1226 FAMILY LIII. CIIRYSOMELID.E. 



LXXV. CHALEPUS Thiuil). 18'05. (dr.. "difficult.") 



The members of this genus resemble those of the preceding in 

 form, but differ by having all the joints of the antenna 1 distinct, the 

 elytra with the alternate intervals usually costate and the middle 

 tibia 1 straight. Six species have been taken in the State, while an- 

 other probably occurs. They were listed by Henshaw under Odon- 

 tota. 



KEY TO INDIANA SPECIES OF CHAI.EPl'S. 



(i. Elytra with ten rows of punctures. 



1>. Elytra not costate; form narrow, parallel; thorax red. elytra blue. 



COLLARIS. 



lib. Elytra costate. 



<: Elytra with three entire costa- (inly. 

 d. Elytra black, or at most with reddish humeri. 



c. Body beneath black; thorax red with discal dark space; hu- 

 meri of elytra red. 2269. SCAPULARIS. 

 cc. Body beneath red: thorax wholly red; elytra wholly black. 



2270. BICOLOR. 

 (hi. Elytra mostly red. 



/. Elytra with a very narrow black sntural line, which does not 

 reach apex. 2271. HORNII. 



ff. Elytra with a black sutural stripe which broadens gradually 

 from base to apex. 2272. DORSALIS. 



<<. Elytra with three entire costre, and a fourth represented at base 

 and apex between the second and third; color reddish-yellow, 

 with darker spaces on elytra ; length G-0.5 mm. 2273. RUBRA. 

 (id. Elytra with eight rows of punctures ; color reddish with dark mark- 

 ings; length 3.5-4 mm. 2274. NERVOSA. 



C. collaris Say, length 5.5-6 mm., is known from Colorado and 

 Illinois. 



2269 (7075). CHALEPUS SCAPULARIS Oliv., Ent., VI, 1SOS, 7(i(i. 

 Wedge-shaped, robust. Black, feebly shining; a broad stripe each side 



of thorax, humeral angles of elytra, and sometimes the base of femora, dull 

 red. Thorax widest at base, sides subangulate at middle; disk depressed 

 near base, coarsely and deeply punctured. Elytra each with three costa\ 

 the second and third separated by four rows of punctures; apex serrulate. 

 Length 5.5-7 mm. 



Steuben, Starke. Marshall and Vigo counties; scarce. June 15- 

 September 18. Occurs on the hog-peanut, Falcata coinosa L. 



2270 (7077). CHALEPUS BICOLOR Oliv., Encyc. Method,. VII, 1792, 96. 

 Elongate, nearly parallel. Black, subopaque ; thorax, scutellum, under 



surface, and often the base of femora, bright red. Vertex silicate. Thorax- 

 very little wider at base, sides obtusely ungulate; disk very coarsely, dense- 

 ly and' deeply punctured Elytra with sides and apex serrulate; disk punc- 

 tured -ind cost.-ite as in ficdi>nl<iriK, except that the four rows of punctures 



