia and sw Amazonian Brazil.  Includes M. kermiti, based on variants of M. sclateri (Parker and Remsen, 1987. Bull. Brit. Orn. Club 107:100).
Myrmotherula klagesi   KLAGES'S ANTWREN.  Forest undergrowth.  Known only from a few localities in w Brazil, lower Amazon in w Pará from Óbidos to Santarém.

Myrmotherula ambigua   YELLOW-THROATED ANTWREN.  Humid forest undergrowth.  Lowlands to 300 m, e of Andes, of se Colombia, sw Venezuela and nw Amazonian Brazil.
Myrmotherula surinamensis   STREAKED ANTWREN.  Riparian growth, swampy areas.  Lowlands to 1100 m from Panama, w,nc,se Colombia, s Venezuela and Guianas s, w of Andes, to w Ecuador and, e of Andes, through e Ecuador and e Peru to n Bolivia and Amazonian Brazil.  The subspecies pacifica is vocally distinct and probably is a separate species.
Myrmotherula cherriei   CHERRIE'S ANTWREN.  Humid forest.  Lowlands to 600 m, e of Andes, of e Colombia, sw Venezuela and nw Brazil.
Myrmotherula longicauda   STRIPE-CHESTED ANTWREN.  Humid forest undegrowth.  E slope of Andes, 400-1500 m from se Colombia s through e Ecuador and e Peru to wc Bolivia.

Myrmotherula hauxwelli   PLAIN-THROATED ANTWREN.  Humid forest.  Lowlands to 500 m, e of Andes, from se Colombia s through e Ecuador and e Peru to n Bolivia and Amazonian Brazil.
Myrmotherula guttata   RUFOUS-BELLIED ANTWREN.  Humid forest undergrowth, savanna.  Lowlands to 750 m, e of Andes in s Venezuela, Guianas and n Amazonian Brazil.
Myrmotherula gularis   STAR-THROATED ANTWREN.  Humid forest.  Se Brazil.
Myrmotherula gutturalis   BROWN-BELLIED ANTWREN.  Forest undergrowth.  Lowlands to 1000 m, e of Andes, of se Venezuela, Guianas and n Brazil.
Myrmotherula fulviventris   CHECKER-THROATED ANTWREN.  Humid forest undergrowth, dense second growth.  Lowlands to 2000 m on Caribbean slope of se Honduras, Nicaragua and Costa Rica, both slopes of Panama, w,nc Colombia and w Ecuador.

Myrmotherula leucophthalma   WHITE-EYED ANTWREN.  Humid forest, bamboo thickets, tall second growth near streams.  Lowlands, e of Andes, of se Peru, n Bolivia and Brazil.  The races sordida and phaeonota have been reported from the w bank of the Rio Tapajós, but sympatry has not been confirmed and some specimens of phaeonota appear to be intermediate.
Myrmotherula haematonota   STIPPLE-THROATED ANTWREN.  Humid forest undergrowth.  Lowlands to 1300 m, e of Andes, from se Colombia and s Venezuela s through e Ecuador to ne Peru, n Bolivia and w Amazonian Brazil.
Myrmotherula spodionota   FOOTHILL ANTWREN.  Humid forest undergrowth.  Foothills, 500-1100 m, of Andes on e slope of e Ecuador and ne Peru.  Sometimes treated as a subspecies of M. leucophthalma or of M. haematonota.  Refs. Hilty and Brown 1986. Birds of Colombia, p. 392 and Parker and Remsen 1987. Bull. Brit. Orn. Club 107:100.

Myrmotherula ornata   ORNATE ANTWREN.  Forest, bamboo thickets.  Lowlands to 1200 m, e of Andes, from se Colombia s through e Ecuador to ne Peru and Brazil; e,se Peru and n Bolivia.  More than one species may be involved in the subspecies of M. ornata.  1. ornata + saturata.  2. atrogularis + meridionalis.  3. hoffmannsi.  Ref. Ridgely and Tudor, Birds of S. America, 2:278.
Myrmotherula erythrura   RUFOUS-TAILED ANTWREN.  Humid forest.  Lowlands, e of Andes, from se Colombia s through e Ecuador to e Peru and w Amazonian Brazil.
Myrmotherula axillaris   WHITE-FLANKED ANTWREN.  Humid forest, edge, second growth.  Lowlands to 1000 m on Caribbean slope of se Honduras, Nicaragua and Costa Rica, both slopes of Panama and from w,n,e Colombia, w,s Venezuela, Trinidad and Guianas s, w of andes, to w Ecuador and, e of Andes, through e Ecuador and c,e Peru to n,e Bolivia and Amazonian,e Brazil.  M. a. luctuosa is vocally distinct from Middle American and w S. American populations, but vocalizations of Amazonian populations have not been described.

?Myrmotherula fluminensis   RIO DE JANEIRO ANTWREN.  Woodland.  Foothills of se Brazil. 
Known from the unique type, which may be a hybrid M. axillaris x M. unicolor.
Myrmotherula schisticolor   SLATY ANTWREN.  Humid forest undergrowth, second growth.  Foothills and mts., 900-2300 m, and locally in lowlands, from Mexico, in n Chiapas, and Guatemala s to w Panama; from Colombia and w,n Venezuela s, w of Andes, to w Ecuador and, e of Andes, through e Ecuador to nc,e Peru.
Myrmotherula sunensis   RIO SUNO ANTWREN.  Humid forest.  Lowlands to 500 m, e of Andes, of se Colombia, e Ecuador, ne,c Peru and wc Brazil.
Myrmotherula longipennis   LONG-WINGED ANTWREN.  Humid forest.  Lowlands to 1300 m, e of Andes, from e Colombia, s Venezuela and Guianas s through e Ecuador to extreme ne Peru and Amazonian Brazil; ne Peru, n Bolivia and sw Amazonian Brazil.

Myrmotherula minor   SALVADORI'S ANTWREN.  Humid forest.  Locally in lowlands of ne Peru and w Amazonian,se Brazil.  Amazonian records are uncertain -- may be wrong.
Myrmotherula iheringi   IHERING'S ANTWREN.  Humid forest, bamboo.  Lowlands of se Peru and w Brazil.
Myrmotherula grisea   ASHY ANTWREN.  Forest.  Known only from Andean foothills, 450-1100 m, of c Bolivia.
Myrmotherula unicolor   UNICOLORED ANTWREN.  Forest.  Lowlands of se Brazil from Espírito Santo s to ne Rio Grande do Sul.  If the population in Alagoas, M. u. snowi, is included in unicolor, the range includes Alagoas; if M. snowi is considered a separate species it is restricted to Alagoas near Murici on the Pedra Branca, 400-550 m.  Ref. Ridgely and Tudor 1994. Birds of S. America, 2:287.

Myrmotherula behni   PLAIN-WINGED ANTWREN.  Humid forest.  Mts., 1000-1800m, of se Colombia; Pantepui of s Venezuela, Guyana and nw Brazil.
Myrmotherula urosticta   BAND-TAILED ANTWREN.  Forest.  Lowlands of se Brazil.
Myrmotherula menetriesii   GREY ANTWREN.  Humid forest.  Lowlands to 1000 m, e of Andes, from se Colombia, s Venezuela and Guianas s through e Ecuador and e Peru to n,e Bolivia and Amazonian Brazil.
Myrmotherula assimilis   LEADEN ANTWREN.  River island forest and scrub.  Lowlands of extreme se Colombia, ne Peru, n Bolivia and Amazonian Brazil.
Dichrozona cincta   BANDED ANTBIRD.  Humid forest.  Lowlands to 600 m, e of andes, from se Colombia and sw Venezuela s through e Ecuador and e Peru to n Bolivia and Amazonian Brazil.

Myrmorchilus strigilatus   STRIPE-BACKED ANTBIRD.  Undergrowth in dry forest.  Lowlands of e,se Bolivia, w Paraguay, n Argentina and sw,e Brazil.
Herpsilochmus parkeri   ASH-THROATED ANTWREN.  Humid forest.  Andes, 1350 m, of nc Peru.
Herpsilochmus motacilloides   CREAMY-BELLIED ANTWREN.  Humid forest.  Andes, 750-2100 m, of c Peru.
Herpsilochmus atricapillus   BLACK-CAPPED ANTWREN.  Dry forest, woodland, undergrowth, scrub.  Lowlands to 1000 m of e,se Bolivia, nw Argentina, Paraguay and c Brazil.
Herpsilochmus pileatus   BAHIA ANTWREN or PILEATED ANTWREN.  Caatinga.  Lowlands to 1200 m of e Brazil.

Herpsilochmus sticturus   SPOT-TAILED ANTWREN.  Humid forest undergrowth, savanna, riparian forest. S Venezuela, Guianas, se Ecuador and cn Amazonian Brazil.  Has included dugandi.
Herpsilochmus dugandi  DUGAND'S ANTWREN.  Lowlands to 500 m, e of Andes, of se Colombia and ne Ecuador.  Often considered to be a race of H. sticturus, but Ridgely and Tudor 1994. Birds of S. America, 2:258, treat dugandi as a full species because it is widely allopatric to sticturus and female plumages differ.  They are vocally similar.
Herpsilochmus stictocephalus   TODD'S ANTWREN.  Forest.  Lowlands to 300 m of e Venezuela and Guianas.

Herpsilochmus dorsimaculatus   SPOT-BACKED ANTWREN.  Humid forest.  Lowlands to 400 m, e of Andes, in se Colombia, s Venezuela and nw Brazil.
Herpsilochmus roraimae   RORAIMAN ANTWREN.  Humid forest.  Pantepui, 900-2100 m, of s Venezuela, Guyana and adj. nw Brazil.
Herpsilochmus pectoralis   PECTORAL ANTWREN.  Arid thorn scrub, caatinga.  Coastal e Brazil.
Herpsilochmus longirostris   LARGE-BILLED ANTWREN.  Open forest, scrub.  Lowlands of n Bolivia and ec Brazil.
Herpsilochmus axillaris   YELLOW-BREASTED ANTWREN.  Humid forest.  Locally in Andes, 900-1800 m, of sw Colombia, e Ecuador and e Peru.

Herpsilochmus rufimarginatus   RUFOUS-WINGED ANTWREN.  Humid forest, edge.  Lowlands to 2400 m from e Panama, nw,nc,e Colombia and Venezuela s, e of Andes, through e Ecuador and e Peru to n,e Bolivia; lowlands of e Paraguay, e,s Brazil, incl. I. Marajó, and ne Argentina.
Microrhopias quixensis   DOT-WINGED ANTWREN.  Humid forest, undergrowth, thickets, bamboo, second growth.  The three following groups may be separate species.

 M. q. boucardi  Lowlands to 900 m from Mexico in s Veracruz, n Oaxaca, Tabasco, Chiapas, s Campeche and s Quintana Roo s along Caribbbean slope to Nicaragua, both slopes of Costa Rica and Panama and in w Colombia and w Ecuador.
 M. q. quixensis  Lowlands to 1000 m, e of Andes, from se Colombia, Surinam and French Guiana s through e Ecuador and e Peru to n Bolivia and Amazonian,n Brazil.
 M. q. emiliae  Lowlands of c Brazil.

Formicivora iheringi   NARROW-BILLED ANTWREN.  Woodland, scrub, caatinga.  E. Brazil.
Formicivora grisea   WHITE-FRINGED ANTWREN.  Arid thorn scrub, cactus, savanna, dense woodland, forest undergrowth, thickets, mangroves.  Lowlands to 1500 m of Panama on Pearl Is., nw,n,c,e Colombia, Venezuela, incl. Margarita I., Guianas, Chacachacare I., off Trinidad, Tobago, n,e Bolivia and Amazonian Brazil.  More than one species may be involved as vocalizations vary geographically, but not all populations have been studied.
Formicivora melanogaster   BLACK-BELLIED ANTWREN.  Riparian thickets, brush, dense woodland.  Plateau of e,se Bolivia and sw,c Brazil.
Formicivora serrana   SERRA ANTWREN.  Serra woodland, scrub, coastal restinga.  Lowlands to 1000 m of se Brazil.  Often considered conspecific with melanogaster but differs in morphology and ecology.  The subspecies littoralis was treated as a species by Ridgley and Tudor 1994. Birds of S. America 2:302, primarily because of habitat differences.

Formicivora erythronotos   BLACK-HOODED ANTWREN.  Forest undergrowth.  Se Brazil.  The inclusion of this species in Formicivora follows Pacheco 1988. Bull. Brit. Orn. Club 104:179-182.
Formicivora rufa   RUSTY-BACKED ANTWREN.  Savanna, woody scrub, mostly in dry open areas.  Locally in lowlands, e of Andes, in Surinam, Amazonian,c Brazil, e Peru, n,e Bolivia and Paraguay.
Drymophila ferruginea   FERRUGINOUS ANTBIRD.  Forest undergrowth, bamboo.  Lowlands to 1250 m of se Brazil.
Drymophila rubricollis   BERTONI'S ANTBIRD.  Forest undergrowth.  Coastal mts. of se Brazil, ne Paraguay and ne Argentina.  Willis (1988. Rev. Brasil. Biol. 4:431-438) showed that rubricollis is distinct from D. ferruginea, with which it had been confused.

Drymophila genei   RUFOUS-TAILED ANTBIRD.  Forest undergrowth.  Se Brazil.
Drymophila ochropyga   OCHRE-RUMPED ANTBIRD.  Forest undergrowth.  Se Brazil.
Drymophila devillei   STRIATED ANTBIRD.  Bamboo thickets.  Locally in lowlands, e of Andes, of cs Colombia, se Ecuador, e Peru, n Bolivia and s Amazonian Brazil.
Drymophila caudata   LONG-TAILED ANTBIRD.  Bamboo thickets.  Mts., 1200-2700 m, of Colombia, n Venezuela, w,e Ecuador, e Peru and cw Bolivia.
Drymophila malura   DUSKY-TAILED ANTBIRD.  Forest undergrowth.  Se Brazil, e Paraguay and ne Argentina.

Drymophila squamata   SCALED ANTBIRD.  Humid forest.  Se Brazil.
Terenura maculata   STREAK-CAPPED ANTWREN.  Forest.  Lowlands of se Brazil, e Paraguay and ne Argentina.
Terenura sicki   ALAGOAS ANTWREN or ORANGE-BELLIED ANTWREN.  Forest.  Known only from ne Brazil in ne Pernambuco.  A distinctive, recently described species (Teixera and Gonzaga. 1983. Bull. Brit. Orn. Club 103:133-135).
Terenura callinota   RUFOUS-RUMPED ANTWREN.  Humid forest.

  T. c. callinota  Mts., 750-2500 m, of Costa Rica, w,e Panama, Colombia, sw Guyana, w,e Ecuador and nc,e Peru. Includes Hylophilus puellus, which is based on a female T. callinota.
  T. c. venezuelana  Nw Venezuela. Probably a separate species.

Terenura humeralis   CHESTNUT-SHOULDERED ANTWREN.  Humid forest.  Lowlands, e of Andes, in e Ecuador, e Peru, n Bolivia and w Amazonian Brazil.
Terenura sharpei   YELLOW-RUMPED ANTWREN.  Humid forest.  Andes, 1200-2450 m, of se Peru and wc Bolivia.
Terenura spodioptila   ASH-WINGED ANTWREN.  Humid forest.  Lowlands to 1100 m, e of Andes, of se Colombia, s Venezuela, Guianas and Brazil.
Cercomacra cinerascens   GREY ANTBIRD.  Humid forest.  Lowlands to 1000 m, e of Andes, from e Colombia, s Venezuela and Guianas s through e Ecuador to ne Peru and Brazil; e Peru, n Bolivia and Brazil.
Cercomacra brasiliana   RIO DE JANEIRO ANTBIRD.  Forest.  Se Brazil.

Cercomacra tyrannina   DUSKY ANTBIRD.  Humid forest undergrowth, edge, thickets, second growth.  Lowlands to 2100 m from Mexico in Veracruz, n Oaxaca, Tabasco, Chiapas, Campeche and s Quintana Roo s on Caribbean slope to Honduras, both slopes of Nicaragua, Costa Rica and Panama, Colombia, w,s Venezuela and Guianas s, w of Andes, to w Ecuador and, e of Andes, to n Amazonian, ne Brazil.

 More than one species apparently involved.  In the Manaus area the form laeta differs vocally from tyrannina elsewhere in its range.  Laeta ranges from the Manaus area e to around Belém in e Pará and n Maranhão; around Belém it occurs in the same habitat as C. tyrannina saturatior.  The voice of the disjunct race sabinoi is unknown, and could be a separate species or allied to laeta.  Ref. Ridgely and Tudor 1994. Birds of S. America, 2:306.

Cercomacra nigrescens   BLACKISH ANTBIRD.  Undergrowth of swampy forest.  Lowlands to 500 m, e of Andes, from se Colombia, Surinam and French Guiana s through e Ecuador and c,e Peru to n Bolivia and Brazil.
Cercomacra ferdinandi   BANANAL ANTBIRD.  Forest undergrowth.  Known only from c Brazil.  Sometimes considered conspecific with C. nigrescens but may be related to C. melanaria.
Cercomacra serva   BLACK ANTBIRD.  Forest undergrowth, bamboo thickets, second growth.  Lowlands to 500 m, e of Andes, of se Colombia, e Ecuador, e Peru, n Bolivia and sw Amazonian Brazil.
Cercomacra nigricans   JET ANTBIRD.  Humid forest edge, dense undergrowth, thickets, second growth.  Lowlands to 1500 m of Panama, incl. Pearl Is., w,n,se Colombia, w Ecuador, Venezuela and nw Brazil.

Cercomacra carbonaria   RIO BRANCO ANTBIRD.  Humid forest.  Known only from nw Brazil on the upper Rio Branco in Roraima.
Cercomacra manu   MANU ANTBIRD.  Bamboo thickets, dense riparian vegetation.  Lowlands to 1200 m of se Peru and extreme nw Bolivia.  Probably most closely related to C. melanaria.
Cercomacra melanaria   MATO GROSSO ANTBIRD.  Dry forest.  Lowlands, e of Andes, of n,e Bolivia, w Brazil and n Paraguay.
Pyriglena leuconota   WHITE-BACKED FIRE-EYE.  Forest undergrowth.  Andes, 400-2700 m, of c,se Colombia, w,e Ecuador, c,e Peru, n Bolivia, n Paraguay and s Amazonian Brazil.  May be conspecific with P. leucoptera.  The race pacificus may be a separate species.

Pyriglena leucoptera   WHITE-SHOULDERED FIRE-EYE.  Forest undergrowth, second growth shrub.  E,s Brazil, e Paraguay and ne Argentina.
Pyriglena atra   FRINGE-BACKED FIRE-EYE.  Forest.  Lowlands of e Brazil in coastal ne Bahia.  May be conspecific with P. leucoptera.
Rhopornis ardesiaca   SLENDER ANTBIRD.  Forest.  Known only from highlands, 780-910 m, of e Brazil.
Myrmoborus leucophrys   WHITE-BROWED ANTBIRD.  Undergrowth in swampy forest.  Lowlands to 1400 m, e of Andes, from se Colombia, nw,s,ce Venezuela and Guianas s through e Ecuador and e Peru to n,e Bolivia and n, Amazonian Brazil.

Myrmoborus lugubris   ASH-BREASTED ANTBIRD.  River island forest undegrowth.  Lowlands to 500 m, e of Andes, of extreme se Colombia, ne Peru and Amazonian Brazil.
Myrmoborus myotherinus   BLACK-FACED ANTBIRD.  Humid forest undergrowth.  Lowlands to 750 m, e of Andes, from se Colombia and s Venezuela s through e Ecuador and e Peru to n,e Bolivia and Amazonian Brazil.
Myrmoborus melanurus   BLACK-TAILED ANTBIRD.  Forest.  Known only from ne Peru.
Hypocnemis cantator   WARBLING ANTBIRD.  Undergrowth in wet forest, savanna.
 H. c. cantator  Lowlands to 500 m, e of Andes, from se Colombia, Guianas, e Ecuador, ne Peru and Amazonian, ne Brazil, incl. I. Marajó.

 H. c. flavescens  Lowlands to 1200 m of e Colombia, s Venezuela and nw Amazonian Brazil.
 H. c. subflava  Andean foothills of c,se Peru and n Bolivia.
 H. c. flavescens appears to be a subspecies of cantator, but subflava is a distinct form of the foothills, perhaps a separate species, although mixed pairs have been reported.

Hypocnemis hypoxantha   YELLOW-BROWED ANTBIRD.  Forest.  Lowlands to 500 m, e of Andes, of se Colombia, e Ecuador, e Peru and Amazonian Brazil.
Hypocnemoides melanopogon   BLACK-CHINNED ANTBIRD.  Humid forest undergrowth, usually near streams, swampy areas.  Lowlands to 500 m, e of Andes, in e Colombia, s Venezuela, Guianas, ne Peru and Amazonian Brazil, incl. is. at mouth of Amazon.
Hypocnemoides maculicauda   BAND-TAILED ANTBIRD.  Riparian thickets, swampy forest, lake edges.  Lowlands, e of Andes, in ne,se Peru, n,e Bolivia and Amazonian Brazil.  Closely related to and possibly an allospecies of H. melanopogon, but there seems to be a range overlap in Amazonia.

Myrmochanes hemileucus   BLACK-AND-WHITE ANTBIRD.  River island scrub.  Lowlands to 500 m, e of Andes, of extreme se Colombia, e Ecuador, ne Peru, n Bolivia and sw Amazonian Brazil.
Gymnocichla nudiceps   BARE-CROWNED ANTBIRD.  Humid forest undergrowth, edge, dense second growth, thickets.  Lowlands to 1200 m on Caribbean slope of e Guatemala, incl. Petén, Belize, Honduras, Nicaragua, both slopes of Costa Rica and Panama and nw,n Colombia.
Sclateria naevia   SILVERED ANTBIRD.  Swampy forest near streams, mangroves, open woodland.  Lowlands to 500 m, e of Andes of e Colombia, s,e Venezuela, Trinidad, Guianas, e Peru, n Bolivia and Amazonian Brazil.  The subspecies argentata is sometimes treated as a separate species.
Percnostola rufifrons   BLACK-HEADED ANTBIRD.  Humid forest undergrowth, savanna.  Lowlands to 500 m, e of Andes, of se Colombia, s Venezuela, Guianas, ne Peru and n Amazonian Brazil.

Percnostola schistacea   SLATE-COLORED ANTBIRD.  Humid forest undergrowth.  Lowlands to 500 m, e of Andes, of se Colombia, e Peru and w Amazonian Brazil.
Percnostola leucostigma   SPOT-WINGED ANTBIRD.  Humid forest undergrowth, bushy savanna, esp. near water.  Lowlands to 1500 m, locally to 2500 m, e of Andes, from e Colombia, nw,s Venezuela and Guianas s through e Ecuador and e Peru to n Bolivia and Amazonian Brazil.  Sometimes treated as a subspecies of P. schistacea; sometimes place in the genus Sclateria and in Schistocichla in Ridgely and Tudor 1994. Birds of S. America, 2:329.  Variation in leg color and vocalizations suggest that more than one species is involved, but many taxa are poorly known.

Percnostola caurensis   CAURA ANTBIRD.  Humid forest.  Lowlands to 1300 m of s Venezuela and adj. nw Brazil.
Percnostola lophotes   WHITE-LINED ANTBIRD.  Bamboo thickets, cane, humid forest edge.  Lowlands of e Peru and n Bolivia.  Includes P. macrolopha, originally considered related to P. rufifrons but is based on an adult male P. lophotes.  P. lophotes may not be a Percnostola.
Myrmeciza berlepschi   STUB-TAILED ANTBIRD.  Forest.  Pacific lowlands to 400 m of w Colombia and nw Ecuador.  Formerly called Sipia berlepschi, but Sipia is not distinct from Myrmeciza. For position of Sipia rosenbergi, see M. nigricauda.  Ref. Robbins and Ridgely 1990. Bull. Brit. Orn. Club 111:11-18.

Myrmeciza longipes   WHITE-BELLIED ANTBIRD.  Humid forest undergrowth, edge, second-growth woodland.  Lowlands to 1700 m of c,e Panama, n,e Colombia, Venezuela, Trinidad, Guyana and n Amazonian Brazil.
Myrmeciza exsul   CHESTNUT-BACKED ANTBIRD.  Humid forest undergrowth, edge, dense second growth.

 M. e. exsul  Lowlands of Nicaragua on Caribbean slope, Costa Rica (exc. dry nw) and Panama e to Darién.
 M. e. maculifer  Lowlands to 1000 m of e Panama on the Pacific slope of se Darién, w Colombia and w Ecuador.  Intergrades with exsul in e Panama.

Myrmeciza ferruginea   FERRUGINOUS-BACKED ANTBIRD.  Humid forest undergrowth.  Lowlands to 500 m of Guianas and Amazonian Brazil.
Myrmeciza ruficauda   SCALLOPED ANTBIRD.  Forest undergrowth.  E Brazil.
Myrmeciza loricata   WHITE-BIBBED ANTBIRD.  Humid forest undergrowth.  Se Brazil.
Myrmeciza squamosa   SQUAMATE ANTBIRD.  Forest undergrowth.  Se Brazil.
Myrmeciza laemosticta   DULL-MANTLED ANTBIRD.  Humid forest undergrowth, dense second growth.  Lowlands to 1100 m on Caribbean slope of Costa Rica, both slopes of Panama, n Colombia and nw Venezuela.
Myrmeciza nigricauda   ESMERALDAS ANTBIRD.  Humid forest undergrowth, dense second growth.  Lowlands to 1000 m of w Colombia and nw Ecuador.  Sipia rosenbergi was based on a male specimen of M. nigricauda, and the latter is specifically distinct from M. laemosticta.

Myrmeciza disjuncta   YAPACANA ANTBIRD.  Humid forest undergrowth.  Known only from lowlands, ca. 100 m, of s Venezuela.
Myrmeciza pelzelni   GREY-BELLIED ANTBIRD.  Humid forest.  Lowlands to 400 m, e of Andes, of se Colombia, s Venezuela and nw Brazil.
Myrmeciza hemimelaena   CHESTNUT-TAILED ANTBIRD.  Humid forest undergrowth.  Lowlands to 500 m, e of Andes, from se Colombia s through e Ecuador and e Peru to n,e Bolivia and s Amazonian Brazil.
Myrmeciza hyperythra   PLUMBEOUS ANTBIRD.  Humid forest undergrowth.  Lowlands to 500 m, e of Andes, of se Colombia, e Ecuador, e Peru, n Bolivia and sw Amazonian Brazil.
Myrmeciza melanoceps   WHITE-SHOULDERED ANTBIRD.  Humid forest undergrowth.  Lowlands to 500 m, e of Andes, of e Colombia, e Ecuador, ne Peru and w Amazonian Brazil.

Myrmeciza goeldii   GOELDI'S ANTBIRD.  Humid forest undergrowth, bamboo thickets, swampy forest undergrowth.  Lowlands of se Peru, n Bolivia and sw Amazonian Brazil.  M. goeldii has been treated as an allospecies of M. melanoceps.
Myrmeciza fortis   SOOTY ANTBIRD.  Humid forest undergrowth.  Lowlands to 500 m, e of Andes, of se Colombia, e Peru, n Bolivia and w Amazonian Brazil.
Myrmeciza immaculata   IMMACULATE ANTBIRD.  Humid forest undergrowth, edge.  Mts., 300-2400 m, of Costa Rica, w,e Panama, w,e Colombia, nw Venezuela and w Ecuador.
Myrmeciza griseiceps   GREY-HEADED ANTBIRD.  Forest undergrowth.  Andes, 1350-2600 m, of sw Ecuador and nw Peru.  Generic affinities uncertain; has some similarities to Cercomacra.

Myrmeciza atrothorax   BLACK-THROATED ANTBIRD.  River edge scrub, second growth.  Lowlands to 1600 m, e of Andes, of e Colombia, s Venezuela, Guianas, e Peru, n,e Bolivia and Amazonian Brazil, incl. I. Marajó.  Includes M. stictothorax, known only from two specimens from Rio Tapajós, now regarded as an aberrant M. atrothorax.  Differs behaviorally from other species of Myrmeciza, perhaps generically separable.  Ref. Schulenberg and Stolz 1991. Auk 108:731-733.
Pithys albifrons   WHITE-PLUMED ANTBIRD.  Humid forest undergrowth, savanna.  Lowlands to 1500 m, e of Andes, from e Colombia, s Venezuela and Guianas s through e Ecuador to n,e Peru and w Amazonian Brazil.

Pithys castanea   WHITE-MASKED ANTBIRD.  Humid forest.  Known from one specimen from n Peru.  May not be a good species; possibly a hybrid of unknown parentage.
Gymnopithys rufigula   RUFOUS-THROATED ANTBIRD.  Humid forest undergrowth, savanna.  Lowlands to 900 m of s Venezuela, Guianas and n Amazonian Brazil.
Gymnopithys bicolor   BICOLORED ANTBIRD.  Humid forest undergrowth, savanna.  Lowlands to 1700 m on Caribbean slope of n,e Honduras and Nicaragua, both slopes of Costa Rica and Panama, w,nc Colombia and w Ecuador.  Closely related to leucaspis.  Hackett (1992. Wilson Bull. 105:301-315) found them to be similar, but genetically discrete.
Gymnopithys leucaspis   WHITE-CHEEKED ANTBIRD.  Humid forest undergrowth.  Lowlands to 500 m, e of Andes, of se Colombia, e Ecuador, ne Peru and nw Amazonian Brazil.

Gymnopithys lunulata   LUNULATED ANTBIRD.  Humid forest undergrowth.  Lowlands, e of Andes, of e Ecuador and e Peru.  Relationship to G. salvini unclear, but both have been taken at the same locality in ne Peru.
Gymnopithys salvini   WHITE-THROATED ANTBIRD.  Humid forest undergrowth.  Lowlands, e of Andes, in e Peru, n Bolivia and w Amazonian Brazil.
Myrmornis torquata   WING-BANDED ANTBIRD.  Humid forest undergrowth.  Lowlands to 900 m of se Nicaragua, c,e Panama and nw,n Colombia; lowlands to 1200 m, e of Andes, of se Colombia, e Ecuador, ne Peru and s Amazonian Brazil.  Appears to be closest to Gymnopithys.  The subspecies stictoptera is sometimes treated as a species, but is behaviorally similar to torquata.

Rhegmatorhina melanosticta   HAIRY-CRESTED ANTBIRD.  Humid forest undergrowth.  Lowlands to 600 m, e of Andes, of se Colombia, e Ecuador, e Peru, n Bolivia and sw Amazonian Brazil.  The race brunneiceps closely approaches the range of melanosticta without evidence of intergradation and may be a separate species.
Rhegmatorhina cristata   CHESTNUT-CRESTED ANTBIRD.  Humid forest undergrowth. Lowlands to 300 m, e of Andes, in e Colombia and nw Amazonian Brazil.
Rhegmatorhina hoffmannsi   WHITE-BREASTED ANTBIRD.  Humid forest undergrowth.  Lowlands of w Amazonian Brazil.
Rhegmatorhina berlepschi   HARLEQUIN ANTBIRD.  Humid forest undergrowth.  Known only from c Amazonian Brazil.

Rhegmatorhina gymnops   SANTAREM ANTBIRD.  Humid forest undergrowth.  Sc Amazonian Brazil.
Hylophylax naevioides   SPOTTED ANTBIRD.  Humid forest undergrowth, dense second growth.  Lowlands to 1000 m of e Honduras, e Nicaragua, Costa Rica, Panama, w,nc Colombia and w Ecuador.
Hylophylax naevia   SPOT-BACKED ANTBIRD.  Humid forest undergrowth, second growth.  Lowlands to 1100 m, e of Andes, from se Colombia, s Venezuela and Guianas s through e Ecuador and e Peru to n,e Bolivia and Amazonian Brazil.
Hylophylax punctulata   DOT-BACKED ANTBIRD.  Humid forest undergrowth, mostly near water.  Lowlands to 500 m, e of Andes, e of Andes, of s Venezuela, ne Peru, n Bolivia abd n, Amazonian Brazil.
Hylophylax poecilonota   SCALE-BACKED ANTBIRD.  Humid forest undergrowth.

 Although there is extensive plumage variation, the behavior of all populations is similar.  Reports of sympatry appear to be based on mislabeled specimens.
 H. p. poecilonota  Lowlands to 1400 m, e of Andes, from se Colombia, s Venezuela and Guianas s through e Ecuador and n,e Peru to n Brazil.
  H. p. griseiventris  Extreme se Peru, n Bolivia and Amazonian Brazil.

Phlegopsis nigromaculata   BLACK-SPOTTED BARE-EYE.  Humid forest undergrowth.  Lowlands to 500 m, e of Andes, from e Colombia s through e Ecuador and e Peru to n,e Bolivia and ne, Amazonian Brazil.  Phlegopsis barringeri, known only from the type specimen from se Colombia, is now regarded as a hybrid P. nigromaculata x P. erythroptera.  (Graves 1992. Proc. Biol. Soc. Wash. 105:834-840.).
Phlegopsis erythroptera   REDDISH-WINGED BARE-EYE.  Humid forest undergrowth.  Lowlands to 500 m, e of Andes, from se Colombia and sw Venezuela s through e Ecuador and e Peru to n Bolivia and w Amazonian Brazil.
Skutchia borbae   PALE-FACED BARE-EYE.  Humid forest undergrowth.  Lowlands of w Amazonian Brazil.

Phaenostictus mcleannani   OCELLATED ANTBIRD.  Humid forest undergrowth.  Caribbean lowlands to 1200 m of e Honduras, e Nicaragua, Costa Rica, both slopes of Panama, w Colombia and nw Ecuador.