294 JOURNAL OP ECONOMIC ENTOMOLOGY [Vol. 2 



though Doctor Chittenden writes that he found some sawfly larvae 

 working on pecan trees in Maryland, but does not say what species 

 they wert. 



In our attempt to breed these larvae we hurriedly placed them on 

 leaves, the stems of which were kept in a tumbler of water, the whole 

 being placed on a table under a glass cylinder without any earth. 

 They, therefore, had no opportunity to enter the earth to pupate, 

 had they so desired. 



They spun their cocoons at the bases of the leaves among the cot- 

 ton and among the debris that had accumulated on the table, and a 

 few spun cocoons here and there among the leaves. 



We were both absent from the college for a day at this time and 

 found on our return that all the cocoons had been spun in our ab- 

 sence, May 6. 



On May 11 adults appeared, which we sent to Doctor McGillivray 

 for identification. In a letter of June 8 he informed us that they be- 

 longed to the species Acordulecera maura MacG., which he had just 

 described in the Can. Ent., Vol. XL, May, 1908, p. 168. He there 

 records this species from North Mt., Penn., Ames, Iowa, and Ithaca, 

 New York. 



From our observations on this insect, we conclude that it might be- 

 come of some economic importance if it ever happened to occur abun- 

 dantly. We believe, however, it could be easily controlled by the use 

 of arsenate of lead. 



Sawfly No. 2 



During the month of April, 1908, we found many rather large saw- 

 fly larvffi on the leaves of pecan trees. These also have a very inter- 

 esting method of feeding and quite distinctive from the foregoing 

 species. The larvre feed separately and, for the most part, begin at 

 the top of a leaflet and eat it clean on both sides of the midrib as far 

 as they go. Whenever one of them desists from eating and assumes 

 a resting attitude, it always curls or coils tightly about the naked mid- 

 rib (or petioles), to which it tenaciously clings. Occasionally one 

 begins in the middle of a leaflet and eats out a hole on both sides of 

 the midrib, always, however, lying closely curled about the midvein 

 when at rest. This attitude seems characteristic, although I am not 

 widely familiar with sawfly larvie and their habits. Although we ob- 

 served these larvae carefully during their life history and made de- 

 scriptions of the different stages and molts, yet we make no record of 

 them here because we believe there were two species among the larviB 





