ORDER COLROPTERA 



109 



Familj Lampyrid;p. Ventral Begmcnl - antenna 



ranis pectinate or flabellate, inserted on the from . -kin rather thin ; 



Fig. Hi. Photuris pyralis, flre-fly. Natural size, '.larva; /<, pupa: 

 < , uuder side of a larval Begment. — After Rili 





ffi 



" 



found on plants. While the Phengodini arc phosphorescent, the 

 tribe Lampyrini embraces the fire flies, which have phi 

 pboresccnl organs at the end of the abdomen. In the 

 specif- lit' Photurii both sexes are h inged, but in Lampyris 

 the females, called glow worms, are larva-like and wing 

 The larva* are often carnivorous, living on snails, 

 worms, etc. The femalesof Phengodes and Zarhipis are 

 qoI easily distinguishable from the larva; and arc phos- 

 phorescent Fig. ill. 



Family Buprestidae. -Skin very thick and solid; antenna 

 serrate; tarsi with membranous lobes as in the Cleridae. 

 Larvae with a large, broad prothoracic Begment, body be 

 hind slender, cylindrical; living under bark Tliis group 

 is numerous in species, about 2700 being known. I 

 usually bave metallic reflections and often rich colors; but 

 are very in jurious to fruit and -hade trees (pines, oaks, 

 etc.). Chrysobothris femorata Oliv. is a common and de- 

 Btructivi species; in Dicerca the tips of the elytra separate. 

 Chtilcophora virginiensis Drury bores into the trunks of 

 pines, Melanophila drummondi (Kirbj i 



Family Throsc-idae. Resembling the next family, but 

 with the prothomx fixed soas to be enabled to leap. V' 

 ■• i\ 





v- 



Ken 



Fig. 115. I 'hrysobothris fern »■ 

 rata and larva. 



FlG. 116 — Pnimni 



Family Elateridffl.- Prothorax loosely articulated, osternum 



prolonged behind, forming a sharp spine which m< ves in a cavity 

 in the mesosternum, so as to suddenly throw i. etle in tie 



