Dwarf Longbill (Oedistoma iliolophus) [XC267902]
by John V. Moore from Keki Lodge area, Madang Province, Papua New Guinea (call)
Dwarf Longbill (Oedistoma iliolophus) [XC24834]
by Niels Krabbe from Varirata National Park, National Capital District, Papua New Guinea (call)
Subspecies
Relationship with Pygmy Longbill (Oedistoma pygmaeum), however, uncertain, and further genetic work required in order to reveal true taxonomic positions of the two. Species name often listed as iliolophum, but should be treated as a noun, and thus invariable. Subspecies fergussonis often listed as fergussone, but this name is not demonstrably adjectival and should be treated as a noun in genitive case, therefore invariable.
The following 5 subspecies are recognised:
cinerascens (Stresemann & Paludan, 1932) - Waigeo, in northern West Papuan Is.
affine (Salvadori, 1876) - Mountains of Vogelkop, in north-western New Guinea.
iliolophus (Salvadori, 1876) - Geelvink Is (Meos Num, Yapen), and mainland northern and central New Guinea from Geelvink Bay east, including Weyland Mts, Victor Emanuel Mts and Sepik Mts, to Huon Peninsula.
flavum (Mayr and Rand, 1935) - Southern and south-eastern New Guinea lowlands.
fergussonis (Hartert, 1896) - D'Entrecasteaux Archipelago (Goodenough, Fergusson and Normanby), off south-eastern New Guinea.
BirdLife International Species Factsheet