33 



INJURING THE FRUIT. 



THE WEEVILS. FAMILY CURCTJLIONIDiE. 

 ZPART OW CASE 31. 



167. Tlie Nut Weevils (Genus Balaninus). 



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

 various sorts. 



Exhibit: Adults of the following species: Balaninus nasicus Say, Balaninus caryse 

 Horn, Balaninus quercus Horn. 



168. The Walnut Fruit Weevil (Conotrachelus juglandis Lee). 

 The larvae live in green fruit of walnut. 



Exhibit: Adults. 



CONE AND NUT WORMS. ORDER LEPIDOPTERA. 



PART OF CASE 31. 



169. The Hickory Husk- Worm (Grapholitha caryana Fitch). 



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

 Exhibit: Adults, work. 



170. The Spruce Cone- Worm (Pinipestis reniculella Grt.). 

 Larvae 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 long-leaf pine. 

 Exhibit: Work. 



INJURING THE TWIGS AND SMALLER BRANCHES. 



THE CICADAS. FAMILY CICADIDiE. 

 IPAIRT OF CASE 31. 



172. The Seventeen-Year Cicada (Tibicen septendecim Linn. ). 



The most destructive species, but owing to the long period required by the young 

 to reach maturity only injurious some years. 

 Exhibit: Adults, pupa, work. 



THE SCALE INSECTS. FAMILY COCCIDiE. 

 PART OF CASE 31. 



173. The Cottony Maple Scale (Pulvinaria innumerabilis Rath.). 

 Becomes at times very abundant on twigs of maple. 



Exhibit: Adult scales on twigs. 



174. The Gloomy Maple Scale (Aspkliotus tenebricosus Comst.). 



At times very abundant on maple. Principally injurious to shade trees in the 

 neighborhood of towns. 

 Exhibit: Adult scales on bark. 



175. The Hickory Soft Scale (Lecanium sp.). 



At times abundant on hickory and pecan in the Southern States. 

 Exhibit: Adult scales on twigs. 



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