INSECT NOTES FOR IQIO. 9 



upon them were transplanted to the Insectory in June. In Sep- 

 tember, when examined, each gall was found to contain a single 

 mature, fully developed Aulax ; while all galls gathered from 

 plants growing in the open at this time were found to contain 

 larvae of Hymenopterous parasites. Galls gathered in the fall 

 of 1909 and kept over' winter produced only parasites (Torymus 

 flavicoxa, lot 767) which emerged in June. 



Burytoma gigantea. 



Is this species a true gall maker or is it parasitic upon the 

 larvae of Hurosta solidaginis? The galls in which they are 

 found cannot be distinguished externally from those inhabited 

 by the Trypetid excepting possibly by their slightly smaller 

 size. The cavity within the gall, however, is irregular in shape, 

 discolored and darkened, and filled with frass, differing in this 

 respect from the cell of the. dipteron which is clean and oval in 

 shape. Larvae of various sizes of the Hymenopteron were 

 found in the smaller galls collected March 29, while only pupae 

 of the Trypetid were present in the larger galls. In August 

 galls were again gathered and examined. Each contained a half 

 grown Burytoma larva and in none was there evidence of it hav- 

 ing been inhabited by the Trypetid. The fact that the frass 

 seems to be of plant tissue, that the gall cell is irregular in 

 shape, and that half grown larvae are found, all lead one to 

 believe that this species is not parasitic. 



HETEROPTERA. 



Blissus Icucoptcrus (Chinch bug). 



Complaints have been made that some insects, spoken of as 

 "ground fleas" kill the grass in large patches on the lawns in 

 Bar Harbor and in Bangor. An examination showed that the 

 injury was due to the nymphs of the Chinch bug which were 

 present in large numbers. Some years ago this trouble was 

 more wide spread. The details of these former occurrences and 

 the remedies suggested will be found in the Reports of the 

 Maine Station for 1892 and 1894 and also in Bulletin 91 (1903). 

 Lot 1276. 



