32 



THE FALSE CATERPILLARS OR SAWFLIES. FAMILY TENTHRE- 



DINIDiE. 



PART OW CASE 31. 



156. Abbott's White-Pine Sawfly (Lophyrus abbotti Leach). 



This species, together with several closely allied forms, is at times very destructive 

 to pine. 



Exhibit: Adults, larvae, cocoons. 



157. The Larch Sawfly (Nemalus erichsonii Hartig). 



One of the most destructive forest insects; the larvae at various times past entirely 

 defoliated the larch throughout the Northeastern States and caused the death of a 

 large proportion of the trees. 



Exhibit: Adults. 



158. The Large American Sawfly (Cimbex americana Leach). 

 Larvae destroy foliage of elm, willow, poplar, and linden. 

 Exhibit: Adult. 



MISCELLANEOUS FOLIAGE INSECTS. 



PART OIF CASE 31. 



159. The Common Walking" Stick (Diapheromera femorata Say). 

 Young and adults devour foliage of deciduous forest trees. 



Exhibit: Adult. 



160. The Katydid (Microcentrum laurifolium Linn.). 

 Young and adults feed on foliage of trees. 

 Exhibit: Adult, eggs. 



LEAF-BEETLES. FAMILY SCARABiEIDiE. 



161. The Rhinoceros Beetle (Dynastes tityus Linn.). 

 Larvse mine in decaying stumps; adults destroy foliage of ash. 

 Exhibit: Adults. 



162. The Goldsmith Beetle (Cotalpa lanigera Linn.). 



Adults on oak, poplar, and other deciduous trees, sometimes defoliating them. 

 Exhibit: Adults. 



THE LEAF-BEETLES. FAMILY CHRYSOMELLTXffi. 



:part of case 3i. 



163. The Imported Elm Leaf-Beetle (Galerucella luteola Mull.). 

 A very serious enemy to the elm in the Eastern States. 

 Exhibit: Adults, work. 



164. The Larger Elm Leaf-Beetle (Monocesta coryli Say). 



Adults and larvse destroy foliage of elm in sections of the Middle West. 

 Exhibit: Adults, work. 



165. The Striped Willow Leaf-Beetle (Melasoma scripta Fab.) . 



Both larvae and adults feed on foliage of poplar and willow, and are at times very 

 destructive to these trees. An especial enemy of the osier willow industry. 

 Exhibit: Adults, pupae. 



166. The Spotted Willow Leaf-Beetle (Melasoma lapponica Linn.). 

 Habits similar to the above, but less abundant and injurious. 

 Exhibit: Adults. 



