INSECUTOR INSCITL^J MDNSTRUUS 189 



Aphiochasta capillaris, new species. 



Female. Length 3 mm. Black, slightly brownish on the 

 pleurae ; legs piceous, distinctly yellowish basally on the two 

 posterior pairs and the front pair entirely pale yellowish ; palpi 

 yellow ; posterior margins of abdominal segments pale ; halteres 

 black ; wings hyaline, with pale venation. Front as broad as 

 high; four proclinate bristles, the lower pair noticeably weak- 

 er than the upper and placed close together far below them ; 

 upper pair separated by one-third the width of the front ; inner 

 bristle of lower reclinate row placed far below the outer one 

 and much further from the eye ; upper row straight, placed 

 higher on the front than usual ; ocellar tubercle very prom- 

 inent ; median frontal groove present, but not very pronounced ; 

 antennas small, brown; arista thinly pubescent, one-half longer 

 than the front ; palpi moderate, with strong, rather short 

 bristles, cheeks each with two long macrochsetse. Mesonotum 

 shining, with a pair of distinct, widely separated dorsocentral 

 macrochsetse ; scutellum broad, with two strong bristles be- 

 hind and two much weaker ones laterally. Propleura with 

 one strong and several weak bristles near the coxa and two 

 weak ones below the spiracle ; mesopleura with a patch of 

 very small bristles above and one greatly enlarged, backwardly 

 directed one at the posterior edge. Abdomen slightly hairy 

 on the sides and near apex, but without prominent bristles at 

 the sides of the second segment. Legs slender, the anterior 

 tarsi greatly swollen, the metatarsus as thick as the thickest 

 portion of the tibia and the following joints also strongly 

 thickened ; cilia of hind tibiae distinct, but not large and placed 

 rather far apart, weaker on the basal half. Costa extending 

 just to the middle of the wing, with close-set rather short cilia, 

 those on the basal half much shorter than those on the apical 

 half ; first division of costa distinctly longer than the second 

 which is slightly more than twice as long as the third ; fourth 

 vein gently curved at base, nearly straight beyond and not re- 

 curved at the apex ; fifth and sixth strongly divergent apically ; 

 seventh very weakly defined. 



