100 FRUIT INSECTS 



The White-marked Tussock-moth 



Hemerocampa leucostigma Smith and Abbot 



There are three species of these tussock-moths that may 

 injuriously infest orchards. Two of these are native American 

 insects and one is an old and common European species. 



Fig. 111. — Caterpillar of the white-marked tussock-moth, full-grown (Xls)- 



With their many hairs arranged in striking pencils, tufts 

 and tussocks or brushes, the caterpillars of the white-marked 

 tussock-moth present a very handsome and characteristic 

 appearance (Fig. 111). They are about 1| inches long when 

 full-grown and of a general dark gray color with a broad vel- 

 vety black band bordered by yellow stripes on the back and a 

 similar yellow stripe along each side below the spiracles. The 

 head, thoracic shield and two raised glands on the back of the 

 6th and 7th abdominal segments are bright vermilion-red. 

 Their striking characteristics are dense, brush-like, cream- 

 colored tufts or tussocks of hairs on the back of each of the first 



