216 



GUIDE TO CALIFORNIA INSECTS. 



CHRYSOMELSDyE. 



The plant beetles of the family ChiTsomelidse are in some cases general 

 feeders tho in most cases they are associated with a particular plant. The 

 following list includes most of the commoner species: — 



Coniferae Luperoides smaragdinus. Pine Glyptoscellis illustris, pubescens. 

 Fir Syneta carinata Cedar Glyptoscellis pubescens, Willow Crepidodera helxines, 

 Diachus, Disonycha 5-vittata, Galerica flavolimbata, Glyptoscellus albidus, Pla- 



Figure 194. Diabrotica soror. 



umbine Cassida bicolor. Sidalcea Calligrapha sigmoidea. Marsli marigold C'il- 

 giodera, Syneta albida, Zeugophora californica. Poplar Syneta albida Zeugc- 

 phora. Alder Haltica bimaiginata. Buckeye Luperodes bivittatus. Oak Sy- 

 neta simplex. Ceanothus Luperodes turquatus, varipes Odontota californica, 

 Orsodachna atra. Manzanita Colaspidea varicoloi, Colaspis- oregonensis Grape 

 Adoxus, Haltica carinata. Raspberry Paria canella. Cucumber CopLOcycla 

 bicolor, Diabrotica trivittata. Solanum Cassida pallidula. Datura Lema.. Col- 

 ligrapha elegans. Corn andbeets Chsetocnema denticulata. Milkweed Chryso- 

 chus. Goldenrod Trirhabda flavimarginata. Eriogonum Saxinu? saucia. Eri- 

 odactylon Trirhabda caduca, eriodactylonis. Grass Disonycha pennsylvanica 

 Sedge Donacia. 



SYNOPSIS OF GENERA. 



Haltica: hind femora enlarged and with transverse iiui.ression on base of 



