212 



NEW YORK STATE MUSEUM 



Several Etiropean species have been reared from Carex. This is 

 likewise true ofH. caudata Felt and it is probable that a number 

 of other American species live in associated plants. 



, ^^ \ 



.0 



Fig. 41 Hormomyia americana: a, side view of apex of last tarsal segment and 

 claws of the foreleg; b, same of last tarsal segment and claw of the hind leg 

 (enlarged, riginal) 



Key to Species 



Males 

 a Antennae composed of more than 20 segments 



b Abdomen yellowish; length 5 mm. Antennae with 25 segments, the 



palpi uniarticulate americana Felt, C. 91 



bb Abdomen yellowish with the fifth, sixth and seventh segments dull orange; 

 length 7 mm. Antennae with 27 segments, the palpi biarticulate ; vent- 

 ral plate long, broad and broadly rounded.. p a 1 u s t r i s Felt, C. 1205 

 bbb Abdomen uniformly fuscous yellowish; length 6 mm. Antennae with 26 

 segments, the palpi biarticulate; ventral plate long, broad, deeply and 

 triangularly emarginate n e e d h a m i Felt, C. 788 



Females 

 a Large, at least 4 mm long 



b 24 antennal segments, length 7 mm. Abdomen a variable yellowish; 

 antennal segments with 2 circumfila, the fifth cylindric, with a length 

 three times its diameter and with a distinct constriction at the basal 

 third; lobes broadly oval c i n c t a n. sp. C. 1345 



