MOSQUITOS OR CULICIDAE OP NEW YORK STATE 



343 



lateral stripe of bright violet scales, a submedian and sublateral 

 line of dark, coarse bristles. Scutellum nearly black, ornamented 

 with violet scales and tipped with a few very long, black bristles. 

 Abdomen dark brown, flecked with yellow particularly on the 

 fifth, sixth and seventh abdominal 

 segments, the posterior lateral angles 

 of which are narrowly yellowish, the 

 third and fifth with a median, poster- 

 ior, subtriangular whitish patch, that 

 on the latter segment being much 

 larger than the other; genitalia yel- 

 lowish. Pleura with several irregular 

 patches of yellowish white and a line 

 of violet scales. Legs mostly dark 

 brown, yellowish beneath and with 

 narrow, white bands at the apexes of 

 femora and tibiae; ungues simple. 

 Wings subhyaline; veins brownish or 

 black, anterior veins thickly clothed 

 with nearly black dilated scales; a 

 double row of violet scales on basal 

 half of fifth longitudinal vein; fringe 

 silvery gray; basal portion of halteres 

 whitish, apical portion capitate, fus- 

 cous; first submarginal cell very short, 

 with petiole bearing about six very 

 large spatulate scales, second foi^k cell a little over one half the 

 length of the petiole; posterior cross vein a little less than its 

 length from the mid cross vein. 



Larva. Head jet black in early stages, distinctly longer than 

 wide and presenting an appearance very similar to that of Anophe- 

 les. Antennae jet black, short, swollen at the base, the incon- 

 spicuous tuft a little before the middle. Apex bearing two longer, 

 slender processes, a medium and a large, shorter one. Labial 

 plate narrowly triangular with about 10 conspicuous teeth, and 

 appears to be double like that of Anopheles. Dorsum of head 

 with two subdorsal pairs of baTbed spinelike processes. Compound 

 groups of plumose hairs also occur on the head and on the 

 prothorax, and are continued on the abdominal segments except 

 that in the case of the latter, the hairs are not plumose. Thorax 

 and abdomen greenish yellow, the thoracic segments being 

 distinctly broader, margined laterally by fuscous, and the entire 



'Fig. 80 Air tube of U . 

 sapphirina 



