Bicolored Antbird (1 Viewer)

[Richard Klim]

AOU-SACC Proposal #587 (Freeman, Sep 2013): Split Gymnopithys leucaspis into two species.

AOU-SACC:

Willis (1967) suggested that trans-Andean bicolor subspecies group deserved separate species, and this was followed by Wetmore (1972), Hilty & Brown (1986), and Sibley & Monroe (1990), returning to the species limits of Cory & Hellmayr (1924). See Hackett (1993) for continued treatment of bicolor as conspecific with G. leucaspis, as outlined by Zimmer (1937a). However, genetic data (Brumfield et al. 2007) indicate that leucaspis is actually the sister to G. rufigula, not to bicolor. SACC proposal pending biocolor as separate species. Gymnopithys leucaspis (including bicolor) and G. rufigula form a superspecies (Zimmer & Isler 2003).

Ridgely & Tudor 2009 (Birds of South America: Passerines):

Bicolored Antbird Gymnopithys leucaspis
By some considered two species: G. leucaspis (White-cheeked Antbird) east of Andes, G. bicolor (Bicolored Antbird) west of them.

Brumfield, Tello, Cheviron, Carling, Crochet & Rosenberg 2007. Phylogenetic conservatism and antiquity of a tropical specialization: Army-ant-following in the typical antbirds (Thamnophilidae). Mol Phylogenet Evol 45(1): 1–13.

Zimmer & Isler 2003 (HBW 8).

AOU 1998 (Check-list):

Some authors (e.g., Hilty and Brown 1986, Wetmore 1972, Sibley and Monroe 1990) recognize the two groups as distinct species, G. bicolor (Lawrence, 1863) [Bicolored Antbird] and G. leucaspis [White-cheeked Antbird]. This is based on Willis' (1967) opinion that if South American G. rufigula [Rufous-throated Antbird] is ranked at the species level, then bicolor and leucaspis must also be ranked as species. Willis (1967), however, found no differences in ecology or vocalizations between bicolor and leucaspis, and Hackett (1993) found only weak genetic differentiation between them, despite their disjunct distributions; see also Zimmer (1937) and Ridgely and Tudor (1994).

 

[Peter Kovalik]

IOC Updates Diary:
Sept 25 Post White-cheeked Antbird on Updates/PS list

 

[Peter Kovalik]

Gymnopithys leucaspis

IOC Update Diary:
Dec 15 Accept White-cheeked Antbird

 

[njlarsen]

And the SACC status seems to be 5:0 for acceptance

Niels

 

[Peter Kovalik]

AOU-SACC Proposal #587 (Freeman, Sep 2013): Split Gymnopithys leucaspis into two species.

AOU-SACC:

Split Gymnopithys leucaspis into two species PASSED (15 Feb 2014)