Antennae
bipectinate to apex in males and filiform in females.
Head, thorax and collar white; antenna light brown, white at base,
bipectinate; labial palpus white.
Pedicel cap-like and with a dorsal cleft, bearing 1 or more dorsoapical setae; flagellomere 1 frequently sharply deflexed, extended from ventral surface of pedicel; arista
bipectinate. Face uniformly sclerotised and arched, setose laterally.
Ctenidium attached dorsally along 3/4 and ventrally along 2/3 of its length;
bipectinate; dorsal filaments short and triangular; left branchial chamber so small so there can hardly be water-flow of importance.
asinina has two
bipectinate gills, positioned slightly to the left of the center in the mantle cavity and pointing anteriorly (Figs.
Adults in the Natada complex usually have antennae
bipectinate to the apex in males and are always filiform in females.
Small; antennae brown,
bipectinate except distal 1/3; vertex covered with short pale gray scales; compound eyes dark brown, naked and large; labial palpi upturned and porrect, covered with brown scales except for orange scales ventrally.