1208 FAMILY LIII. CIIRYSOMELIDJE. 



very small conical terminal joint ; hind tibiio sinuate and deeply 

 grooved on outer edge near apex ; tarsi stout, first joint broadly tri- 

 angular, fourth slender. 



2233 (6919). BLEPHAKIDA RHOIS Forst., Nov. Spec., Ins., 1771, 21. 



Short, robust, oval, convex. Under surface and legs 

 reddish-brown ; above dull yellow, the elytra paler, irregu- 

 larly variegated with dark reddish-brown ; antennae piceous. 

 the four basal joints paler. Thorax more than twice as wide 

 as long, narrowed in front, sides regularly curved, front an- 

 gles prominent, hind ones obtuse ; disk sparsely and finely 

 punctured and with a row of coarser punctures around the 

 margins. Elytra scarcely wider at base than thorax, each 



with nine feebly impressed rows of coarse, deep, distant punctures. Length 



5-6.5 mm. (Fig. 532.) 



Throughout the State; rather common on sumac. May 19-O- 

 tober 1. The elytra vary greatly in the proportion of reddish- 

 brown markings, these sometimes covering the entire surface except 

 the sides and apex. Known as the "jumping sumac beetle." 



LXIV. CBL-ETOCNEMA Stephens. 1831. (Gr., "spine + tibiae.") 



Small elongate or oval, black or brown, usually faintly bronze 1 

 species having the head immersed in thorax to eyes, the front not 

 carinate; antennas slender, at least half the length of body, second 

 joint elongate-oval, 3 to 6 slender and longer, 7 to 11 gradually 

 broader and flattened, the llth nearly as long as the two preceding, 

 acute at tip ; thorax always broader than long, narrowed in front, 

 base regularly curved, without an impression in front; elytra at 

 most but little wider than thorax, their punctures in rows; hind 

 tibia3 sinuate near apex, with a triangular tooth above the curve, 

 grooved at apex on the outer sids. and terminating in a rather long, 

 stout spur; tarsal claws simple The following species have been 

 taken or probably occur in the State : 



KEY TO INDIANA SPECIES OF CHJiTOCNEMA. 



(/. Sides of thorax regularly curved from base to apex, the front angles 



not obliquely truncated. 

 It. Head punctate, sometimes indistinctly so. 



c. Kous of elytral punctures cmil'iised or invgular :il base. 



<l. Punctures of elytral stria 1 1 to S much confused to beyond the 

 middle. CRIBATA. 



<l<l. Punctures of elytral stri.-e 1 to 3 irregular near the base only; 

 punctures of thorax nurse. 



