1048 



FAMILY LII. — CERAMBYCID^. 



XLI. Rhagium, Fab. 1775. (Gr., "to tear.") 

 Anteniiii? short, scarcely reaching the base of elytra ; eyes rather 

 small, oblong, slightly cmarginate; prosternum prominent between 

 the front coxa;. One species occurs throughoixt the northern 



United States. 



lO.'W (n2:'2). Rhagium lineatum Oliv., Ent, I\, 



1795, 69. 



Elongate, rather robust. Black, mottled with 

 brown and grayish pubescence; elytra with red- 

 dish-brown spots. Thorax cylindrical, much nar- 

 rower than elytra, armed each side with an acute 

 tubercle. Elytra feebly narrowed from base to apex, 

 each with tliree smooth, rather strongly elevated 

 lines; intervals coarsely and sparsely punctate. 

 r.ength i;:!-1S mm. (Fig. 445.) 



Laporte County; scarce. June 11. Oc- 

 ciu's l)cneath the bark of pine and in lumber 

 yards. 



Fig. 445. (After Marx in Fifth 

 Rep. U. S. Ent. Comm.) 



XLII. Centrodera Lec. ISfiD. (6r., "spine + neck.") 



Eyes large, globose and prominent; antenna^ slender, as loni;- as 

 body, male; one-third shorter, female; second .joint very small, 

 fourth intermediate in size between the third and fifth ; body elon- 

 gate, sides nearly parallel. One species has been taken in the State, 

 and two others mav occur. 



KEY TO INDIANA SPECIES OF CENTEODEEA. 



a. Tubercles on sides of thorax acute. 



&. Elytra uniform reddish-brown, truncate at tips. 1937. decolobata. 

 6&. Elytra clay-yellow with irregular brown striiies and blotches, the 

 tips rounded and slightly separated. picta. 



aa. Tubercles of thorax obtuse; pubescence of elytra arranged in lines. 



SUBUNEATA. 



1937 ((!2.'!:'.). Centkodera decoi.oeata ITarr., In.iur. Ins., 

 l'^41, ur,. 



Very elongate, subcyllndrical, somewhat tiatteucd 

 above. Reddish-brown, sparsely jiubescent. Thorax cyl- 

 indrical, constricted and much narrowed before the tu- 

 bercle, the disk with a wide but shallow median groove. 

 Elytra at base about twice as wide as thorax, feeiily nar- 

 rowed to apex, coarsely and somewhat eonfluently punc- 

 tured on basal half, more finely towards apex. Length 

 27 mm. (Fig. 44(;.) 



Kosciusko County; rare. June 1. Occurs on 

 beech and maple. 



Fig. 446. X U- 

 (Alter Wickham.) 



