THE SHORT- WINGED SCAVENGER. BEETLES. 



477 



Tevales cribaiulus Casey, 2.7 mm. in length and pale uniform 

 brownish-yellow throughout, was described from Pennsylvania. 



LXXX. Acidota Steph. 1831. (Or., " sharp.") 



Small elongate, subconvex species having the fourth joint of 

 maxillary palpi scarcely longer than third ; mandibles without 

 teeth; elytra reaching middle of abdomen, their outer apical angle 

 rounded.' One species has been taken in the State, while another 

 may occur. 



KEY TO INDIANA SPECIES OF ACIDOTA. 



a. Elytral punctures coarse, arranged in regular rows; length 6-7 mm. 



CRENATA. 



aa Elytral punctures finer, more or less irregularly placed; length 4.5- 



5 mm 020. SUBCARINATA. 



A. crenata Fab., piceous or dark chestnut-brown, antennae and 

 legs paler, occurs in Canada and at Detroit, and probably in the 

 northern counties of Indiana. 



020 (2806). Acidota subcarinata Erichs., Gen. Spec. Staph., 1840, 863. 



Elongate, subdepressed. Dark reddish or chestnut brown, shining; 

 head, thorax and dorsal segments of abdomen often more or less fuscous. 

 Thorax subquadrate, a little broader than long; sides feebly curved, de- 

 pressed near hind angles, which are obtuse; disk rather coarsely, deeply 

 and sparsely punctate. Elytra at base scarcely wider than thorax, the 

 punctures fine, deep and arranged in irregular double rows with fine raised 

 lines between. Abdomen as wide as elytra, finely and sparsely punctate. 

 Length 4.5-5 mm. 



Martin and Posey counties; rare. April 21-May 6. Beaten 

 from apple blossoms. 



LXXXI. Arpedium Erichs. 1838. (Gr., "flat") 



Oblong, subdepressed brownish or piceous species having the 

 antenna filiform, longer than head and thorax; right mandible 

 toothed at middle; elytra reaching usually to or beyond middle of 

 abdomen. Two species have been taken in the State and two others 

 may occur. 



KEY TO INDIANA SPECIES OF ARPEDIUM. 



a. Thorax and elytra distinctly punctate. 



ft. Winged species ; elytra long, not obliquely truncate at tips. 

 c. Disk of thorax even, densely and rather finely punctate. 



021. cribatum. 



cc. Disk of thorax uneven, widely and deeply impressed each side. 



022. SCHWARZII. 



