36 

 Injuring the leaves. 



198. HOP PLANT-LOUSE. 



Phorodon humuli Schr. 



Remedies: Destroying all wild plum trees in vicinity; spraying 

 others.in fall or spring with strong kerosene emulsion; spraying vines 

 with kerosene emulsion or fish oil soap; after hops are picked de- 

 stroying vines. 



Chief Articles : Riley, Eept. Dept. Agric., 1888, p. 93; "Insect 

 Life," vol. i, pp. 70-133. 



199. HOP SNOUT-MOTH. 



Hypeua humuli Harr. 



Chief Article: Harris, Ins. Inj. to Veg., pp. 477-478; Smith, Bull. 

 No. 4, Dept. Agric, p. 39. 



200. COMMA BUTTERFLY. 



Grapta comma Harr. 



201. SEMICOLON BUTTERFLY. 



Grapta inicrrogationis Fab. 



INSECTS AFFECTING I]\DIATC COKIV. 



(Zea mays.) 



Injuring the Roots, 

 Hymenoptera. 



202. SMALL BROWN ANT. 



Lasius brunneus Latr, 

 [Attends and protects Corn Root-louse.] 



Lepidoptera. 



203. THE ROOT WEB WORM, 



Crambus zeellus Fern. 

 [Larvae feed upon roots.] 



Remedy : Kerosene emulsion. 



Chief Akticle : Forbes, 14th Eept. Ins. 111., p. 12, 



204. CRAMBUS EXSICCATUS ZelL 



[Larvae occasionally attack the roots.] 



205. CRAMBUS MUTABILIS Clem. 



[LarvaB occasionally attack the roots,] 



206. CRAMBUS CALIGINOSELLUS Clem. 

 [Larvae occasionally attack the roots.] 



