Moustached Antwren (Myrmotherula ignota)

Other Names (World)
Moustached Antwren, Griscom's Antwren, Colombian Antwren, Short-billed Antwren (obscura)

Family
Thamnophilidae (Typical Antbirds)

Size
7.50 - 8 cm

First Described (Guide)
Griscom, 1929

Habitat
Subtropical and tropical moist lowland forest. From sea-level - 1,100 m.

Range (Guide)

Brazil (B), Colombia (B), Ecuador (B), Panama (B), Peru (B).

Rarity Status
Currently this species is not classified as a rarity in this country OR information has not been updated.

Population
Estimated population is unknown (2010).

Status LC
For more information see BirdLife International Species Factsheet.

Voice
Xeno-Canto Sound Files (more (59)...)

Moustached Antwren (Myrmotherula ignota) [XC57934]
by Andrew Spencer from Playa de Oro, Esmeraldas, Ecuador (song)

Moustached Antwren (Myrmotherula ignota) [XC271440]
by Jonas Nilsson from Pipeline road, Panama (song)

Subspecies
Myrmotherula brachyura (Sibley and Monroe 1990, 1993) was split into Pygmy Antwren (Myrmotherula brachyura) and Moustached Antwren (Myrmotherula ignota) following Stotz et al. (1996). This treatment has been further revised by SACC (2005) who include Short-billed Antwren (Myrmotherula obscura) (Sibley and Monroe 1990, 1993), within Moustached Antwren (Myrmotherula ignota).

Genetic and morphological analyses indicate that this species and Pygmy Antwren (Myrmotherula brachyura), Guianan Streaked Antwren (Myrmotherula surinamensis), Amazonian Streaked Antwren (Myrmotherula multostriata), Pacific Antwren (Myrmotherula pacifica), Cherrie's Antwren (Myrmotherula cherriei), Klages's Antwren (Myrmotherula klagesi), Stripe-chested Antwren (Myrmotherula longicauda), Sclater's Antwren (Myrmotherula sclateri) and Yellow-throated Antwren (Myrmotherula ambigua) represent a monophyletic group (the "streaked antwren assemblage"). Closely related to Pygmy Antwren (Myrmotherula brachyura), and nominate subspecies formerly considered conspecific, but differs in vocalizations and plumage. Subspecies obscura often treated as a separate species, but vocally indistinguishable from nominate.

The following 2 subspecies are recognised:

ignota Griscom, 1929 - Eastern Panama (Caribbean slope in Canal area and San Blas, Pacific slope in eastern Panam� and Dari�n), western and northern Colombia (Pacific slope and along northern base of Andes east to Santander) and north-western Ecuador (Esmeraldas, south-western Imbabura, north-western Pichincha).
obscura Zimmer, JT, 1932 - South-central and eastern Colombia (locally along base of Andes southern from Meta, and in Guian��a and Vaup�s), eastern Ecuador, north-eastern Peru (south to Pasco and Ucayali), and south-western and west-central Amazonian Brazil (extreme south-west.

References
See References.

Files:

JPG files for Moustached Antwren (Myrmotherula ignota) - 10 files

More Information

BirdLife International

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BirdLife International Species Factsheet.

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