Caenomyiella Harbach & Peyton, 1990

ADULTS ‒ Female unknown; male incompletely known, probably resembling habitus of species of subgenera Wyeomyia and Decamyia. Proboscis slightly shorter than forefemur; mesopostnotal setae present.  MALE GENITALIA ‒ Tergum IX lobes small, with strongly developed setae; gonocoxite without long setae except for long lateral seta and tergal triad; gonostylus with strongly developed lobe C, borne on sternomesal margin near base; aedeagus broad, width about two-thirds length, submedian tergal arms weakly connected or unconnected; apical tergal arms fused (forming an apical tergal bridge); proctiger normal, cercal setae present. LARVAE ‒ Setae 4‒6-C single, widely separated, seta 6-C inserted anterior to seta 7-C; seta 1-A single, inserted near apex of antenna; maxilla broad, with strong apical tooth, seta 4-Mx single, shorter than maxillary brush, hypostomal sclerite present, bearing seta 6-Mx; seta 14-C strongly developed, significantly longer than seta 15-C, inserted anterior to setae 12,15-C; seta 1-P with few branches, as long as or slightly shorter than setae 2,3-P; seta 4-P relatively short, multi-branched; seta 11-P,M,T single, short, spine-like; seta 7-M weakly developed, branched, similar to seta 1-M; seta 4-T small, single or double; seta 8-T inserted laterally between seta 7-T and sclerite bearing setae 9‒12-T; seta 13-T multi-branched, not much longer than half length of thorax; seta 1-I,II small, developed like seta 4, seta 1-III‒VI usually double, about half length of segment; seta 2-I‒VII short, single, seta 2-III‒VII inserted far mesad of seta 1 near midline of segment; seta 9-I‒VI short, single; seta 13-II inserted far anterior to seta 7 and near midline, seta 13-III‒VI inserted on level with or anterior to seta 7; comb plate absent, dorsal comb scales long, pointed, with short fringe proximally at sides, ventral scales short, broad, fringed distally; siphon with single mid-posterior row of pecten spines on distal two-thirds, seta 1-S inserted near base of siphon, setae la,2a-S each in more or less straight row; seta 4-X much shorter than setae 1‒3-X, double. PUPAE ‒ Cephalothorax and abdomen without spots; trumpet slightly flattened, not laterally expanded; seta 1-I strongly developed, with 3 or 4 primary stems and numerous distal branches; seta 2-II‒VII inserted near posterior margin of segments, seta 2-II inserted between setae 1,3-II, seta 2-III‒VII inserted mesal to seta 1; seta 3-II,III,VII inserted lateral to seta 1, seta 3-V,VI inserted mesad of seta 1; seta 6-II single, long, reaching well beyond posterior margin of tergum III, seta 6-VII inserted on sternum ventrad of seta 9-VII; paddle short, length <1.5 greatest width, extending slightly beyond apex of genital lobe in both sexes, apex fringed with long spicules that decrease rapidly and progressively on both inner and outer margins. See genus Wyeomyia.