THE PEACH AND PLUM SLUG. 101 



The latter species was not reared by the writer, but on October 5 

 8 eggs, from which this parasite had probably emerged, were found. 

 Emergence is through a small round hole a little to one side of the 

 center of the egg. 



In addition to the above enemies several specimens of a new 

 species of ichneumon fly were reared from the larvae at Tallulah. This 

 species has been described by Mr. H. L. Viereck, of the Bureau of 

 Entomology, as HyperaUus calirose. 1 It is shown, much enlarged, in 

 figure 25. 



Specimens of this parasite were reared from larvse which had been 

 confined in the rearing cages for varying periods before entering the 

 ground. The youngest larva, from which a parasite was reared, was 

 removed from the tree on April 7, when it was about one-third grown, 

 that is, 3 or 4 days from the egg. The parasite emerged 35 days later, 

 on May 12. This period is, how- 

 ever, rather longer than the aver- V^ ^^X 

 age, since this individual was de- *^N\ ^s£T*°/J^^ 

 veloping during the cold weather ^^w^ \ %jS9J ^^#pp^'- 

 of April and May. All of the W^^i^^M^^MBt^^S^^^^f/ 

 other specimens were reared from ^<^~>2^^7P P^llffil?® 

 larvae which were nearly full t \^nlK^ ^" > ^ x 

 grown at the time they were re- iTrtm^^ 

 moved from the tree and placed J\ f |V 1 \w 

 in cages. From larva? placed in " \ W J 

 a cage on April 16, 2 parasites P \ 

 were reared on May 17, a period ' * 



of 31 days. Fig. 25. — Hyperallus calirose, a parasite of the peach 



t? 1 1 i • and plum slug. Much enlarged. (Original.) 



from larvae placed m a cage on ^ 



July 12,2 parasites were reared on August 10, a period of 29 days. An 

 adult of the host emerged on July 26, 15 days before the parasites 

 appeared. 



From larvae taken on August 10, two parasites were reared on 

 September 1, a period of 22 days. Three adult sawflies emerged on 

 August 19, 13 days before the parasites. 



From larvae confined in a cage on August 12, one parasite was 

 reared on September 3 (period, 22 days), one on September 4 (period, 

 23 days), and one on September 7 (period, 26 days). Adult saw- 

 flies were reared from this lot on August 20, 22, and 23, an average 

 of 12.5 days before the first parasite, 13.5 days before the second, 

 and 16.5 days before the last parasite. 



From larvae removed from the tree on August 19, two parasites 

 were reared on September 18, a period of 30 days. The only adult 

 sawfly reared from this lot was one which evidently remained over 

 time as a prepupa and emerged September 16, only two days ahead 

 of the parasite. 



1 Proc. U. S. Nat. Mus., vol. 40, p. 189, 1911. 



