1012 



FAMILY LII. CEEAMBYCIDiE. 



larly punctured. All the joints of liind tursi densely pubescent beneath, 

 with a smooth median channel. Length 22-47 mm. (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 "Broad-necked Prionus" and the larvpj are said to injure the 

 grape, apple, poplar and pine l)y boring in1o the roots. 



1877 (5960). Pkionus pocui^eis Dalm., Schoenh. Syst. Ins., I, 1817, 148. 



More slender and parallel and with antennas more slender than in luti- 

 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 hiticulUs. 

 Length 25-45 mm. 



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

 Southern States. 



1S78 (5962). Prioni's imbeicoenis Linn., Syst. Nat, XII, 1780, 622. 



Broad, stout. Dark reddish-brown, 

 shining. Antennte 18-20-jointed, male; 

 16-lS-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 tocith indistinct. 

 Elytra of female more convex than 

 male ; surface roughly and rather dense- 

 ly sculptured. Length 22^7 mm. (Fig. 

 i25.) 



Knox and Crawford counties; 

 .scarce. July 4-July 9. Known as 

 the "Tile-horued Prionus" on ac- 

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

 The larvfe 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. Sphbnostetiius Hald. 184.-). (Gr., "wedge + lircast.") 

 Head small, nuicli narrower than thorax; the latter largtT, 

 trapezoidal, smooth; prosternum deeply emarduate behind for "the 

 reception of the mesosternum. w^ 



187!) (5068). SciiENosTETiu-s TA.si.Ei Buq.. Ann. Fr 1,S41 'l') 



Elongate, tapering behind. Bla,.K, feebly shining : elytra often more or 

 less reddish-brown, .\ntennm slender, about one-half length of b,xlv sli^htlv 

 compressed and serrate. Th.u^ax na.Tower at apex, subcnvex,' obtusei; 

 toothed near base, surfa,v finely and sparsely punctate. Klvlra taperin-^ 

 separated near apex, tips finely serrate; surface finely and rather si arseh^ 

 punctate. Length 27-20 mm. -l>aisci,\ 



