248 



THE MONTHLY BULLETIN. 



Distribution. — ^Very common in all sections of the State. 



Hosts. — The larvfe feed upon a great number of plant lice, including- 

 the black peach aphis {Aphis persiccB-niger Smith), the melon aphis 



Fig. 243.- — The American syrphid fly, 8i/rphus ameri- 

 canus Wied. (Essig, P. C. Jr. Ent.) 



{Aphis gossypii Glover), the green citrus aphid {31acrosiphum citrifolii 

 Ashm.), the orange aphid {Toxoptera aurantice Koch). 



THE SMALL SYRPHID FLY. 



Allograpta oMiqua Say. 

 (Pig. 244.) 



General Appearance.— This is one of the smallest syrphid flies met 

 with in the State, being seldom over one fourth of an inch long. The 

 body is slender; eyes dark red; face yellow with dark median line; 

 antenna amber brown; thorax iridescent green; scutellum and legs 

 light yellow; abdomen dark with four transverse yellow bands on the 

 dorsum, and yellow longitudinal markings at the base of the amber or 

 dark brown abdominal tip. 



Distribution.— This is one of the most widely distributed and com- 

 mon species found in the State, being present in practically every 

 locality. 



Fig. 244. — The small syrphid 

 fly, Allograpta obliqua Say. (Es- 

 sig, P. C. Jr. Ent.) 



Hosts. — The larvae of this fly works upon a great number of different 

 lice and adults have been bred from those feeding upon the corn-leaf 

 aphis {Aphis maidis Fitch.), the orange aphid {Toxoptera aurantice 

 Koch), the melon aphis {Aphis gossypii Glover). 



