Subgenus Nyctomyia Harbach, 2013

The following combinations of features distinguish subgenus Nyctomyia from other generic-level taxa 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 subgenus Borichinda are indicated by a cross (†) and those that distinguish subgenus 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 Aedes.