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NEW YORK STATE MUSEUM 



Characteristics. The caterpillar has a coral red head, a pair of long 

 black plumes just over it, a single one at the opposite extremity of the 

 body, four delicate yellowish or white brush-like tufts on the back, and 

 just behind them, separated only by a segment, two small, retractile, red 

 elevations. Along the back, except for the tubercles and tufts, there is a 

 broad black band bordered by yellowish tubercles. A black line 

 indicates the position of the spiracles or breathing pores, and below this 

 latter line it is yellow, the legs being paler (fig. i, a). This gives the 



Fig. i White marked tussock moth, a, larva; b, female pupa; c % male pupa; </, e, male moth; 

 y, female moth; g\ same ovipositing; /i, egg mass; /', male cocoons; female cocoons, with moths 

 laying eggs— all slightly enlarged (after Howard [Division entomology], U. S. Dep't agriculture, 

 year book, 1895). 



general appearance of the caterpillar when it is half or two thirds 

 grown, and at a time when its depredations begin to be apparent. 

 The recently hatched larva is a pale yellowish or whitish creature with 

 long, irregular hairs. As it feeds, increases in size and casts its skin 

 from time to time, one after another of the characteristics of the full 

 grown larva are assumed. 



