XXXV. Family PSIUD^. 



Front bristly on the upper part; broad. Face perpen- 

 dicular or somewhat retreating in profile, without vibris- 

 sae. Antennae moderately or very long, decumbent. 

 Abdomen rather slender; male genitalia but little prom- 

 inent, the ovipositor usually elongate. Wings large; 

 auxiliary vein absent or indistinct; third and fourth 

 longitudinal veins parallel ; all three basal cells distinct. 

 L,egs elongate; no preapical bristle on the tibiae. 



The flies of this family are of moderate size and elon- 

 gate. The larvae of those few species in which they are 

 known live in the roots or galls of different plants. The 

 larvae of Psila are slender, cylindrical, pale yellow, bare; 

 the posterior stigmata are small, rounded or button-like 

 processes of a black color. 



Fig. 104. 1, Loxocera; 2, Loxocera, head; j r Chyliza, wing; 



4, Chyliza, head. 

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