1292 



FAMILY LVIIL — AIELAXDRYID.E. 



VI. Bustrophus 111, 1S07. (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 SPECIF S OF EUSTEOPHUS. 



a. Eyes narrowly separated, sometimes almost contiguous on the front. 

 I). Middle and hind tibiae with distinct transverse ridges on their outer 

 edge ; under surface and legs reddish-brown. 

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



23S7. bicoloe. 



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

 marginal band on sides and front. beunneimakgiNatus. 

 blj. Middle and hind tibiae without transverse ridges; under surface and 

 legs pieeous. 23SS. eepaxdus. 



aa. Eyes widely separated on the front : form very little narrowed behind 

 the middle. 



d. Piceous black : thorax beneath shining, closely but not roughly punc- 

 tured 



COXFIXIS. 



dd. Brown: thorax beneath densely and roughly granulate-punctate. 



23S9. TOMENTOSUS. 



*2387 ( 7679). Eusteophes bicoloe 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 finer towards apex; inter- 

 vals fiat, closely punctate. Length 5-6 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. brunneimarginatus Dury. black, head rufous, thorax and ely- 

 tra each margined with brown, length 3.7-4.8 mm., was described 

 from near Cincinnati. 



23SS il0.710i. Eusteophus bepandus Horn. Trans. Amer. Ent. Soc. XV. 

 1S8S, 33. 



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

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

 tral rows much finer on apical third. Length 6-7 mm. 



Throughout the State: common. March 26-Xovember 17. Oc- 

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

 ably hibernates as imago. 



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

 and Nebraska. 



