1292 FAMILY LVIII. MEL 



VI. EUSTROPHUS 111. 1807. (Gr., "well + twisted.") 



Black or brown, oval, strongly convex species, separated from 

 those of allied genera only by the characters above given. Six spe- 

 cies are recognized, three of which have been taken in the State, 

 while two others may occur. 



KEY TO INDIANA SPECIFS OF EUSTROPHUS. 



(i. Eyes narrowly separated, sometimes almost contiguous on the front. 

 It. Middle and bind tibia.' with distinct transverse ridges on their outer 



edge; under surface and legs reddish-brown. 



c. Form distinctly narrowed behind the middle; thorax wholly black. 



2387. BICOLOR. 



cc. Form much less narrowed behind the middle; thorax with a brown 



marginal baud on sides and front. r.iu N.XEIMARGINATUS. 



bl>. Middle and hind tibia,' without transverse ridges; under surface and 



legs piceous. 2388. REPANDUS. 



ua. Eyes widely separated on the front; form very little narrowed behind 



the middle. 



(L Piceous black; thorax beneath shining, closely but imt roughly punc- 

 tured. CONFIN1S. 

 <hl. Brown; thorax beneath densely and roughly granulate-punctate. 



2389. TOMENTosrs. 



*2387 (7070). EUSTROPHUS BICOLOR Fab.. Ent. Syst.. I, 1798, 497. 



Oval, convex, distinctly narrowed behind. Black, shining, sparsely pu- 

 bescent; abdomen and legs reddish-brown; antenna? black, four basal joints 

 reddish, terminal joint wholly reddish-yellow. Thorax finely and closely 

 punctured, the basal impressions vague. Elytra with rows of feebly im- 

 pressed, rather coarse punctures which become tiner towards apex; inter- 

 vals flat, closely punctate. Length 5-0 mm. 



Throughout the State; common. January 19-September 20. 

 Occurs beneath bark, especially that of fungus-covered logs. In two 

 specimens from Tippecanoe County the under side of abdomen and 

 femora are wholly black, but otherwise I can note no differences of 

 importance. 



E. brunneitnarginatus Dury, black, head rufous, thorax and ely- 

 tra each margined with brown, length 8.7-4.8 mm., was described 

 from near Cincinnati. 



238S (10,710). EUSTROPHUS REPANDUS Horn, Trans. Amer. Ent. Soc.. XV. 

 1888, 33. 



Differs from hirnlur by characters given in key. The antenna are 

 darker, with only the apical half of terminal joint pale. Punctures of ely- 

 tral rows much finer on apical third. Length 0-7 mm. 



Throughout the State; common. March 26-N'ovembe.r 17. Oc- 

 curs with the preceding, more commonly on fungi, and like it prob- 

 ably hibernates as imago. 



E. confims Lee., length 6 mm., is known from Canada, Wisconsin 

 and Nebraska. 



