(»-'>(> l•'\.\ll^^ \.\\i. - xiriDrMD.i;. 



KEY TO INDIANA GENERA OF RRACHYPTERINI. 



(/. Tiirsiil claws distinctly toothed at base. 1. Bkachvpterus. 



(/(/. Tarsal claws sinii)lG or very nearly so. II. Cercus. 



I. Brachvptekis Kuo-. 1704. (Gr.. "short + wing.") 



Tliis <iciii!s is i'('i)f( sciitcd ill tlie eastern United States and Indi- 

 ana Ity one specie-;, -wliicli was pi'oliably iiitrodneed from Europe. 



1207 (;^t;(;i ). I'.iiAcnveiKKi s rinic.K Fab., Ent. Syst.. I, 1798, 23r». 



Oval, convex. Piceuus with a tinge of bronze, shining and very sparse- 

 ly pubescent; antennae and legs reddish-brown. Thorax nearly twice as 

 wide as long, convex, coarsely and rather densely punctured ; sides cuiwed 

 and feebly sinuate near base. Elytra a little more coarsely but less densely 

 l)uncture(l tliau tliorax. truncate at apex. Length 2 mm. 



Steuben, xMarshall aii(] Wayne counties; scarce. May 25-July 

 If). Occurs usually un Howers ol nettle, whence the specific name; 

 also sifted from spha.unum moss. 



II. Cerci:s Latr. 17!)(i. (Gf., "tail of a beast.") 



Two species represent this genus in the eastern United States, 

 both of Avliich oecur in Indiana. 



1208 (30<t4). Ckrcus ahdominalks Erichs.. ({erm. Zeits., IV, 1843, 220. 

 Oval, convex. Metallic blue or greeiiish, shining; legs and abdomen 



red ; antennoa reddish-brown, the club piceous, thre<^-,iointed. Thorax con- 

 vex, one-third wider than long, rather coarsely and evenly, but not densely 

 punctate; base a little wider than apex, hind angles rectangular. Elytra, 

 together, a little longer than wide, rather more coarsely punctured than the 

 thorax. Length 2-2.5 mm. 



Throughout the State; frequent. April 11-July 6. Occurs on 

 Howers of blood root {Sanguinaria) in early spring and later on 

 foliage of various shrubs and trees, especially those ii low ground. 



1209 (3665). Cercus pennatus Murr., Trans. Linn. Soc, XXIV, 235. 

 Oval, subconvex. Light brownish-yellow to piceous, feebly shining. 



si)arsely pubescent. Antennal club two-.jointed. Thorax nearly twice as 

 wide as long, apex feebly emarginate. sides regularly curved and hind an- 

 gles obtuse in male; sinuate behind and hind angles distinct In female; disk 

 convex, rather densely iiunctate. Elytra, together, longer than wide, apex 

 rounded-truncate, surface rather coarsely but not densely punctate. Length 

 2.3 nun. 



Steuben. Whitley, I\Ia.rion and .Jackson counties; scarce. June 

 19-July 10. Occurs on flowers of elder and wild hydrangea. 



