79fi 



FAMILY XXXIX. BLIPRESTID.E. 



d. Body elongate ; prosternum pointed behind. XIV. TAPHROCEEUS. 



(hi. Body broad, ovate; prostemum obtuse behind. XV. BHACIIVS. 



cc. Seutellum large; body triangular; prosternum very broad, almost 



truncate behind ; tibiae dilated: XVI. PACHYSCELUS. 



Eupristocerus coy if an* Weber, head and thorax obscure supre- 

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

 known from the "Middle, Southern and Western States." 



XIII. AGRTLUS Steph. 18)50. (Gr., "field.") 



Small, slender, elongate forms, having the prosternum pointed 

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

 slender stems and twigs of shrubs 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, PI. 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. /, Antenna of Agrilus egenus; 2, of ,4, imlii-llix; i,<t! ,!. iilmnli'tun uttalus; 4, of .4. rujicJLs; .5, tar.-ul 



claws of .4. ruftcollis; 6, claws of A. bilineatus, a, male; 6, female; 7, claws of .4 Itrunlri, 



a, male; 6, female. (Alter Horn.) 



KEY TO GROUPS OF INDIANA AGRILUS. 



(i. Antenme serrate, beginning at the fourHt joint. (Fig. 307, Nos. 3 and 4.) 



It. 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. 



lilt. Tarsal claws simply cleft, or almost bifid, the lower portions not 



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



nn. Antennae serrate, beginning at the flfth joint. (Fig. 307, Nos. 1 and 2.) 



Group C. 

 GROUP A. 



Whenever the fourth joint of antenna? resembles the fifth more 

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



