1148 



FAMILY LIII. CHRYSOMELID.il. 



shorter than either the fifth or seventh. All four of the forms 

 recognized by Horn occur in Indiana. They were formerly in- 

 cluded under the genus Colaspis. 



KEY TO SPECIES OF XODONOTA. 



(/. Clypeus much contracted between the bases of the antennae; surface 

 above finely punctate, beneath not or but little punctate. 



2127. CLYPEALIS. 



aa. Clypeus broad between the antenna?. 



h. Form short, oval ; punctuation of thorax simple ; elytra without a 

 costa behind the umbone. 

 c. Upper surface shining ; metasternum not punctate on sides. 



2128. TR1STIS. 



cc. Upper surface dull ; metasternum coarsely punctate on sides. 



2129. CONVEXA. 



hi). Form oblong, subparallel ; punctuation of thorax substrigose ; elytra 

 with distinct costa behind the umbone. this sometimes absent in fe- 

 male. 2130. PUNCTICOLLIS. 



2127 (10,371). Nodoxota clypealis Horn. Trans. Ainer. Entom. Soc, XIX. 



1892, 231. 



Resembles tristis closely in form, size and general appearance. Color 

 usually bronzed, shining. Readily separated by the form of the clypeus, 

 which is distinctly narrowed between the insertion of antenna?. Punctures 

 of upper surface less distinct and more sparse. Length 3.5-4 mm. 



Southern half of State - frequent. June 17-August 9. Occurs 

 with t)-istis. 



2128 (6778). Nodonota teistis Oliv.. Ent., YT. 1808, 889. 



Oval, convex. Color variable, dull bronze, bluish or bluish-green ; an- 

 tenna? pale at base, the five outer joints and legs piceous. Thorax more 

 than twice as wide as long, front angles prominent, sides regularly curved, 

 finely and rather sparsely punctate. Elytra oval, convex, the umbone dis- 

 tinct ; surface more coarsely punctate than thorax, the punctures in irregu- 

 lar rows, two or three of which occur between each interval. Males with 

 first joints of front and middle tarsi distinctly dilated. Length 3-4 mm. 



Throughout the State ; common. May 24- August 8. Occurs on 

 various herbs and shrubs in dry upland localities. The legs are 

 sometimes dull yellow. 



2129 (6778a). Nodonota convexa Say, Journ. Phil. Acad. Xat. Sei.. III. 



1824. 443; ibid. II. 212. 

 Oval, convex. Color bronzed, rarely blue, or slightly greenish. Thorax 

 as in tristis, the punctures more sparse, the median line usually smoother. 

 Elytra much more coarsely punctate than thorax, the punctures everywhere 

 confused except near apex. Length 4—4.5 mm. 



