1162 FAMILY LIII. CriRYSOMELID.T:. 



Tribe IX. GALERUCINI. 



KSiiiall or inediuni-sized leaf-eatinjj; beetles, having usually a 

 somewhat oblong form and a softer bod}^ covering than in those 

 tribes already treated. All of them agree in having the head ex- 

 posed; antennae placed upon the front between the eyes and there- 

 fore close together at base, the third joint usually smaller than 

 fourth ; eyes not onarginate, finely granulate ; thorax truncate or 

 emarginate in front, with the sides distinctly margined; elytra 

 longer than abdomen ; presternum very narrow, usually invisible 

 between the front coxtc, which are therefore contiguous; hind 

 femora slender, adapted for walking; hind tibi.i? usually without 

 terminal spurs; tarsi slender, not retractile. 



Many members of the tribe are very injurious to vegetation, 

 among them being the striped cucumber beetle, the long-horned 

 corn beetle and the imported elm-leaf beetle. The principal papers 

 treating especially of the genera comprising the tribe are as follows: 



LeContc. — "On the Species of Galeruca and Allied Genera in- 

 habiting North America," in Proc. Phil. Acad. Nat. Sci., 

 1865, 204-222. 

 Hon}. — "The Galei'ucini of Boreal America," in Trans. Amer. 



Rnt. Soc, XX, 1803, 57-136. 

 Horn, in tlie paper last cited, recognized 20 genera as belonging 

 to the tribe. Of these 12 are known to be or should be represented 

 in the State. 



KEY TO INDIANA GENERA OF GALEBUCINI. 



a. Front coxal cavities closed behind. 



6. Tarsal claws appendicnlate, i. e., ^Yith broad expansion at base; tibia? 

 with spurs ; smaller, not over 7 nun. 

 e. First .I'oint of antennjie longer than fourth, third joint elongate; 

 elytra dull red or yellow with black s])otp. XLII. Cerotoma. 

 cc. First .joint of antennte not longer than fourth, third joint shorter; 

 elytra metallic blue or greenish. Agelasa 



/)/*. Tarsal claws bifid: front and hind tibi:e witlidut spurs; larger, 9 or 

 more mm. XLIIT. Galeruca. 



an. Fi'ont coxal cavities open behind. 

 (1. Claws of tarsi bifid or simple. 



e. All the tibi.ie without terminal spurs. 



/. Epipleur.'p short, sraroely passing the middle of elytra; elytra 

 metallic blue with a dull yellow median crossbar. Monocesta. 

 //. lOpipleune long, reaching nearly to tips of elytra. 



g. Antenmie longer than half the body; tarsal claws deeply bifid 

 in both sexes. 



