THE COMB-CLAWED BARK BEETLES. 



1283 



base. Elytra slightly wider than thorax, very gradually subacute <>n apical 

 third; disk with deeply impressed rows of rather line, close-set punctures; 

 intervals convex, minutely and rather densely punctate. Length 1<> 12 nun. 



Lake, Kosciusko and Vigo counties; rare. June 8- July 16. Oc- 

 curs usually on bushes and twigs and probably to be found spar- 

 ingly throughout the State. 



VII. ANDROCHIBUS Lee. 1862. (Clr., "a male + hand. ") 



Medium-sized black or brown species, having the legs and an- 

 tenna long and slender; terminal joint of maxillary palpi slender, 

 triangular, its very oblique apex almost as long as the outer side; 

 hind angles of thorax, especially those of female, acute and much 

 prolonged backwards. One of the two recognized species has been 

 taken in the State, while the other may occur. 



KEY TO SPECIES OF ANDROCHIRUS. 



a. Deep black ; femora reddish-brown, the tibiae and tarsi piceous. 



FEMORATUS. 



Off. Grayish-black ; legs pale reddish-yellow throughout. 



2376. ERYTHROPUS. 



A. femorat'us Oliv., length 9-10 mm., is a southern species which 

 lias been recorded from Cincinnati. 



2376 (7631). ANDROCHIRUS ERYTHROPI'S Kirby, Faun. Bor. Amer.. TV, 1S37. 



239. 



Elongate-oval, strongly convex. Color 

 given in key; not shining; pubescence very 

 short and dense. Eyes small, separated by 

 one-half more than their own width. Third 

 autennal joint twice as long as second, three- 

 fifths as long as fourth. Thorax one-half 

 wider than the median length ; sides converg- 

 ing from base to apex ; disk very finely, deep- 

 ly and densely punctate without basal im- 

 pression ; base strongly and broadly Insin- 

 uate. Elytra equal in width to thorax; sides 

 parallel and nearly straight to middle, thence 

 narrowing to a subacnte apex; disk finely 

 and deeply striate. the stria,' finely punctate; 

 intervals convex, minutely and densely punc- 

 tate. Length 9-30 mm. (Fig. 5< ;'..) 



Throughout the State; scarce. May 

 8-July 13. Occurs on stumps and 

 bushes, usually in moist places. A. fuscipes Melsh. is said by Casey 

 to be a synonym of erykhropus. 



Fig. 509. X 4. (Original ) 



