594 REPORT OF NEW JERSEY STATE MUSEUM. 



a 



Fig. 239. The Pigeon Tremex, T. columba: a, larva; b, its head 

 enlarged; c, pupa of female; d, pupa of male; e, female adult. 



TREMEX Jur. 



T. columba Linn. The larva bores into the trunks of a variety of shade 

 and orchard trees throughout the State, IX, sometimes causing con- 

 siderable injury. It is popularly known as the "Pigeon Tremex," and 

 no practical method of dealing with it is known. It is kept down by 

 parasites, and as it usually attacks only weak or dying trees we 

 can lessen the danger by keeping trees in good condition. 

 "T. sericeus" Say, is now regarded as a variety. 



Family CEPHID^. 



These are loose-jointed, slender saw-flies of rather soft texture, with 

 long, slender, peculiarly jointed antennae. The ovipositor is a little pro- 

 duced and the larvse live in stems of plants and the tender growth of 

 trees and shrubs. 



JANUS Steph. 



J. integer Nort. (Cephus:=flaviventris Fitch.) Is the currant stem 

 gircller, the larva tunnelling the pith of the currant. Its work is not 

 rarely seen, but the insects are not common. 



