THE INSECTS OF NEW JERSEY. 729 



D. serrulatse O. S. Montclair, Ft. Lee district, Lakehurst, common 

 locally, gall on bud of alder, "Alnus serrulatus" IX-VI (Bt) ; Staten 

 Island (Ds). 



D. solidaginis Loew. Common throughout the State; gall on goldenrod 

 (Bt); Clementon VDI (Jn). 



ARNOLDIA Kieffer. 



A. fraxinifolia Felt. Newfoundland VII, 25, gall on young ash leaflets 

 (Ft). 



A. vitis Felt. New Jersey district (Bt) ; from galls of "Lasioptera vitis" 

 (Ft). 



ASPHONDYLIA Loew. 



A. azaleae Felt. New Jersey district (Bt) ; galls on buds of azalea (Ft). 

 A. conspicua O. S. New Jersey district; gall on stem of cone-flower, 

 "Rudbeckia triloba" VIII, IX (Bt). 



A. globulus O. S. New Jersey district; gall on stem of sun-flower, "Heli- 

 anthus gigantea" VIII, IX (Bt). 



A. patens Beut. New Jersey district; gall on aster VIII, IX (Bt). 

 A. solidaginis Beut. Montclair, Ft. Lee district, gall on leaf of golden- 

 rod (Bt). 



RHOPALOMYIA Rubs. 



R. fusiform is Felt. Ft. Lee district; galls on leaves and flowers of 

 fragrant goldenrod, "Solidago grarninifolia" VIII, IX (Bt). 



R. capitata Felt. Common at West Nyack, N. Y., just north of the New 



Jersey line (Ft). 



R. inquisitor Felt. Common at West Nyack, N. Y. (Ft). 

 R. major Felt. Staten Island V, 31 (Ft). 

 R. anthophila O. S. Staten Island (Ft). 



MAYETIOLA Kieffer. 



M. destructor Say. The "Hessian fly." Sometimes very destructive 

 north of the red shale line. The method usually adopted to avoid 

 injury is to plant as late as is safe. In the southern counties it may 

 be delayed until after mid-September and injury is rare; in the 

 northern counties planting soon after September 1st is usual and 

 this is dangerous. The flies usually emerge after the early Septem- 

 ber rains and are in the fields for two weeks thereafter. Sometimes 

 'a scant early seeding is made as a trap, and this is plowed under 

 about September 10 and the real crop put in. 



CONTARINIA Rond. 



C. pyrivora Riley. The "pear midge." Infests pear, preferring the Law- 

 rence, causes an irregular lumpy growth, the larvae eating out the 

 core in June. This species has been gradually worked out and now 

 maintains itself only in a few places near New Brunswick and 

 Newark. 



C. tritici Kirby. Locally and seasonally abundant north of the red shale 

 in wheat kernels. Not really injurious since 1889. 



