778 FAMILY XXXIX. — BUPKESTIDilC. 



;iud 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 Buprestidre of the United States," 

 /;( Trans. Amer. Phil. Soc, XI, 1859, 187-258. 



Crotch, G. i?.^" 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 oi- synopses of several of the 

 principal genera have appeared and will be mentioned under the 

 proper heading. 



Nearly 5,000 species of Buprestida- are known, only about 300 of 

 which are from the United States. 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 o(,cur in Indiana. 



KEY TO INDIANA TBIBES OF BUPEESTID^. 



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

 outer end Ijy tlie prolongation of the abdomen ; their front margin 

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



Tribe I. Buphestini, p. 775. 

 u«. Hind coxal plates scarcely dilated Internally or near base. 



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

 tenna, 

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



Tribe II. Julodini, p. 702. 

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



Tribe III. Mastoqenini, p. 795. 



66. Thorax truncate at base: clypeus not narrowed by the insertion of 



the antenna^ : form slender. Tribe IV. Aguilini, p. 7'.)5. 



Tribe I. BUrRESTINI. 



To this tribe Ijidoug our laru,\st and also some of the smaller spe- 

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

 l)y the characters given aliove and l)y the mesosternum being always 

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

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

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



KEY TO INDIANA GENERA OP BUPRESTINI. 



fl. rrosternal spine obtusely nngulatcd behind the front coxre; epimera of 

 metathorax triangular, uncovered; scutellum small. 

 6. Mesosternum and melasternum closely united; aniennal pores 'scat- 

 tered over the sides of the joints; size large, 1!) or more mm. 



I. Chaloopiiora. 



