THE CHECKERED I'.EETl.ES. 840 



h. Hind tarsi ratlier broadly dilated ; tliurax with at most a nar- 

 row shallow groove near apex, and without a median line. 



A'. EXOCXERl .s. 



lih. Hind tarsi slender and luntjer; thorax with a very deep sub- 

 apical groove and with a median impressed line. 



VI. Tl-IANASIMUS. 



dd. Eyes entire. 



i. Antennal club gradually formed, 3-jointed ; elytra bright red. 



VII. Zenodosus. 



a. Antennal club small, subglobuse, 2-iointed; elytra black or black 



and dull yellow. VIII. Hydnoceea. 



I. ]\roxoPHYLLA Spin. 1S41. (Gr.. "single 4- leaf.") 



Eyes deeply ciuMrjiinate in front, neai-ly divided ; maxillary 

 palpi cylindrical ; last joint of labial palpi strongly dilated, hatchet- 

 shaped; tarsi elongate, distinctly fi\e-.-jointed ; claws bidentate. An- 

 tenna; with terminal joint large, compressed, about equally as long 

 (female) or ver>- much longer (male) than all the preceding joints 

 combined. Three species are kuown from North America, one of 

 which occur-i in Indiana. 



1621 (5127). ilONOPHYLLA TEHMixAJA tSny, ISdst. Journ. Nat. Hist., I. lS:J."i, 

 160; ibid. II, (;:i7. 

 Ehiugate, subcylindrlciil. Black, moderately shining; 

 thorax yellcjw with a large or small discal black sijot; ely- 

 tral flanks from humeri to middle and a transverse spur at 

 middle (the latter sometimes wanting) yellow; abdomen en- 

 tirely yelh.w, male, the apical (sixth) ventral segnieut black, 

 female. Pubescence of elytra and abdomen grayish, mod- 

 erately sparse, of thorax yellowish ; that of discoidal spot 

 and of occiput of head black, moderately long, dense and 

 erect. Thorax cylindrical, longer than wide; its disk and 

 that of elytra rather coarsely, densely punctate. Length 4- 

 7 nun. (Fig. 330.) 



Posey County ; rare. June 4-Jtine 6. 



TiUus coUaris Si)iii.. is known from Georgia and Texa.s. and has 

 been taken by Dury near Cincinnati. It is black, the thorax en- 

 tirely or with disk red ; length 5-5.5 inm. 



II. (^JiATODEKA Gray, 1S:{2. (Ur.. "\\a\e [- neck,") 



Ej'es moderately ciuarginate in front; maxillary palpi cylindri- 

 cal; last joint of labial palpi strongly dilated, hatchet-shaped; tarsi 

 elongate, distinctly 5-jointed; antenna,^ more or less serrate. Fifty 

 species are known frnni X' rlli America, three of which have been 

 taken in Indiana, while another may occur. 



