. Injurious insects and the use of insecticides [microform] : a new descriptive manual on noxious insects, with methods for their repression . ed by entomologistsas occurring in the United States. The first is a native species known as the White-marked TussockMoth {Orgyia leucostigma), which together with the other species isthus described by Dr. Chas. H. Fernald in Bulletin, No. 20, HatchExperiment Station. White-marked Tussock Moth [Orgyia leucostigma, A. and S.).This insect is a native of this country, and was figured and describedby Abbot and Smith in 1797. Since that time it has received
. Injurious insects and the use of insecticides [microform] : a new descriptive manual on noxious insects, with methods for their repression . ed by entomologistsas occurring in the United States. The first is a native species known as the White-marked TussockMoth {Orgyia leucostigma), which together with the other species isthus described by Dr. Chas. H. Fernald in Bulletin, No. 20, HatchExperiment Station. White-marked Tussock Moth [Orgyia leucostigma, A. and S.).This insect is a native of this country, and was figured and describedby Abbot and Smith in 1797. Since that time it has received theattention of nearly all of our entomologists. The eggs of this species, laid on the cocoon of a female attached toa twig of a tulip-tree, was brought to the Insectary, April 22, were arranged in an irregular cluster containing about 225 innumber and were covered by a -white, glistening, frothy eggs are globular with a slight depression on the top, about onetwenty-fifth of an inch in diameter and are yellowish white with apale brown sj)ot on the top and a ring of the same color around it. 192 INJURIOUS Fig. 171.—White Marked Tussock Moth. Full-grown Caterpillar. The male expands about an inch and a quarter, and is of a dullashy gray color with several wavy, dark brown lines crossing the forewings which are whitish along the front edge with a small black spotnear the apex and a small white spot near the anal angle. The antennaeare heavily fringed. The females are lighter gray than the males andhave no wings, only the rudiments of them being visible. The bodyis oval in outline and quite plump before the eggs are laid. These eggs hatched May 10th, and the caterpillars passed theirmolts (the description of which is omitted here) and reached maturityJune 15th. The full-grovra caterpillars (Fig. 171) are about an inchand an eighth in length, of a bright yellow color, sparingly clothedwith long, fine, yellow hairs on the sides of the body, and hav
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbenefic, bookyear1894
