788 FAMII.V XXXIX. — Bl'PRESTIDzlO. 



VIII. CiiRYSOBOTiJRis Esdi. 182i). (Gr., "i,'()ld + a pit.") 



A large genus of rather In-oad and flattened l)eetles, small or 

 medium in size and having the anteinue inserted at the inner end 

 of short oblique grooves l)y which the front is narrowed; mentum 

 horn-like at base, membranous at apex ; prosternum acutely angu- 

 lated on the sides behind the coxoe and acute at tip ; scutellum large 

 and acuminate; front femora strongly toothed; first joint of hind 

 tarsi always as long as the next three, often much longer. 



The principal paper treating of the genus is by 



IIov}}. — "A ]Monogi-ai)h of the si)ecies of Chrysobothris inhabit- 

 ing the United States," in Ti-ans. Amer. Ent. Soc, XIII, 

 1886, 65-124, pis. II-VII. 



The following species have l)een taken (U- may occur in the State: 



KEY TO INDIANA SPECIRS OF CHRYSOBOTHRIS. 



(/. Side marfrins of last ventral segment with fine teetli. 

 h. Disk of thorax even, without pits or elevations. 



c. Sides of abdomen densely punctate and clothed with fine recumbent 



white pubescence; sides of thorax narrowing to base; elytra with 

 first costa faintly indicated and with indistinct foveoe on the disk. 



DEBILIS. 



cc. Abdomen sparsely punctate and not pubescent; sides of thorax 



straight and almost parallel; elytra without trace of costre or 



fovese ; color blue or green, with a me<lian purple black stripe, 



surface shining. 1499. purpureovittata. 



hJ). Disk of thorax irregular, median line more or less sulcate, often with 



small elevations. 



d. Front tibia^ of male curved and with numerous fine teeth on the 



inner edge; clypeus acutely notched at middle, semicireularly 



curved on each side. 1500. femorata. 



dd. Front tibiiie of male curved but with not more than one tooth on 



inner side ; cl.\iieus not as above. 



c. Front tibije of male with a single acute tooth one-third from 



apex; cljiieus with a short truncate median lobe. 



1501. floricola. 

 cc. Front tibia- of male dilated at tip and without teeth. 



/. Prosternum without trace of lobe in front; color dark bronze; 

 disk of thorax with median groove. 

 <j. Joints 4 to 1 1 of aiitennte more or less brownish-yellow. 



dentipes. 

 (///. .loiiits of aufcunjTe wholly metallic bronzed; hind tibipe 

 straiglit in both sexes. trinervia. 



//. I'rosternum distinctly lobed in front, the lobe short. 



h. IMedian groove of thorax well marked, the elevated smooth 

 spaces conspicuous; front tibia of male abruptly dilated 

 at tip ; first elytra! costa sinuous, especially near apex ; 

 length 10-12.5 mm. 1502. blanchardi. 



