778 



FAMILY XXXIX. BUPKESTIDJE. 



and cylindrical, with three pairs of short, widely separated legs. 

 These live in leaves and soft twigs and are known as leaf miners. 



The two principal papers treating of the North American forms 

 are as follows : 



LeConte.-- 'Revision of the Buprestida? of the United States," 

 in Trans. Amer. Phil. Soc, XI, 1859, 187-258. 



Crotch, G. E — -Notes on the Species of Buprestidse found in 

 the United States," in Proc. Phil. Acad. Nat. Sci., 1873, 

 84-96. 



In addition to these, monographs or synopses of several of the 

 principal genera have appeared and will he mentioned under the 

 proper heading. 



Nearly 5,000 species of Bnprestida 1 are known, only about 300 of 

 which are from the United Slates. For convenience the family is 

 first divided into tribes, and these, in turn, into genera. Of the six 

 tribes recognized in the North American fauna, representatives of 

 four occur in Indiana. 



KEY TO INDIANA TRIBES OF BUPRESTID M. 



a. Hind coxae with the plates distinctly dilated near base, cut off on the 

 outer end by the prolongation of the abdomen; their front margin 

 straight, hind margin oblique ; fourth tarsal joint not lobed. 



Tribe I. Buprestini, p. 778. 

 a a. Hind coxal plates scarcely dilated internally or near base. 



b. Thorax lobed at the base ; front narrowed by the insertion of the an- 

 tennae. 



c. Mesosternum emarginate. not divided ; species larger, 5-11 mm. 



Tribe II. Julodini, p. 792. 

 cc. Mesosternum scarcely visible; species smaller, not over 3 mm. 



Tribe III. Mastogenini, p. 795. 

 bb. Thorax truncate at base; clypeus not narrowed by the insertion of 

 the antennae ; form slender. Tribe IV. Agrilini, p. 795. 



Tribe I. BUPRESTINI. 



To this tribe belong our largest and also some of the smaller spe- 

 cies. They are more or less flattened in form and are distinguished 

 by the characters given above and by the mesosternum being always 

 divided so that the cavity for the reception of the prosternal spine 

 is formed both by the meso- and metasternum. Nine genera are 

 known to be represented in Indiana, while another may occur. 



KEY TO INDIANA GENERA OF BUPRESTINI. 



a. Prosternal spine obtusely angulated behind the front coxa? ; epimera of 

 metathorax triangular, uncovered; scutellum small. 

 b. Mesosternum and metasternum closely united; antennal pores scat- 

 tered over the sides of the joints ; size large, 19 or more mm. 



I. Chalcophora. 



