Eighth Report of tu tomolooist. 



I?.") 



differeiil years. They arc either the k * white-grub " of the common May 

 <»r .June beetle Lachnosterna fusca, or a nearly allied 

 species. There are a number of \\ irabceida 



which so closely resemble L. fuSCCt that the beetles can 



be with difficulty separated, ami indeed we do not 

 know, or do writers agree, which should be recognized 



as species or regarded merely as varieties. Dr. Horn, in 

 his " Revision of the Species of Lachnosterna of North 

 America,"* has referred twenty-one species to the L.fusca Vu . ^ 

 isrroup, while more recently Prof essor J. B.Smith has J^ite «?m1» J? 



O I v J_jA CH.NOSTh.RN A 



found structural features in six forms previously ,fraCA CFrSM."). 

 confounded with L. fusca^ and has named them as species 



The little that is known of the larvae of these beetles renders it 

 absolutely impossible to separate and determine them. After enumer- 

 ating and characterizing ninety-one species of American Lachnosterna, 

 Professor Smith makes regretfully this confession: "As it stands at 

 present, we do not know, positively, the larva of a single specie of 

 Lachnosterna "I 



The habits of these " white-grubs " of the fusca and nearly allied 

 groups, may be presumed to be very much alike — all feeding on the 

 roots or grasses, various plants and shrubs, or other vegetation. 



Although the examples sent can not be positively named, yet if there 

 is anything connected with their finding that renders it particularly 

 desirable to know more of them, they will be given further study for 

 approximate determination. 



Cyllene pictus (Drury). 



The Hickory Borer. 



Some insects taken from burrows in dry hickory wood were received 

 early in March, from New Market, New Jersey, with inquiries of them. 



They were recognized as the pupae of the hickory borer, Cyllene 

 pictus, formerly known and appear- 

 ing in many of our entomological 

 writings, as Clytus pictus. This species 

 was confounded with the locust borer, 

 Cyllene robinicB (Foerst.), for a long 

 time, and until it was separated from it 

 by distinctive characters by Mr. Walsh, Fi&. 28.-The hickory-tree borer, Cyllboti 

 ..„.;) rni j. -, r ,1 pictus; a, larva; b, pupa. 



in 1864.§ The females of the two 



species can be distinguished only with difficulty, but the male of C. pictus 



can be readily known by its antennae longer than the body, and quite 



* Transactions of the American Entomological Society, iv, 18S7, pp. 209-290, Plate 3. 

 t Notes on the Species of Lachnosterna of Temperate North America: Proc. U. S. National. 

 Museum, xi, 1889, p. 503. 

 % Id., ib., p. 523. 

 § Proceedings of the American Entomological Society, in, 1864, pp. 420-422. 



