37 



211. The Rig-id Cypress Borer (CEme rigida Say). 

 Larvae mine inner bark of girdled cypress and dying cedar. 

 Exhibit: Adult, larva, work. 



212. The Southern Oak Borer {Mallodon dasystomus Say). 



Larvae bore in healthy live-oak, hackberry, and hickory trees, greatly injuring 

 them. Southern States. 

 Exhibit: Adults. 



213. The I<ive-Oak Root-Borer {Mallodon melanopus~Liim.). 



Larvae bore into the roots of young oaks, causing dwarfed and worthless trees. 

 Southern States. 

 Exhibit: Adult. 



214. The Variable Oak Borer (Phymatodes variabilis Fab.). 



Larvae mine inner bark of dying and recently dead oak; are also injurious to tan 

 bark. 



Exhibit: Adult, work. 



215. The Thunderbolt Beetle (Arhopalus fulminans Fab.). 

 Larvae mine the inner bark and sapwood of chestnut and oak. 

 Exhibit: Adults. 



216. The Lesser Prionus (Orthosoma brunneum Forst. ). 

 Larva in decaying logs and stumps of nearly all forest trees. 

 Exhibit: Adults. 



217. The Cottonwood Root-Borer (Plectrodera scalator Fab.). 

 Larvae in roots of poplar and cottonwood. 



Exhibit: Adults. 



218. The Broad-Necked Prionus (Prionus laticollis Dru. ). 



Larvae in roots of oak and poplar. Sometimes destructive. Also in stumps of pine. 

 Exhibit: Adults. 



CASE 38. 



219. The Destructive Spruce Wood-Borer (Tetropium cinnamopterum Kirby). 

 Larvae mine green bark and wood of injured and dying spruce, hastening death 



and promoting decay. 



Exhibit: Adults, larvae, work. 



220. The "Wavy Spruce Borer (Xylotrechus undulatus Say). 



Larvae mine the inner bark and sapwood of Douglas spruce, fir, and hemlock. 

 Exhibit: Adults. 



221. The Canadian Leptura (Leptura canadensis Fab.). 



Larvae mine sapwood of dead spruce and hemlock, inducing rapid decay. 

 Exhibit: Adults. 



222. The Red-Headed Clytus (Neoclytus erythrocephalus Fab.). 



Larvae mine in dead and dying bark and sapwood of a great variety of forest trees, 

 maple, ash, hickory, sweet-gum, cypress, etc. 

 Exhibit: Adults. 



223. The Ribbed Pine Borer (Rhagium lineatum Oliv.). 



Larvae mine the inner bark of dying and dead pine, spruce, and some other 

 conifers. 



Exhibit: Adults, larvae, pupa, work. 



224. The Black-Horned Pine Borer (Callidium antennatum Newm.). 

 Larvae mine inner bark and wood of dying and dead pine, cedar, etc. 

 Exhibit: Adults, work. 



