U.S. D. A., B. E. Bul. 97, Part V. D. F. I. I., November 6, 1911. 
PAPERS ON DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 
NOTES ON THE PEACH AND PLUM SLUG. 
(Caliroa [| Eriocampoides] amygdalina Rohwer.) 
By R. A. CusHMan, 
Agent and Expert. 
INTRODUCTION. 
On August 7, 1909, the writer’s attention was attracted by a 
peculiar injury to the leaves of a peach tree standing in the yard of 
the Delta Boll Weevil Laboratory at Tallulah, Madison Parish, La. 
(See Pl. XI.) This injury consisted in the skeletonizing, with subse- 
quent curling and falling, of the leaves by a small, yellowish-white, 
sluglike larva, resembling very closely in form the pear slug (/rio- 
campoides limacina Retz.). Investigation showed that most of the 
peach trees in the neighborhood were more or less severely injured. 
On August 16 an abundance of small black sawflies was observed 
alighting on a variety of trees and shrubs, and it was immediately 
thought that these were the adults of the sluglike larvee on the peach 
trees. From the close resemblance of both the larve and the adults 
to those of the pear slug it was at first supposed that the insect in 
- question must be of that species, but comparison of the adults with 
the description of the pear slug showed differences. Specimens of 
the adults were therefore sent to Mr. 8. A. Rohwer of the Bureau of 
Entomology, who stated that they belonged to a species new to 
science. Mr. Rohwer has described the species as Caliroa (Erio- 
campoides) amygdalina.* 
What is undoubtedly the same species was discussed and figured by 
Prof. H. A. Morgan, in 1897,’ under the name Caliroa (Selandria) 
obsoletum, and the common name ‘‘ peach and plum leaf sawfly.”’ His 
article covers a little more than 3 pages, and embraces notes on 
the biology and natural enemies of the species and remedial measures. 
1 Entomological News, vol. 22, no. 6, pp. 263-265, figs. 1-6, June, 1911. 
2 Report of the Entomologist, Bul. 48, 2d ser., La. Agr. Exp. Sta., pp. 142-145, 1897. 
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