CATALOGUE OF INSECTS. 687 



Family TRYPETIDiE. 



The "peacock flies," so-called because of their habit of elevating the wings 

 and strutting about, peacock like. These wings are often prettily marked and 

 spotted with black or brown. In the female the abdomen is often prolonged 

 into a horny ovipositor. The flies are gracefully built, fly slowly and are 

 noticeable by keeping their wings in constant motion. Most of the members 

 of the series feed in plant tissue of some kind, either in leaves, in stems or in 

 fruits, and a number of them are gall-makers. The only species of economic 

 importance in this State is the " apple maggot," which injures some of the 

 early summer varieties. The only remedial measure is the prompt removal of 

 all fruit from trees known to be infested. 



ACIDIA Desv. 

 A. fratria Loew. A New Jersey specimen without data. 



STRAUSSIA Desv. 



S. longipennis Wied. Orange Mts., Elizabeth, V, 21 (Kp), Caldwell (Cr), 

 Fort Lee (Bt), Camden, V, 26 (Kp). 



ZONOSEMA Loew. 

 Z. flavonotata Macq. Glassboro, VII, 6 (Greene). 



PLAGIOTOMA Loew. 

 P. obliqua Say. Clementon, VIII, 6, New Jersey (Bt). 



TRYPETA Loew. 



T. palposa Loew. Anglesea, V, 28-30 (W), Avalon, VI, 8 ; on the thistle. 

 T. vernonise Loew. Clementon, VIII, 6, Lenola, VIII 7, Westville, VIII, 



16 : on iron weed. 

 T. achillese Johns. Avalon, VI, 30: on yarrow {Achillea millefolium). 



CEDASPIS Loew. 



O. atra Loew. Riverton, VI, 18, Cape May, VI, 14, Avalon, VI, 8, Anglesea, 



V, 28 (W). 

 O. polita Loew. Generally distributed ; forms a gall on Solidago (Bt). 



RHAG-OLETIS Loew. 



R. cingulata Loew. Long Branch, VII (O S), Atlantic Highlands, VII, 11 



(Love). 

 R. tabellaria Fitch. Caldwell (Cr), Bueua Vista, VII, 10 (Li), Jamesburg, 



VII, 4. 

 R. pomonella Walsh. Montclair, the apple maggot, locally injurious ; but 



seems confined to very few varieties (Sm). 



