796 



FAMILY XXXIX. — BHPRESTID.E. 



d. Body elongate; prostenuim pointed behind. XIV. Tapiikocerus. 



(Id. Body broad, ovate; prosfeniinn (»l)tnse behind. XV. Brachys. 



cc. .Seutellum hirge; body triangular; pmsternnm A'ery broad, almost 



truncate behind; tibial dilated. XVI. Pachyscelus. 



Eiipristoccriis cogifans Weber, liend and thorax obscure supre- 

 ous, elytra black, with crossbars of grayish hairs, length 8-9 mm., is 

 known from the "Alicldle, Southern aiul Western States." 



XITI. Agrilus Steph. 1880. (Gr., "field.") 



Small, slender, elongate forms, having the prosternum pointed 

 behind; the seutellum transverse and acuminate. The larvre live in 

 slender stems and twigs of shrulis and trees, and often do much 

 damage, especially to blackberry and raspberry canes. The genus 

 has been monographed by 



Horn. — "The species of Agrilus of Boreal America," in Trans. 

 Amer. Ent. Soc, XVIII, 1891, 277-336, Fl. VIII. 



In this paper Horn recognizes 54 species, 18 of which have been 

 taken in Indiana, while several others doubtless occur. On account 

 of the large number of species the Indiana members of the genus 

 are classed in three groups. 



Fig. 307. 1, Antenna of Agrilus efienus; 2, of .4, imbellk; 3, of A. obsolctoijuHatus; 4, of .4. ruficJi,!t 

 claw.s of .4. rulicollk: 6. claws of A. bUineaius, a, male; b, female; 7, claws of .4 kcontei, 

 a, male; b, female. (After Horn.) 



tarsal 



KEY' TO GROUPS OF TNIIIANA AGRILUS. 



(I. AntennjTe serrate, beginning at the fourth joint. (Fig. 307, Nos. 3 and 4.) 



h. Tarsal claws cleft in such a manner that the lower portion is turned 



inward, nearly or quite touching that of the opposite side. (Fig. 307. 



No. 5.) Group A. 



hi). Tarsal claws simplj^ cleft, or almost bifid, the lower portions not 



turned inward. (Fig. 307, Nos. 6 and 7.) Group B. 



(III. Antenna? serrate, beginning at the fifth joint. (Fig. 307, Nos. 1 and 2.) 



Group C. 

 Group A. 



Wlieiu'ver the fourth joint of antenna? resembles the fifth more 

 than it does the third (Fig. 307, Nos. 3 and 4). the species comes 



