Theomyia Edwards, 1930

The following combinations of characters distinguish subgenus Theomyia from the other subgenera of Culiseta. ADULTS – Maxillary palpus and proboscis dark-scaled, palpus of males very short, about 0.5 length of proboscis, slender, without setae; scutum with narrow pale scales forming an indefinite pattern of broad lines; antepronotum with narrow pale scales anteriorly, broad silvery scales posteriorly; prespiracular setae rather numerous; postspiracular area without scales; subcostal setae absent; mediocubital and radiomedial crossveins approximated; hindtarsus with pale ring at base of first tarsomere; laterotergite of abdominal segment I without scales. MALE GENITALIA – Ninth tergal lobes prominent, well separated, each with cluster of apical setae; gonocoxite elongate, tapering to apex; gonostylus long, slender; basal mesal lobe appressed to gonocoxite, crescentiform (ridge-like), with row of several setae on crest; aedeagus relatively large, strongly sclerotised; paraproct with 2 or 3 apical teeth. LARVAE – Head very large, broad; antenna short, about 0.25 length of head, stout, seta 1-S inserted slightly beyond mid-length of shaft, setae 2,3-A single, inserted on apex; thorax with pair of large thin-walled air sacs; comb of segment VIII with approximately 50 scales in triangular patch; siphon long, slightly tapered, very strongly tanned, index greater than 7; pecten comprised of about 25 bifid spines borne on proximal third of siphon; seta 1-S single, inserted at base of siphon, setae 1a-S and 2a-S absent; saddle complete, very strongly tanned, seta 1-X single, about 0.5 length of saddle; setae 2,3-X both very long, single; ventral brush (seta 4-X) with 8 pairs of long setae on grid, no precratal setae. PUPAE ‒ Trumpet short, with large oblique opening; seta 9-VIII with 6‒8 branches; paddle broadest distally, slightly emarginate distal to midrib, outer part broader than inner part, outer margin serrate; setae 1,2-Pa both absent. See genus Culiseta.