658 



STATU I50AKD OF AGRICULTURE 



Family SYRPHIDiE. 



These an- " llowcr-flics," usually brightly colored ami banded with yellow 

 on a black, bronze <>r blue ground. They have very short, aristate or stylate 

 three-jointed feelers, barrel-shaped bodies, and somewhat flattened abdomen, 

 varying from Blender to broadly oval. Sometimes they are almost bare and 

 resemble wasps in appearance and habits; at others they arc hairy and resem- 

 ble bees even in the droning or buzzing noise that they make. The mouth 

 parts are formed for scraping and lapping only, and they feed upon honey or 

 pollen. 



In larval habits they vary greatly. Some are predatory and feed upon plant 

 lice ; these are usually wrinkled, pointed anteriorly, and they live among their 

 prey upon leaves of plants. Others feed in plant tis- 

 sue, bring more or less maggot or grub-like ; and yet 

 others arc scavengers, the larvae feeding in the foulest 

 ezcrementitious matter: these are usually furnished 

 with a long breathing tube from the anal end, and are 

 known as rat-tailed lame. Some few species seem to 

 feed upon pollen, and at least one form occurs between 

 the leaf and stalk of corn, feeding upon the juices. Yet, on the whole, the 

 species are beneficial 



MICRODON Meig. . 



M. fusoipennis Macq. Westville, VII, 2. 



M. gflobosus Fabr. Westville, VII, 2, IX, 10, Anglesea, IX, 4. 



M. megalogustiM- Snow. Clementon, V, 80. 



M. tristis Loew. Clementon, V, 9, 80, Newark, VI, 14. Dover, VI, 17. 



Fig, 807.- \ " i-'i tailed ' 

 larva 



CHRYSOTOXUM Meigen. 



O. laterals Loew. Westville, IX, 10. 



C. pubescens Loew. New Brunswick (Sm), Woodbury, IV, 2 (Jul, Atco r 



1\, L9 (Greene). 

 O. ventricosum Loew. Newark, VI, 27. 



PIPIZA Fall. 



P. modostn l.oew. Atco, VII, 

 0, Clementon, Y, 80. 



P. pistion Will. Clementon, Y, 

 80, Newark, VI, 14, River- 

 ton, VIII, 14. 



P. puh-lu-lhi Will Sandy Hook, 



\ 111, 11. 

 P. calcarata Loew. Ihmnfield, 

 Del. Water Gap, VII, 12, 

 Riverton, VII, 4. 



P. sp. Avalon, VI, i>. 



root-louse Syrphid : 



..'.l.irv.i: 6, pupa; C, adult: all enlarged. 



