Report of the State Entomologist. 197 



A New (?) Aphis on Hop Koots. (Country Gentleman, for May 19, 

 1887, lii, p. 401, c. 3-4 — 45 cm.) 



Aphides received from Waterville, N. Y., are sent as probably the 

 hop-louse. Importance of ascertaining the hibernation of Phorodon 

 hnniuli, which is believed to be on plum trees. Our limited knowledge 

 of the root-feeding Bhizobiince. Description of the mature and young 

 aphis from hop hills in Waterville. 



The Currant-worm Parasite. (Albany Express, for May 23, 1887, 

 xli, p. 2, c. 5 — 10 cm.) 



The attacli of the egg-parasite [Trichogramma pretiosa] on the eggs 

 of the currant saw-fly — not hitherto recorded out of the State of New 

 York, is discovered in some of the eggs received from a fruit farm in 

 Galena, 111. In picking off for destruction the egg-bearing leaves of 

 currant bushes, those on which the eggs have turned black, indicate 

 parasitization, and therefore should not be crushed, but preserved for 

 the development of the parasite. 



The Leather Beetle. (Boots and Shoes Weekly, for May 25, 1887, 

 xi, p. 473, c. 1-2 — 36 cm.) 



To inquiry received from Scott Co., Ky., of an insect that burrows in 

 shoes and perforates them in all directions (no examples sent), reply is 

 made that it is probably Dermestes vulpinus, or " the leather beetle," 

 which has seriously injured boots and shoes in some wholesale houses 

 in St. Louis, Mo., and elsewhere. Its operations are described and 

 remedies given. Another beetle occasionally injuring boots and shoes 

 is Sitodrepa panicea. [See pages 88-93 of this Report.] 



A Saw-fly on Apple-trees. (Country Gentleman, for May 26, 1887, lii, 

 p. 421, c. 3 — 21 cm.) 



Insects occurring in large numbers on apple-trees in Chester county, 

 Pa., and thought to be the occasion of the blighting of the trees, are 

 Bolerus sericeus (Say). They could not have caused the injury reported. 

 Dolerus arvensis (Say) has been sent from Ohio as having injured the 

 fruit-buds of pear-trees, but it is not credited, for none of the Tenth- 

 ridinoB are known to feed injuriously on vegetation in their perfect 

 stage. Reference is made to food-plants of the larva of I). arvensiH. 



Elm-leaf Beetle Going Northward. (Country Gentleman, for May 26, 

 1887, lii. p. 421, c. 3-4 — 20 cm.) 



Galeruca xanthomelcena (Schr.) received from Poughkeepsie, N. Y. — 

 the most northern locality in the State from which it has been reported. 

 Its progress, since its introduction flfty years ago, is sketched. Import- 

 ance of efforts to arrest its spread. Reference to literature upon the 

 insect. 



A New Cotton Pest. (Country Gentleman, for June 2, 1887, lii. p. 

 441, c. 4 — 19 cm.) 



A small beetle reported from Jackson county, Ga., as destroying 

 young cotton plants where ragweed had grown the preceding year, is 



