326 ELEMENTARY STUDIES IN INSECT LIFE 



Plum. BUD MOTH. See under Apple. 



CANKER WORM. See under Apple. 



CURCULIO. ( C onotrachelus nenuphar Herbst. ; or- 

 der Coleoptera.) The larva is a whitish grub, which 

 feeds on the fruit. 



Remedies. Jar the trees with padded mallet, in 

 the early morning, beginning when the trees are in 

 bloom and continuing four or five weeks. Place sheets 

 under the tree, to catch the beetles as they fall; gather 

 and destroy. The sheet or canvas may be arranged 

 upon a frame in the form of an inverted umbrella, 

 with one section left out to admit the tree; and this 

 structure may be pushed around from tree to tree on 

 wheels. 



FLAT-HEADED BORER. See under Apple. 



PLUM-GOUGER. (Coccotorus scutcllaris Lee.; order 

 Coleoptera.) The larva feeds on the kernel. The beetle 

 bores a round hole in the plum. The curculio makes a 

 crescent mark. 



Remedy. Same as for Curculio. 



PLUM SCALE. (Lecanium sp. ; order Hemiptera.) 

 A large brown scale insect. 



Remedy. Spray with kerosene emulsion, or in win- 

 ter months with crude petroleum. 



Potato. --COLORADO POTATO BEETLE. (Dorypliora 

 decemlineata Say; order Coleoptera.) Both beetle and 

 larva feed upon the leaves. 



Remedies. Arsenites. 



STALK WEEVIL. (Tricliol>aris trinotata Say; order 

 Coleoptera.) The larva bores into the stalk of the po- 

 tato near the ground. 



Remedy. - Burn all infested vines. 



