Subgenus Tricholeptomyia Dyar & Shannon, 1925

ADULTS ‒ Unornamented mosquitoes; vertex of head with broad dark decumbent scales, sometimes with pale scales on midline or posteriorly, ocular scales white or whitish with subdued blue reflections, 1 or 2 ocular setae (usually 2) on either side; maxillary palpus 0.08‒0.15 length of proboscis; scutum with narrow scales (moderately broad in Tp. apoensis); dorsocentral setae present or absent; prescutellar setae present; postpronotal setae present (absent in Tp. barraudi); scales of thoracic pleura white or whitish; subspiracular scales present; wing veins with narrow scales, sometimes somewhat broader distally on veins R2 and R3; all femora with anterior surface entirely dark-scaled, tibiae and some tarsomeres often paler ventrally; hindlegs of both sexes with single unguis (not paired), pale scaling of abdominal terga white or whitish. FEMALE GENITALIA – Postgenital lobe with apical emargination; insula with 3‒10 marginal setae, with 0‒3 basolateral setae on each side; 3 spermathecal capsules. MALE GENITALIA – Small, retracted or exposed; ninth tergal lobes with relatively long slender attenuated setae (spine-like in Tp. christophersi); gonostylus rather stout, clubbed distally; lateral plate of aedeagus without sternal lobe. LARVAE – Maxilla with short apical tooth and typical maxillary brush; hypostomal suture unapparent; seta 15-C inserted approximately midway between collar and anterior margin of labiogula; setae 6-M and 7-T single, very stout and rigid (6-M relatively long and sender in Tp. delpilari and Tp. nepenthicola); seta 8-M,T very small, minute or absent; seta 14-I‒VI minute; siphon with minute lateral seta, usually branched. PUPAE – Seta 1-CT short; seta 1-I weakly developed, often single (except in Tp. delpilari); other abdominal setae short and slender or longer and relatively stout; punctures present on terga III‒V; seta 9-VII,VIII usually well developed (small in Tp. apoensis and Tp. barraudi); paddle with spiculate margins. See genus Tripteroides.