INSECUTOR INSCITI^ MENSTRUUS 107 



Spines on one side. Harpes with curved unmodified tip. Each 

 basal appendage with two spines, curved at tip. 



Larva : Head rounded anteriorly, posterior angles slight, 

 antennae moderate, smooth, uniform. 



Upper pair of dorsal head hairs single, lower double, ante- 

 antennal hairs in threes. 



Lateral dense stellate tufts on thorax. 



Comb of eighth segment in a triangular patch ; air tube 

 straight, smooth, slightly tapered, about four times as long as 

 wide, false pecten of many spines on apical two-thirds of tube. 

 Basally and ventrally a five-haired tuft of long hairs, apically 

 and ventrally three two-haired and three-haired tufts, dorsally 

 about six five-haired tufts. Anal segment as long as wide, 

 dorsal plate moderate, reaching well down the sides, dorsal 

 tuft of four long hairs and one smaller one, lateral hair single, 

 subventral hairs in a stellate tuft. 



Pupa: Thoracic mass small, a tuft of two hairs from near 

 margin of eye is bent twice ; respiratory trumpets small. Ab- 

 domen rather long, a pair of fan-shaped dorsal tufts on first 

 segment ; a pair of long single subdorsal hairs on second to 

 fifth segments. Tufts of feathered hairs on apex of seventh 

 and eighth segments. Paddles small, pointed. 



Larvae found in a jelly-like mass at the base of Heliconia 

 leaves. March, 1918, sandy district, Surinam. 



Some of these larvae have been kept for more than four 

 months in the laboratory before they pupated. 



We place this species provisionally in the genus IVyeomyia 

 (in the broader sense as used by Howard, Dyar and Knab), 

 although it has scales on the postnotum. It comes very near 

 the genus Dendromyia Theo., but the scales on the postnotum 

 are white as in Menolepis Lutz. 



Wyeomyia albosquamata, new species. 



Female : Proboscis short and stout, distinctly swollen at the 

 tip ; dark scaled with bluish gray reflection ; apex with small 

 hairs. Palpi short, one-eighth as long as proboscis, dark with 

 a few scattered white scales. Antennae about as long as the 

 proboscis, joints slender, subequal, brownish, whorls long, tori 



