INSECT PESTS 



301 



Leopard Moth: Larvae make deep tun- 

 nels under the bark, often girdling the 

 branches, which later break off. Small 

 trees may be examined, and the borers 

 killed by injecting carbon disulphide and 

 closing the openings, or by inserting a wire. 



Elm Scale: Oval, brown, soft scales, 

 with white marginal fringe, occur in the 

 crevices of the bark of the trunk and larger 

 branches. Spray with kerosene emulsion. 



White Elm Scale: A whitish pear- 

 shaped scale on twigs. Spray about June 

 10, with kerosene emulsion. 



Elm Woolly Aphids: Several species 

 curl the leaves, or form in cottony masses on 

 the bark. Spray with kerosene emulsion. 



EUONYMUS 



Euonymus 

 Scale: Various 

 species of Euony- 

 mus are injured 

 by this scale, 

 which has narrow 

 white shells in 

 the male, and 

 pear-shaped gray 

 or brown shells 

 in the female. Cut 

 and burn the 

 worst infested 

 twigs. Spray in 

 June with kero- 

 sene emulsion to 

 kill the young. 



Euonymus Scale 



FERN 



Woolly Bears: Several light brown 

 hairy caterpillars devour the fronds in late 

 Summer. Spray with lead arsenate. 



Hemispherical Scale: Brown, oval, 

 convex scales on fronds of plants under 

 glass. Apply soap and water or nicotine 

 solution as a dip or spray. 



GERANIUM 

 Greenhouse leaf-tyer: Small, green 

 wriggling caterpillars feed upon the leaves 

 of plants under glass. Spray with lead 

 arsenate. 



White Fly: See Tomato. 



GOOSEBERRY 

 Currant Worm : Larvae devour foliage- 

 Apply hellebore or lead arsenate early in 

 Mav 



Yellow Currant Fruit Fly: Small 



maggots infest the berries, which color pre- 

 maturely and drop. Destroy infested fruit. 



Gooseberry Fruit Worm: Greenish 

 larvae feed inside the berries. Destroy 

 infested fruit. 



GRAPE 



Grape Plume Moth: Green spiny 

 caterpillars web together the leaves of new 

 shoots. Crush by pinching the nests. 



Grape Vine Flea Beetle: Adults and 

 larvae devour the leaves. Spray with lead 

 arsenate. 



Rose 

 Chafer: 



Long- 

 legged, 

 brow n 

 beetles ap- 

 pear about 

 the middle 

 of June and 

 feed upon 

 the leaves, 

 flowers and 

 newly set 

 fruit, often 

 doing great 

 d a m a g e . 

 Spray heav- 

 ily with lead 

 open and, if 



Rose Chafer 



arsenate just before blossoms 

 necessary, again after fruit has set. 



Grape Root Worm: Adults eat chain- 

 like holes in leaves in July, and grubs eat 

 roots, often causing great injury. Spray 

 foliage with lead arsenate. 



Grape Berry 

 Moth: Larvae 

 feed inside the 

 berry. Spray with 

 lead arsenate after 

 fruit sets, and re- 

 peat twice at in- 

 tervals of ten 

 days. Place 

 paper bags over 

 the clusters soon 

 after the fruit sets. 



Sphinx and 

 other Caterpil- 

 1 a r s: Several 

 kinds of horn 

 worms, as well as 

 other caterpillars, 

 feed on the 

 leaves. Spray with lead arsenate or practice 

 hand-picking. 



Grape Phylloxera: Sucks sap from 

 leaves and roots, forming galls, causing 

 serious injury to European varieties. Graft 

 on stocks of native species. 



Grape Leaf -Hopper : Small yellow and 



red-marked leaf-hoppers sucking sap from 

 under side of the leaves. Spray with nico- 

 tine solution. 



Grape 

 Berry 

 Moth 



