WYEOMYIA ABLABES 105 



Male. Proboscis longer and more slender than in the female, the palpi about 

 one-eighth as long as proboscis, slender, dark-scaled. Antenna similar to those 

 of the female, hairs of whorls longer and more abundant. Coloration as in the 

 female. Wings slightly narrower than in the female, the venation similar, the 

 outstanding scales sparser and broader. Mid legs shorter than fore legs, first 

 tarsal joint but slightly longer than second, last four joints bent inward; mark- 

 ings as in the female. Claw formula, 0.0-0.0-0.0. 



Length : Body about 3 mm ; wing 3 mm. 



Genitalia (plate 4, fig. 21) : Side-pieces over twice as long as wide, tapering 

 to tips; basal lobes rounded triangular, setose; three long setae in a line below 

 middle of side-piece. Clasp-filament with a long, slender stem, the tip expanded 

 and divided into three lobes; outer lobe long, slender, with a seta and small 

 hooked tip ; middle lobe broad, the tip broadly truncate, bearing rows of setae 

 and a thickened, lined, central area ; inner lobe small, slender, smooth. Harpes 

 concave, inner margin thickened, curved at tip, and obscurely dentate. Harp- 

 agones and unci forming small, basal cones. Basal appendages small, each with 

 three short stout setae. 



Larva, Stage IV (plate 88, fig. 281). Head broadest at posterior angles, sub- 

 quadrate, anterior margin rounded; antennas rather long, slender, a small 

 double hair beyond middle ; upper pair of dorsal tufts in fours, lower pair of two 

 long hairs; ante-antennal tuft multiple. Abdomen with the lateral hairs in 

 twos, the subdorsal tufts stellate ; trachese broad. Air-tube moderate, about four 

 times as long as wide, slightly tapering on outer half, the terminal hooks stout, 

 moderate ; numerous single hairs scattered rather evenly over the surface, those 

 nearest apex shorter and doubled. Lateral comb of eighth segment a row of 

 rather stout, single spines, becoming smaller ventrally ; tuft behind the comb of 

 two long hairs. Anal segment longer than wide, with a large dorsal plate with 

 rounded angles; dorsal tuft of two long hairs on each side, the lateral tuft of 

 posterior angle of plate of two long hairs; subventral tuft large, multiple, 

 moderately long. Anal gills equal, somewhat longer than the segment, broad, 

 with pointed tips. 



The larvae live in water at the leaf-bases of epiphytic Bromeliceae. Mr, 

 Knab found them in some small bromeliaceous plants on a tree about five feet 

 from the ground in a coffee plantation, associated with a single larva of 

 Megarhinus superbus; again along a stream near the previous locality on some 

 large trees overhanging the stream in some bromelias near the base of the 

 tree, associated with Wyeomyia ahehela, Megarliinus superbus, Culex rejector, 

 and a small Anopheles larva, which was not bred, probably Anopheles neivai; 

 also in bromelias on a large felled tree in a shaded place on a hillside in a 

 coffee plantation, associated with Culex rejector; also in a bromelia on a tall 

 mango tree about twenty feet from the ground, one of the plants dry, the other 

 containing water but choked with rubbish, a third full of larvae, associated with 

 Wyeomyia abebela and Culex rejector; of two other bromeliads on this same 

 tree, about fifty feet from the ground, one contained this species associated with 

 Wyeomyia abebela, Culex rejector, Culex stenolepis, and Megarhinus superbus; 

 the other contained the Culex and Megarhinus, but none of the Wyeomyia. 

 The adults flew in the vicinity of the trees, and bit in the daytime. 



Southern Mexico. 



Cordoba, larva in Bromeliacese in several places near the town, December 23, 

 1907, January 16, 1908, March 17 and 21, 1908 (F. Knab) ; Millan, State of 

 Vera Cruz, January 2, 1908 (F. Knab). 



