1012 



FAMILY LII. — CERAMBYCID.T5. 



larly punctiirod. All the joints of Iiiud tarsi donselj^ pubescent beueiitb, 

 with a smooth luotliau channel. length 22-47 nun. (Fig. 424.) 



Southern half of State; scarce. June 20 -August 7. The fe- 

 males are always much larger than the males. The beetle is known 

 as the "Brond-neckcd Prionus" and the larvi'^ tu'c said to injure the 

 grape, apple, poplar and pine by boring into the roots. 



1877 (59G0). Prionus pocularis Dalm., Schoenh. Syst. Ins., I, 1817, 148. 

 More slender and parallel and with antennae more slender than in latl- 



coUis. Dark reddish-brown, shining. Thorax narrower than base of ely- 

 tra, the teeth never reflexed. Elytra with sides straight, almost parallel ; 

 surface more sparsely and much less roughly sculptured than in htticoIJis. 

 Length 2.5^5 mm. 



Lake County ; rare. June 20. Said to occur in the ^liddle and 

 Southern States. 



1878 (.5962). Prionus iMr.EicoRNis Linn.. Syst. Nat., XII, 1780, G22. 



Broad, stout. Dark reddish-brown, 



shining. Antenme 18-20-jointed, male; 

 ir)-18-jointed. female ; the joints of male 

 conical, each one hollowed to receive 

 the next and with the lower edge pro- 

 longed ; those of female more slender 

 and simply serrate. Thorax very short 

 and broad, the hind tooth indistinct. 

 Elytra of female more convex than 

 male; surface roughly and rather dense- 

 ly sculptured. Length 22-47 mm. (Fig. 

 42.5. ) 



Knox and Crawford counties ; 

 scarce. July 4-July 9. Known as 

 the "Tile-horned Prionus" on ac- 

 count of the joints of antennte overlapping like the tile of a roof. 

 The larvcC infest the roots of the grape and pear and also feed upon 

 the roots of herbaceous plants. A member of the Austroriparian 

 fauna. 



Fig. 425. Male. Natural size. 

 (After Forbes.) 



III. Sphenostethus Hald. 1845. (Gr., "wedge + breast.") 



Head small, much narrower than tliorjix; the latter largei'. 

 trapezoidal, smooth ; prosternum deeply ema ruinate l)ehind for the 

 reception of the mesosternum. 



1879 (.5968). Sphenostetiius taslei Buq., Ann. Fr., 1841, 39. 



Elongate, tai)ering boliind. P.lack, feebly shining; elytra often more oi' 

 less reddish-brown. Antenna' slender, aldiut onc-lialf length (tf body, slightly 

 com])ressed and serrate. Thorax narrower at apex, subconvex. obtusely 

 toothed near base, surface finely and sparsely punctate. Elytra tapering, 

 separated near apex, tips finely serrate; surface finely and rather sparsely 

 punctate. Length 27-29 mm. 



