ENTOMOLOGY IN OUTLINE COLEOPTERA. 



103 



the roots of plants. There are 

 two groups in this family : the 

 scavengers, of which the tum- 

 ble-bugs are examples, and 

 the leaf-chafers, represented 

 by the "May-beetles" and 

 "June-beetles." Macrodacty- 

 los subspinosus, the rose-chafer, 

 a yellowish beetle with pale 

 red legs, does great damage to 

 roses and grapes and other 

 flowers and fruits. 



The genus Lachnosterna 

 contains the "June-beetles," 

 or u bugs," from whose attacks 

 lawns and root-crops surfer. 



The rhinoceros-beetles be- 

 long to the genus Dynaste, and are so named on account of large horns 

 on the head, and another larger horn, accompanied by two smaller ones, 

 projecting forward from the prothorax. 



There are several genera of flower-beetles, one of the com- 

 moner forms being the "bumble flower-beetle," Uphoria 

 inda. It is yellowish brown and hairy, and in early spring 

 is seen flying near the ground with a loud buzzing noise. 



FIG. 92. Grapevine beetle (Pelidnota punctata). 

 a, larva ; 6, pupa ; c, beetle ; d, antennae ; /, leg, 

 enlarged. 



Section TETRAMERA or PHYTOPHAGA. 



FIG. 93. Rose- 

 chafer (J!fa- 

 crodactylos 

 subspinosus). 



This section comprises those beetles which, apparently, have four 

 segmented tarsi, the fourth segment being so fixed with the third as to 



be indistinguishable. There 

 are four families under this 

 section, and among them are 

 very many of our worst crop 

 enemies. 



The family Chrysomelidse 

 is one of the largest of the 

 beetle families and probably 

 contains more injurious forms 

 than any other. They are 

 generally small, oval forms, 

 strongly convex above, pos- 

 sessing small heads and widely 

 separated antenna?. The 

 adults, when disturbed, have 

 the habit of folding up the legs and dropping inert to the ground. 



June-bug or white grub. 

 3-4, adults. 



1, pupa; 2, larva; 



