698 



FAMILY XXXVI. 



RHTPICER1D.K 



II. Sandalus Knoch. 1801. (Gr., "slipper or sandal.") 



Mandibles large, stout, prominent and toothed on the inner 

 side near base; antenna} but little longer than head; metasternum 

 short, with wide side pieces and large epimera. Four species are 

 known, two from Indiana. 



KEY TO INDIANA SPECIES OF SANDALUS. 



a. Thorax obtusely subangulate behind the middle ; elytra but little wider 

 than thorax. 1325. peteophyus. 



aa. Thorax regularly conical ; elytra distinctly wider than thorax. 



1325 (4021). Sandalus peteophyus Knoch., Neue Beytr., 1S01, 131. 



slightly widened behind the middle, as in the latter sex. Length 12-17 mm. 

 (Fig. 271.) 



Marion and Putnam counties ; rare. May 31-August 2. Oc- 

 curs beneath bark or on trunks of trees near clumps of red cedars. 

 Ranges from Pennsylvania to Illinois, 



1326 (4023). Sandalus nigee Knoch., loc. Git., p. 140. 



Elongate, convex. Black, somewhat shining. Thorax conical, much 

 narrowed in front ; base bisinuate, sides rounded without distinct edges ; 

 median dorsal line distinct ; disk with a basal and two lateral impressions, 

 finely and densely punctulate with very few coarser punctures intermingled. 

 Elytra nearly twice as wide as thorax, the costse very faint or obsolete ; 

 punctured as in petrophyus. Length 21-24 mm. 



Marion,. Putnam and Posey counties; scarce. Occurs on cedar 

 or beneath cover in their vicinity; also on the lower trunks or about 

 the roots of ash trees in late summer. July 14-October 1. 



1326. NIGEE. 



Fig. 271. a, male; b, female. (After Horn.) 



Elongate, subconvex. Dark 

 chestnut brown to black. Thorax 

 about twice as wide as long; sides 

 with distinct, rather sharp edges, 

 subangulate on basal third ; surface 

 densely punctate with fine and 

 numerous coarse punctures inter- 

 mingled ; median dorsal line fine, 

 slightly impressed. Elytra each with 

 three faint costae or raised lines ; in- 

 tervals very coarsely and reticulate- 

 ly punctured. Male one-third or 

 more smaller than female and with 

 the elytra narrowing, instead of 



