345 



A female taken by Professor Aldrich at Lafayette, Ind., July 25, 

 1914, differs from the type in having the dorsum of the abdomen dark- 

 ened. 



Coquillett's description of dhrrsa is not very satisfactory, but the 

 points of difference between it and paUidircntris are quite sufficient to 

 warrant me in concluding that the species just described is not the 

 same as divcrsa. 



Bezzia Kieffer 



This genus is separable from Palpomyia by the absence of the cross 

 vein which in that genus connects the first and third veins. 



The only species which has been reared from the larva is setulosa 

 Loew. A description of the early stages of this species is given by 

 Johannsen in Bulletin 86 of the New York State Museum, 1905, p. 

 102, and a brief description of all the stages is given herewith. The 

 habits of the adult are unknown. 



Key to Species 



1. Wings with 2 black spots 1. punctipennis. 



— Wings unspotted 2 



2. Only the fore femora with spines 3 



— At least the fore and hind femora spinose 9 



3. Halteres black 4 



— ■ Halteres pale, rarely brownish 6 



4. ]\Iesonotnm black, with dense gray pruinescence ; scutellum yellow ; 



legs mostly yellow ; fore femora with a pair of widely separated 

 spines on ventral surface 2. cockerelU. 



— Mesonotum glossy black, not distinctly pruinescent ; legs mostly 



black ; fore femora with more than 2 spines on ventral surface ... 5 



5. Claws simple ; antennae brown, if turned back reaching to middle of 



mesonotum 3. venustula. 



— Claws with central tooth on inner side ; antennse exceeding length 



of head and thorax combined 4. flavitarsis. 



6. Hind tibiae with distinct bristles ; legs black, tarsi except the narrow 



apices of joints, a ring before apices of fore femora, and both ends 

 of fore and mid tibife except their extreme apices yellow ; abdo- 

 men black 5. media. 



— Hind tibiffi without bristles ; legs not colored as above 7 



7. Abdomen black 6. iwuinosa. 



— Abdomen partly yellow S 



8. Abdomen pale yellow, dorsum of first segment brown ; legs yellow, 



eox£e, a band before apices of fore and mid femora, and one near 

 base of fore and hind tibia?, and hind femora except extreme bases 

 blaok 7. varicolor. 



— Basal half of a])domen pale yellow, apical half l)lackened; legs yel- 



