INSECUTOR INSCITI^ MENSTRUUS 113 



Claw formula: 0.0-0.0-0.0. 



Length : body, 3.5 mm. ; wing, 3 mm. 



Genitalia : Side piece twice as long as wide, a small pointed 

 lobe on inner margin present, clothed with fine hairs. Four 

 long stout hairs in a row beyond the middle of the side piece. 

 Clasp filament simple, slightly broadened beyond the middle, 

 outer side with some small spines. Harpes with curved dentate 

 tip, each basal appendage with three broad spines, curved at 

 tip. 



Larva : Head rounded. Antennae moderate, uniform, 

 smooth, a two-haired tuft beyond the middle. All head hairs 

 multiple. Comb of eighth segment in a patch. Air-tube at- 

 tenuated from near the base, rather long, slender at apical part. 

 A false pecten of very fine spinelike hairs on basal half of 

 tube. All hairs on tube single, except a few at base, decreasing 

 in length toward the tip. Anal segment as long as wide. Anal 

 plate moderate. Subdorsal hairs placed in a group of two long 

 ones and a shorter one single. Lateral hair single, subventral 

 hairs in a small tuft. Anal gills twice as long as the segment. 



Pupa : Thoracic mass subpyrif orm, small, a tuft of two long 

 hairs projecting from near margin of eyes, bent once, and a 

 tuft of three straight hairs ; respiratory trumpets rather long, 

 narrow. Abdomen rather long, a pair of fan-shaped dorsal 

 tufts on first segment ; on second and third segments sub- 

 dorsal hairs single, long; on second segment a very long single 

 lateral hair present ; on fourth, fifth, and sixth segments sub- 

 dorsal hairs double, long ; on seventh and eighth segments a 

 dense multiple tuft of feathered hairs. Anal paddles small, 

 pointed. 



Larvae found in Bromeliacese ; sandy district of colony 

 (March, 1918); Lawa River (March, 1917), Sarah Creek 

 (January, 1919). Surinam. 



IVyeomyia splendida comes near to Wyeomyia trinidadensis 

 Theo. and Wyeomyia longirosfris Theo., but it is a very distinct 

 species by the coloration of the legs and the peculiar male 

 genitalia with the simple clasp-filament. 



