126 SECOND REPORT OF THE STATE ENTOMOLOGIST. 



Amphicerus bicaudatiis. Shimer: iu Trans. Amer. Ent. Soc, ii, 1869, pp. viii, ix 



(iu grape vines). 

 Amphicerus {Bostrichus) hicaudatus. Glover: iu Rept. Commis. Agr. for 1872, p 



118, fig. 8. 

 Bostrichus {Amphicerus) hicaudatus. Riley: 4fli Rept. Ins. Mo., 1872, pp. 51-53, 



figs. 2-1, 25 (appear., habits, etc.) ; 5tla Rept. do., 1873, p. 54 (occur, in 



N. J. and Md., and larval food-plant). 

 Bostrichus {Amphicerus) hicaudatus. Thomas: Ctli Rept. Ins. 111. [1877J, p. 123 



(descr. of beetle). 

 Bostrichus hicaudatus. Osborn: in Trans. Iowa St. Horticul. Soc. for 1879, p. 94, 



1880 (brief notice). 

 Amphicerus hicaudatus. Riley: in Amer. Entomol., iii, 1880, p. 51, figs. 11, 12- 

 Amphicerus hicaudatus. Saunders: Ins. Inj. Fruit, 1883, pp. 33-35, figs. 21, 22 



(general notice). 



This little, and sometimes quite destructive beetle, has long been 

 known in our Western States, especially in Michigan and Illinois, from 

 its more frequent occurrence there, but has not, until recently, been 

 found in the State of New York. It extends southward, at least, into 

 North Carolina, and in the south-west into Texas. 



It is a small, cylindrical, dark chestnut brown beetle, black beneath 

 from one-fourth to three-tenths of an inch long, with a small depressed 

 head, its thorax quite elevated and spinose, and extended 

 in front in two little horns- The wing-covers are also 

 rough, granulated, and in the male they terminate in 

 two short horns, as shown at h in the accompanying 

 tni-''bo^e7^A5iPHicE- outline figures, from which feature it derived its specific 

 fe°mr;T-theUa,f ° name, meaning two-f ailed. 



The original description by Mr. Say is quite brief, as follows : 

 A. bicaiidttfiiK. Dark reddish-brown; thorax asperous and bicornate 

 before ; a prominent obtuse spine near the tip of the elytra. 



Vegetation Attacked. 



The insect, as appears from its common name above given, usually 

 attacks the twigs of apple-trees. It is, however, known to occur upon 

 the pear and cherry-tree under like conditions, and has also been found 

 within grapevines, doing far more harm to them than to fruit-trees, if 

 the statement made to the Department of Agriculture and quoted by 

 Mr. Glover {loc. cit. sup.), can be relied upon, viz.: "In Iowa, 

 seven to nine-year-old vines are killed from the root up by these insects, 

 and out of fourteen vines eleven were killed " (they were identified by 

 Mr. Glover as A. hicaudatus from examples within the vines). 



The statement was also made to the Department, that the same beetle 

 had done much damage in Kansas by boring into twigs of young 

 hickory. 



