1208 



FAMILY LIII. CHRYSOMELID/E. 



very small corneal terminal joint; hind tibiae sinuate and deeply 

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

 angular, fourth slender. 



2233 (6919). Blepharida ehois 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— Oc- 

 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. Ch^etocnema Stephens. 1831. (Gr., "spine + tibiae. ") 



Small elongate or oval, black or brown, usually faintly bronzed 

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

 carinate ; antennae 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 11th 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 

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

 grooved at apex on the outer side 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 CIIiETOCNEMA. 



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

 not obliquely truncated. 

 h. Head punctate, sometimes indistinctly so. 



c. Rows of elytral punctures confused or irregular at base. 

 d. Punctures of elytral striae 1 to 8 much confused to beyond the 

 middle. cribata. 

 del. Punctures of elytral stria? 1 to 3 irregular near the base only; 

 punctures of thorax coarse. 



