TL;DR: New data is provided on systematics and host associations of feather mites of the subfamily Proctophyllodinae recorded on passerine birds in Costa Rica and the female of Anisophyllodes pipromorphae Atyeo, 1967, previously known from two forms of males only, is described for the first time.
Abstract: The paper provides new data on systematics and host associations of feather mites of the subfamily Proctophyllodinae (Astigmata: Proctophyllodidae) recorded on passerine birds (Passeriformes) in Costa Rica. A total of 25 proctophyllodine species of six genera have been recorded, of which 19 new species are described: Anisophyllodes cuneiformis sp. n. from Sittasomus griseicapillus (Vieillot) (Furnariidae), Atrichophyllodes latilobus sp. n. from Hylophylax naevioides (Lafresnaye) (Thamnophilidae), Nycteridocaulus attila sp. n. from Attila spadiceus (Gmelin, JF) (Tyrannidae), N. hylophylax sp. n. from Hylophylax naevioides (Lafresnaye) (Thamnophilidae), N. ketourus sp. n. from Thryophilus rufalbus (Lafresnaye) (Troglodytidae), N. leptopogoni sp. n. from Leptopogon superciliaris Tschudi (Tyrannidae), N. myiobius sp. n. from Myiobius sulphureipygius (Sclater, PL) (Tyrannidae), N. myioborus sp. n. from Myioborus miniatus (Swainson) (Parulidae), N. platyrinchi sp. n. from Platyrinchus cancrominus Sclater, PL and Salvin (Tyrannidae), Platyacarus caulifer sp. n. from Glyphorynchus spirurus (Vieillot) (Furnariidae), Pl. dendrocinclae sp. n. from Dendrocincla homochroa (Scalter, PL) (Furnariidae), Pl. dendrocolapti sp. n. and Pl. picumnus sp. n. from Dendrocolaptes picumnus Lichtenstein, MHK (Furnariidae), Pl. sclerurus sp. n. from Sclerurus mexicanus Sclater, PL (Furnariidae), Proctophyllodes arremoni sp. n. from Arremon brunneinucha (Lafresnaye) (Emberizidae), Pr. euphoniae sp. n. from Euphonia hirundinacea Bonaparte (Fringillidae), Pr. vesicularis sp. n. from E. anneae Cassin (Fringillidae), Pr. parkesiae sp. n. from Parkesia motacilla (Vieillot) (Parulidae), and Pr. strictophyllus sp. n. from Coereba flaveola (Linnaeus) (Thraupidae). The female of Anisophyllodes pipromorphae Atyeo, 1967, previously known from two forms of males only, is described for the first time. Five new host associations are recorded for the following mites: Anisophyllodes pipromorphae from Mionectes olivaceus Lawrence (Tyrannidae), Diproctophyllodes dielytra (Trouessart, 1885) from Chiroxiphia linearis (Bonaparte) and Corapipo altera Hellmayr (Pipridae), Nycteridocaulus pectinatus Atyeo, 1966 from Tolmomyias sulphurescens (von Spix) (Tyrannidae), and Proctophyllodes thraupis Atyeo and Braasch, 1966 from Tangara icterocephala (Bonaparte) (Thraupidae). Two species, Proctophyllodes habiae Atyeo and Braasch, 1966 from Habia rubica (Vieillot) (Cardinalidae) and Platyacarus sittasomi Hernandes et al. , 2007 from Sittasomus griseicapillus (Vieillot) (Furnariidae), are recorded in Costa Rica for the first time. New diagnoses and keys to all currently known species are provided for the genera Anisophyllodes Atyeo, 1967, Atrichophyllodes Hernandes et al. , 2007, Nycteridocaulus Atyeo, 1966, and Platyacarus Kudon, 1982. Two new species groups, caulifer and minor, are established within the genus Platyacarus . The history of taxonomic investigations of proctophyllodine feather mites is briefly presented. We summarize host associations with passerine birds of the New World for these proctophyllodine genera and species, excluding the genus Proctophyllodes .
TL;DR: I compared the ecology and behaviour of these birds in the non-breeding season of 1976 at Wollomombi Falls, forty kilometres east of Armidale, NSW, to find the larger Brown Treecreeper dominated the other two.
Abstract: The White-throated Climacteris leucophaea, Red-browed C. erythrops and Brown C. picumnus Treecreepers are sympatric in south-eastern Australia. All three appear to feed largely on ants. I compared the ecology and behaviour of these birds in the non-breeding season of 1976 at Wollomombi Falls, forty kilometres east of Armidale, NSW. Here the three species occur in the same habitat and may be seen foraging on the same trees at the same time. The Brown spent almost half its time on the ground or on lwgs but the Red-browet and Whitethroated foraged almost entirely on trees. The last two species occurred at similar helghts and on branches of similar sizes but an different types of trees and had different foraging techniques. The White-throated mostly foraged by pecking and excavating pieces of bark from rough-barked trees such as stringybarks. The Red-browed typically peered and probed into ribbons of bark hanging from smoothbarked trees such as Yellow Box Eucalyptus melliodora. These two species also differed in social organization; the White-throated was territorial and usually solitary but the Red-browed occurred in groups of three or four individuals. In aggressive encounters the larger Brown Treecreeper dominated the other two. The Red-browed always dominated the White-throated although these two species are similar in size.
TL;DR: Five new feather mite species of the genus Trouessartia Canestrini are described from South American birds, including picumni from Picumnus fulvescens (Picidae), which is the first representative of this genus described from a bird of the order Piciformes.
Abstract: Five new feather mite species of the genus Trouessartia Canestrini are described from South American birds: Trouessartia latiducta sp. nov. from Phylloscartes kronei (Tyrannidae), T. basileuteri sp. nov. from Basileuterus culicivorus (Parulidae), T. sicaliae sp. nov. from Sicalis flaveola (Emberizidae), T. savanae sp. nov. from Tyrannus savana (Tyrannidae), and T. picumni from Picumnus fulvescens (Picidae). The latter species is the first representative of the genus described from a bird of the order Piciformes.
TL;DR: Molecular dating analyses revealed that the splits both between the African and Indo-Malayan Sasia and between the New World and Old World Picumnus occurred at ca 7.9 Myr BP, which corresponds to the beginning of the formation of the northern Hemisphere ice sheets and the accompanying expansion of grasslands throughout the world.
Abstract: The subfamily Picumninae (piculets) includes 3 genera and 30 species of tiny and short-tailed woodpeckers with a pantropical distribution. Within the Picumninae, two cases of intercontinentally disrupted distributions at the genus level occur. The first one concerns the genus Sasia (one species in Africa and two in southeast Asia) while the second concerns Picumnus (one species in southeast Asia and 25 in South America). These disrupted distributions, as well as several morphological differences, have lead some authors to place the African representative of Sasia and the southeast Asian representative of Picumnus in their own monotypic genera (Verreauxia and Vivia, respectively). To address the taxonomic status and biogeographic history of the piculets, we sequenced 2676 bp of DNA from one mitochondrial (ND2) and two nuclear markers (myoglobin intron 2 and β-fibrinogen intron 7). Monophyly of Picumninae could not be recovered with confidence, while monophyly of Sasia and Picumnus were always strongly supported. Molecular dating analyses revealed that the splits both between the African and Indo-Malayan Sasia and between the New World and Old World Picumnus occurred at ca 7.9 Myr BP. This time corresponds to the beginning of the formation of the northern Hemisphere ice sheets and the accompanying expansion of grasslands throughout the world. The spread of open areas in the northern parts of Eurasia and America prevented gene flow between tropical forest birds, such as the piculets, in Africa, southeast Asia and South America, respectively.
TL;DR: The behaviorally little-known Black-banded Woodcreeper (D. picumnus) proved to be an important species in the ant-following guild that I studied for over a year near Manaus, Brazil, and compared their behavior with that of related woodcreepers.
Abstract: In forests and nearby second growth at Manaus, Brazil, Black- banded Woodcreepers (Dendrocolaptes picumnus) regularly foraged with army ants as well as away from ants. Like ant-following Dendrocolaptes certhia and Hylexetastes perrotii in the same study area, they tended to wait or hitch slowly on vertical thick trunks, then sally to or peck at prey. They were intermediate in dominance status and in use of perches near the ground, where ants flushed most prey. Birds of all three species also foraged high above the ground when the ants sent probes up trees. Sleek-headed (presumed female) Black-banded Woodcree- pers supplanted their ruff-headed mates and helped in their disputes with neigh- boring pairs; one or both birds of a pair sang near roost sites in morning and evening; and pairs trespassed to a limited extent on their neighbors' areas. Large young were out of the nest with parents as early as July and as late as January, then wandered away from them. Breeding birds molted at about the time young left. At other study sites, the related species D. hoffmannsi and D. platyrostris behaved like D. picumnus. Woodcreepers of the genus Dendrocolaptes are among species of birds that regularly follow army ants for flushed prey in neotropical for- ests (Willis and Oniki 1978). The behaviorally little-known Black-banded Woodcreeper (D. picumnus) proved to be an important species in the ant-following guild that I studied for over a year near Manaus, Brazil. Here I report on studies of Black-banded Woodcreepers, and compare their behavior with that of related woodcreepers.