Taxonomic evaluation of the Grallaria rufula (Rufous Antpitta) complex (Aves: Passeriformes: Grallariidae) distinguishes sixteen species
Isler, Morton L.
Chesser, Terry
Robbins, Mark B.
Cuervo, Andrés M.
Cadena, Carlos Daniel
Hosner, Peter A.
Zootaxa
2020
2020-07-21
4817
1
1
74
Hosner, Robbins, Isler, & Chesser
Hosner, Robbins, Isler, & Chesser
2020
[151,862,1089,1116]
Aves
Grallariidae
Grallaria
Animalia
Passeriformes
20
21
Chordata
species
ayacuchensis
sp. nov.
Includes population designated blakei 3in the analysis.
Diagnosis.Upperparts dark reddish yellow-brown; anterior underparts paler grading to light buff on lower belly. Trilled long songs in combination with short songs consisting of a regularly repeated unmodulated note distinguish G. ayacuchensis( Fig. 14) from all other populations except G. centralis. Vocal differences between G. ayacuchensisand G. centralisinclude short song note shape (rounded in G. centralisand downslurred in G. ayacuchensis) and pattern of change in duration of long song notes (notes lengthen or remain constant in G. centralisand shorten in G. ayacuchensis). The pace of long songs of G. ayacuchensisis faster than that of G. centralis, and although ranges of values did not overlap, means did not differ significantly, presumably because of small sample sizes.
Distribution.Endemic to Peruon east Andean slope in Ayacuchowest of the Río Apurímacbetween the Río Mantaro and Río Pampas, 2500–3700 m.
Holotype. Centro de Ornitologíay Biodiversidad( CORBIDI) AV-KVG166. Adultmale shot by P. A. Hosnerin Chusqueathicket in secondary forest, and prepared as a study skin by Karen Verde-Guerra, on 22 September 2012at Chupón, Dpto. Ayacucho, Peru( 13° 16’ S, 73°30’ W, elevation 3300 m). Voicerecorded ( ML186926).
Description of holotype.Adult male. Overall plumage of upperparts dark reddish yellow-brown (7.5YR 4/4), with throat and breast grading toward yellowish red-brown (5YR 5/8). Crown, auriculars, nape, back, rump, wing, uppertail coverts, and rectrices dark reddish yellow-brown (7.5YR 4/4). Remiges dark reddish yellow-brown (7.5YR 4/4) with the inner vane of each feather slightly duskier. Orbital, lores, throat, breast, side of breast, and upper flanks yellowish red-brown (5YR 5/8), grading to light buff on lower belly. Some feathers on belly have faint pale neutral gray mottling. Lower flanks grading to dark reddish yellow-brown (7.5YR 4/4), undertail coverts pinkish white (7.5YR 8/4). Testes 8 x 4 mm; skull 50% pneumatized; no bursa of Fabricius; stomach: insects; moderate fat, wt: 48.4 g; heavy contour feather molt. Iris dark brown, legs dusky gray, bill black. Measurements of holotype.Bill length 12.7 mm, wing length 83.7 mm, tail length 41.3 mm, tarsus length 46.3 mm. Paratopotypes.KU 132736 (male), KU 132701 (male), CORBIDI Av-MBR 8329 (male), CORBIDI Av- PAH1242 (male). Paratypes. KU119996 (female), AMNH820776 (male) (specimen photographs App. 6, Fig. A28).
Etymology.The scientific and English names reflect its restricted known distribution on the humid eastern slopes of the Department of Ayacucho, Peru.
Remarks.May also occur in adjacent northeastern Huancavelica. See remarks for G. centralis. Holotypealso cataloged as University of KansasBiodiversity Institute (KU) 122629, tissue number 29375.
2012-09-22
CORBIDI, ML
Biodiversidad & Adult & P. A. Hosner & Karen Verde-Guerra
Peru
Voice
3300
-13.266666
Centro de Ornitologia
1291
-73.5
Chupon
21
22
1
Ayacucho
holotype
[199,671,693,720]
KU, AMNH
21
22
1
paratype