THE CHECKERED BEETLES. 



861 



. XIII. Orthopleufa Spin. 1S44. (Gr., "straight + side.") 



Eyes coarsely granulate, emarginate in front; palpi subequal, 

 cylindrical or obconic ; antenna? 11- jointed, joints 9 to 11 forming 

 a large club, internal angles of joints 9 and 10 more or less pro- 

 duced, club much longer than funiele : tarsi rather short, first joint 

 covered by the second, second and third furnished with lamellae, the 

 fourth invisible, the fifth nearly as long as preced- 

 ing joints combined, claws toothed. One of the two 

 known North American species occurs in the State. 



1645 (5225). Orthopleura damicoenis Fabr., Ent. Syst. 

 Suppl., 1798, 117. 

 Elongate, subcylindrical. Black ; thorax red, its base 

 and apex usually black or infuscate ; elytra often with a 

 more or less distinct pale crossbar at middle. Thorax 

 cylindrical, sides sinuate, hind angles obtuse, disk finely 

 and densely punctate. Elytra parallel, rather coarsely 

 and densely punctate. Length 3.5-8.5 mm. (Fig. 342.) 



Kosciusko, Monroe, Lawrence, Orange, Knox 

 and Posey counties; scarce. June 2-August 7. ' 



Fig. 342. X 5. 

 (Original.) 



XIV. Necrobia Latr. 1796. (Or., " corpse + to live.") 



Eyes entire, coarsely granulate; last joint of palpi nearly cylin- 

 drical, slightly dilated; ante rime 11- jointed, club rather small, com- 

 pact, 3-jointed ; tarsi moderately short and broad, fourth joint very 

 inconspicuous, claws toothed at base. Three cosmopolitan species 

 represent this genus in North America, all of which occur in In- 

 diana. 



KEY TO INDIANA SPECIES OF NECROBIA. 



a. Red; head, antennae and abdomen black; elytra blue or green, base 



broadly red. 1646. ruficollis. 

 aa. Dorsal surface blue or green. 



1). Legs and basal joints of antennae red. 1647. rufipes. 



1)1). Legs and antennae dark. 1648. violacea. 



1646 (5231). Necrobia ruficollis Fabr., Syst. Ent, 1775, 57. 

 Oblong-oval, robust. Color given in key. Head and tho- 

 rax at sides densely, rather coarsely punctate. Elytra with 

 rows of fine but very distinct punctures, becoming gradually 

 finer behind but evident nearly to apex. Length 4-5 mm. 

 (Fig. 343.) 



Indiana, Stein collection; frequent. 



1647 (5230). Necrobia rufipes DeG., Mem. Ius., V, 1775, 

 105, pi. 15, fig. 4. 



Elongate-oblong, robust. Color given in key. Head and 

 thorax rather coarsely and sparsely punctate. Elytra finely 



Fig. 343. X 5. 

 (Original.) 



