126 



ENTOMOLOGY. 



Family Phoridae. — Antennae 1-jointed, with a long bristle; femora 

 flattened. Phora incrassata Meigen, of Europe, lives iu hives on 

 decaying bee-larva?, and different species feed on both living and 

 dead insects, and sometimes decaying vegetable matter. 



Fig. 146.— Phora incrassata. a, larva; b. pupa-case. 



Family Asteidae. — Front bristly above. Asteia temm "Walker. 



Family Phytomyzidae. — Front bristly. Phytomyea clematidia Loew. 



Family Agromyzidae. — Front with "strong bristles; middle tibia? 

 with a terminal spur. Agromyza coronata Loew. 



Family Oscinidae. — Front without bristles, the crown having only 

 a few short ones; border of the mouth without vibrissa?, which, how- 

 ever, are represented sometimes by a small hair on each side. 

 Middle tibia? with small spurs; all the tibiae without an erect bristle 

 on the outer side before the tip. Costa of the wings without bristles. 

 The auxiliary vein is completely wanting; the anterior of the two 

 small basal cells is united with 'the discal cell, the posterior one is 

 totally wanting. The species of C'hlorops are injurious to cereals, 

 the maggots living in the stalk. Meromym amerieana Fitch. 



Family Drosophilidae. — Front with bristles above; face with distinct 

 sub-antenna! furrows; at the border of the mouth there is a feeble, 

 frequently rather indistinct small vibrissa. .Middle tibiae with very 

 feeble spurs; on the outer side of the tibiae there is either a very 

 small or no erect bristle before the tip. Wings without bristles on 



Fig. 147.— Apple-worm and its fly. 



the costa; the first longitudinal vein is exceedingly abbreviated; of 

 the auxiliary vein there is only a rudiment ; the discal cell is usually, 

 but not in all genera, united with the Foremost of the two small 

 basal cells. Claws and pulvilli very small. The larva of an unde- 

 termined species of Drosophila (Fig. 14?) injures stored apples, 

 while Drosophila cvmpelophila Loew infests pickled fruit. 

 Family Geomyzidae. — Vibrissas distinct. JHastata pulckra Loew. 



