Æthopyga arolasi Bourns and Worcester, Minnesota
Acad. Nat. Sci. Occ. Papers (1894), 1, 17; McGregor and Worcester,
Hand-List (1906), 98.
Sulu (Bourns & Worcester); Tawi Tawi (Bourns & Worcester).
"Adult male.--Slightly larger than Æthopyga bella. Upper surface as
in that species; fore breast much more broadly streaked with orange;
abdomen and under tail-coverts light lemon-yellow, not white.
"Adult female.--Above uniform olive-green. Does not show the bright
yellow rump of Æthopyga bella. Under surface inclining to white, but
breast, abdomen, and under tail-coverts washed with light lemon-yellow.
"Average measurements from ten males: Length, 87; culmen, 18; wing,
40; tail, 33; tarsus, 12. From four females: Length, 83; culmen, 16;
wing, 40; tail, 25; tarsus, 12." (Bourns and Worcester.)