Nyctomyia Harbach, 2013

The following combinations of features distinguish Nyctomyia from other genera of tribe Aedini. Characters that diagnose Nyctomyia in the phylogeny of Reinert et al. (2009) are indicated by an asterisk (*), those that distinguish Nyctomyia from Borichinda are indicated by a cross (†) and those that distinguish Nyctomyia from Isoaedes are indicated by a double cross (‡).

ADULTS – ‡Compound eyes narrowly separated; †‡maxillary palpus of males very short, 0.3 length of proboscis, †‡comprised of 4 palpomeres, palpomere 4 vestigial; ‡scutum with some pale scaling, *scales on anterior part of antealar area all pale; †midlobe of scutellum with narrow scales; *postpronotal scales all narrow; ‡postspiracular scales present; ‡subspiracular scales absent; *costal scales of wing all dark; †remigial setae absent; *hindtibia dark-scaled; †foreungues of males both toothed. FEMALE GENITALIA – *Intersegmental membrane between segments VII and VIII short to intermediate in length, segment VIII fully retracted into segment VII; *tergum VIII with setae on distal 0.60 or less, *more than 14 scales present; *sternum VIII with more than 10 scales, covering much of surface; *postgenital lobe ventral index 0.47−1.64; insula without setae. MALE GENITALIA – ‡Sternum IX long, ‡setae present; †‡gonostylus long, enlarged distally; †apex of claspette narrow with few setae; *aedeagus widest in distal third. LARVAE – †Seta 4-C short, 3- or 4-branched; †‡seta 14-C single or double, longer than seta 15-C; †seta 1-P longer than seta 2-P; †‡setae 1,3-P usually double, infrequently triple; ‡seta 5-P double, *as long as or shorter than seta 6-P; ‡seta 5-T small, single; †‡seta 2-I,II large, 2- or 3-branched, †‡seta 2-III–VI small, single or double, inserted anterior to seta 1; †‡seta 11-I large, 2- or 3-branched; *seta 3-II single; †seta 5-II–VI small, usually †‡single; seta 7-II single, short, about half length of seta 6-II; †seta 9-III–VI inserted anterior to and close to seta 7; †seta 10-II–V inserted lateral to setae 11,12; †seta 13-III–V single; †seta 5-VII small, single; ‡comb scales spine-like, in single row; †distal 1 or 2 pecten spines more widely spaced than others; ‡seta 1-X small, single; †‡ventral brush (seta 4-X) with 1 precratal seta, *cratal setae on grid with transverse bars, *seta 4d-X single or double (rarely triple), not plumose. PUPAE – †Seta 7-CT longer than seta 6-CT; ‡seta 3-III single; ‡seta 6-III single or double; †seta 6-VII inserted posteromesal to seta 9; †seta 9-IV–VI inserted posterior to seta 8, †‡seta 9-VII single; †‡apex of paddle slightly produced. See Aedini.