580 NEW YORK STATE MUSEUM 



23 Grape vine plume moth (Oxyptilus periscelidacty- 

 1 u s). Small, greenish, hairy caterpillars webbing together terminal leaves. 



Treatment : pick and destroy infested tips. 



24 Eight spotted forester (Alypia octomaculata). Red- 

 dish, black-ringed caterpillars about i^ in. long feeding on grape vine 

 and Virginia creeper in spring. 



Treatment : handpicking ; spray with poison. 



25 White flower cricket (Oecanthus niveus) Series of punc- 

 tures in twigs of various kinds are made by this insect for the reception 

 of its eggs. Injury is usually too little to call for remedial measures, 

 specially as the insects are predaceous and therefore beneficial. 



SHADE TREE PESTS 



26 White-marked tussock moth (Notolophus leuco- 

 stigma). Beautiful caterpillars having three black plumes, four yellow 

 or white tufts, a coral red head, and body marked with black and 

 yellow. Defoliate horse chestnut, elm and other shade trees. Winter 

 passed in white, frothy egg masses, the caterpillars hatching the latter 

 part of May and spinning up about a month later, the moths appearing 

 in July. Two broods about New York city, but one farther north. 



Treatment : destroy eggs or spray foliage of infested trees with poison. 



27 Forest tent caterpillar : maple worm (Clisiocampa 

 d i s s t r i a). Foliage of maple and fruit trees eaten in May and June 

 by hairy blue-headed caterpillars with silvery dots along the back. Co- 

 coons spun in June, the brown moth flying in July. Eggs in belts 

 encircling smaller twigs, remain unhatched till spring. 



Treatment : destroy eggs ; kill the caterpillars when massed on trunk 

 and limbs ; spray foliage of infested trees with poison ; collect and destroy 

 cocoons. 



28 Pigeon Tremex (Tremex columba). Adults frequently 

 known as " horn tails ", are usually found in July around diseased and 

 dying tree trunks. The young borers occur near the surface, but full 

 grown ones may make their way to the center of even large trees. Not 

 usually very injurious. 



Treatment: cut and burn badly infested trees. 



29 Lunate long* sting (Thalessa lunator). Brownish, 

 wasp-like insects with yellow markings and a slender ovipositor or " tail " 

 2 to 4 in. long. Frequenting elms and maples infested by the pigeon 



