CATALOGUE OF INSECTS. 



G77 



Family MUSCIDiE. 





Fig. 320. — Larva, pupa and larval struc- 

 tures of the horn-fly : enlarged. 



This family contains t be common house-fly, 

 the stable fly, the horn-fly, the blow-fly, and 

 similar well-known insects. All of these have 

 the antennal bristle hairy or plumose to the 

 tip, but have no spines on the abdomen except 

 at the end, about the anal segments. 



The larvae of these flies are true maggots, 

 and with few exceptions they live in decaying 

 material of all kinds, excrement, putrid meat, 

 garbage, &c. Eggs are laid in masses and 

 hatch in a few hours, the larval life being 

 often scarcely a week. 



As scavengers these insects are useful, but 

 they become a nuisance in the house and in 

 the stable. While the majority of the flies 

 gain their living by scraping and lapping 

 liquid or pasty foods, a few of them are 

 blood-suckers, the mouth being developed for 

 piercing and sucking. 



CYNOMYIA Desv. 

 O. cadaverina Desv. Westville, IX, 9, Clementon, V, 9. 





POLLENIA Desv. 



rudis Fabr. Common, Westville, VII, 26, Merchantville, VI, 28, Clemen- 

 ton, VIII, 9 (Jn), New Brunswick (Sm), Palisades, V, 24 (Love) : this 

 is a larger fly than the common house-fly, but is also found on windows, 

 especially in late summer. 



CHRYSOMYIA Desv. 



C. macellaria Fabr. Common, Anglesea, VII, 4, 10, 19, Westville, VIII, H> 

 (Jn), New Brunswick (Sm) : the larva of this fly, known as the screw - 

 work, has done great harm in the southwest, but is not injurious in New 

 Jersey. 



PHORMIA Desv. 



P. terrse-novse Desv. Westville, VI, 15, Dover, VI, 17. 

 P. regina Meig. Common, Westville, V, 15, Jamesburg, VII, 4, Avalou, VII, 

 22, (Jn), New Brunswick (Sm), Caldwell (Cr). 



CALLIPHORA Desv. 



C. erythrocephala Meig. Common, Westville, Riverton, New Brunswick, 

 Snake Hill, Dover, IV to X : throughout the State. 



