1226 FAMILY LIII. — CI-IRYSOMELIDiE. 



LXXV. Chalepus Thunb. 1805. (Gr., "difficult.") 



The members of this gen-as i-esemble those of the preceding in 

 form, but differ by having all the joints of the antennas distinct, the 

 elytra with the alternate intervals usually costate and the middle 

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

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

 tota. 



KEY TO INDIANA SPECIES OF CHALEPUS. 



a. Elytra with ten rows of punctures. 



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



COLLAEIS. 



hi). Elytra costate. 



c. Elytra with three entire cost« only. 

 '/. Elytra black, or at most with reddish humeri. 



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

 meri of elytra red. 2269. scapitlakis. 

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



2270. BICOLOR. 



(Id. Elytra mostly red. 



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

 reach apex. 2271. hoknii. 



ff. Elytra with a black sutural stripe which broadens gradually 

 from base to apex. 2272. doesaus. 



cr. Elytra with three entire costaj, and a fourth represented at base 

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

 with darker spaces on elytra ; length 6-6.5 mm. 2273. kubka. 

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

 ings; length 3.5-i mm. 2274. neevosa. 



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

 Illinois. 



2269 (7075). Chalepi's scapdlaeis Oliv., Ent, VI, ISOS, 766. 

 Wedge-shaped, robust. Black, feebly shining ; a broad sti-ipe 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 costr, 

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

 Length 5.5-7 mm. 



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

 September 18. Occurs on the hog-poanut, Falcata comosa L. 



2270 (7077). Citai,ki-us eicolor Oliv., Encyc. Jlethod., VII, 1702, 96. 

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



surface, and often the I)ase of femora, bright red. Vertex sulrate. Thorax 

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

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

 tured and costate as in .-irdpvlnris, except that the (our rows of punctures 



