2 ENTOMOLOGICAL SOCIETY 



Illinois,* in which, in discussing the host relations of parasitic 

 Hymenoptera, he advanced the idea that the classification of the 

 group would undoubtedly be affected by a more accurate know 

 ledge of host relations, and entered a plea for careful records. 

 He was therefore greatly pleased to see from Mr. Ashmead's 

 statements that the exact knowledge of habits, largely due to the 

 work of Washington entomologists, had led Mr. Ashmead to 

 discoveries affecting classification, thus justifying the 12-year-old 

 prophecy. He referred especially to the new genus separated from 

 Bracon to which Mr. Ashmead's attention had been called by 

 the fact that all of the members were parasitic upon Cecido- 

 myiidae instead of upon beetles, as is the general rule with the 

 genus Bracon. 



Mr. Ashmead stated that he had discovered that the tribes of 

 Cynipidae which he had erected correspond exactly with the 

 groups of plants on which they make their galls, such as Quercub, 

 Rosacese, Acacia, etc. ; and, on the other hand, from the nature 

 of the host, he had been enabled to explain the differences in 

 structure. 



Mr. Busck then read extracts from his paper on the generic 

 name of the codling moth.t 



The paper was discussed by Messrs. Schwarz, Simpson, 

 Howard, Dyar and Gill. 



Dr. Dyar mentioned a peculiar Lepidopterous larva which 

 had been seen by several members of the Society at Plummer's 

 Island, Maryland. It occurs only in spring. Mr. Barber 

 brought in some last May (May, 1902), and the first moth had 

 just emerged (April, 1903). The plant is Rhacelia dubia, ac 

 cording to Mr. Morris ; the larvae live exposed on the plant and 

 are brightly colored. The moth that emerged is not well 

 developed and the color seems grayer than normal, but other 

 wise it agrees exactly with specimens of Ethmia zellericlla 

 Chambers, from Texas. The following description of the larva 

 was handed to the Secretary for publication : 



* See Insect Life. in. No. 6. p. 277, March. 1891. 

 f Published in Journ. N. Y. Ent. Soc , xi, No. 2, pp. 106-111, June, 1903 



