90 i 



THE LEAF-BEETLES. FAMILY CHRYSOMELID-ffi. 



r^KT' OF C^SE 31. ! 



163. The Imported Elm Leaf-Beetle. ] 



(iakruri'lla lutcola Mi'ill. 



A very serious enemy to the elm in the p]astern States. -; 



Exhibit: Adults, work. j 



164. The Larger Elm Leaf-Beetle. i 



i 



Monocesta coryll Say. •■ 



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



Exhibit: Adults, work. • 



165. The Striped Willow Leaf-Beetle. | 



Mdasoma scripta Fab. 



Both larva' 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, pupa'. : 



166. The Spotted Willow Leaf-Beetle. | 



Melasoma lapponjcu hinn. 



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

 Exhibit: Adults. 



INJURING THE FRUIT. 



THE WEEVILS. FAMILY CURCULIONIDiE. 



F^RT OF C^SE 31. \ 



167. The Nut Weevils. -j 



( renus Balrminus. ] 



There are numerous species, the larvfe of which live within acorns and nuts of J 



various sorts. i 



i<'.XHiBiT: Adults of the following species: Balaninus nasicus Say, Balaninus caryx ] 



Horn, Balaninus quercus Horn. j 



168. The Walnut Fruit Weevil. 



Covofr<(rlieh(s jiiglandis Lee. i 



The larv.ie live in green fruit of walnut. j 



KxiiiHiTs: Adults. | 



CONE AND NUT WORMS. ORDER LEPIDOPTERA. 



F^VRT OF' Cj^SE 31. j 



169. The Hickory Husk- Worm. i 



i 

 GrapJiolitJia caryaiia Fitt;h. i 



The larvjp live within the immature nuts and husks of the hickory and pecan. 



Exhibit: Adults, work. : 



170. The Spruce Cone-Worm. 



Dioryctia reniculella Grt, ] 



Larvpe attack cones of spruce. 



Exhibit: Adult, work. ! 



171. The Southern Pine Cone- Worm. '■ 



An insect closely allied to the spruce cone-worm which attacks the cone of the 

 Southern longleaf pine. 



Exhibit: Work. ' 



