INSECT NOTES FOR IQII. 243 



Pimpla inquisitor. 



Several specimens of this species were reared from pupae of 

 the spruce-bud moth (Tortrix fumiferana) which were sent 

 from Greenville Junction, Maine, in July. Lot 1366 Sub. i. 



Braconidak. 

 Opius sp. 



Several specimens of an undescribed species belonging to 

 the above named genus were reared from the beet maggot or its 

 pupa (Pcgomyia vicina) July 21, Orono, Me. Lot 1392 Sub. i. 



Bracon sp. 



Two specimens belonging" to this genus and several Chalcids 

 {Blachertes sp.) were reared from the insects which were in- 

 festing the cones of yellow spruce, noted under Coleoptera 

 (Carpophilus) July- August, Orono, Me. Lot 1386 Sub. 5. 



Chaecidae. 

 Blachertes sp. 



Associated with the Bracon sp. noted above. Lot 1386 Sub. 5. 



Monodontonierus aereus {a parasite of the brozm-tail moth). 



About five years ago this species was imported from Europe 

 and distributed in Massachusetts by the Entomologists engaged 

 in the Gypsy and brown-tail moth investigations. The species 

 has gradually been spreading in Massachusetts and last year 

 was discovered in Maine. In March (1911) from some brown- 

 tail winter nests received from Walpole, Maine, a few speci- 

 mens of M. aereus emerged. This circumstance excited our 

 interest, and at our request through the kindness of Mr. Wm. 

 M. King about 100 more nests from the same locality were sent 

 us from which we obtained over 60 specimens of the parasites. 

 This record of the natural spread of introduced species of para- 

 sites is most encouraging and augurs well for the future aid 

 furnished in the control of pests by their natural enemies. An 

 account of the introduction of this species in Massachusetts is 

 found on pages 43-' et seq. of a bulletin entitled "Parasites" 

 issued in 1910, under the direction of F. W. Rane, State For- 

 ester of Massachusetts, Boston, Mass. Lot 1336. 



