Mt Wuzhi, Hainan.
Traditionally treated as a race of P. bicalcaratum, but differs in size and morphology. Male katsumatae differ from males of other taxa in P. bicalcaratum in their smaller size (effect size on wing 8.57, score 3); brilliant red and more extensive vs dirty grey to pale yellow and less extensive facial skin (3); green vs purplish ocelli, with a somewhat different shape (2); lack of elongate crown feathers (1); darker crown (1); more densely and neatly vermiculated body plumage (ns); browner vs greyer overall coloration (ns)#R#R#R. Iris colour may also be a character, and the taxa are in fact not each other’s closest relatives, bicalcaratum being sister to P. chalcurum with P. inopinatum sister to this pair#R#R. Monotypic.
C & SW Hainan (S China).
Food and feeding
Status and conservation
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