134 ^'^^^' VORK STATE MUSEUM 



Synopsis of the larvae of Hemerocampa 



Head yellow, colors in general jjale d e f i n i t a 



Head red 



A distinct yellow subdorsal band leucostigma 



Gray marks predominate, the yellmv band not noticeable inornata 



Head black 



Warts crimson, bruslilike tufts dark along the crest, the yellow lines 

 along the sides broken into spots 



One black tuft in young larva vetusta 



Two black tufts in young larva var. c a n a 



Description. The full grown caterpillar has a coral red head, a pair of 

 loiii^r black i)lunies just over it, a single one at the opposite extremity of the 

 b()d\', four dclicale \cll<j\vish or white- brushlike tufts on its back and just 

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

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

 black Ijand bordered by )-ellowish subdorsal stri])es. I^ach side is dark 

 gray, except the yellowish tubercles. A black line indicates the position of 

 the spiracles or breathing pores, and below this latter line it is yellow, the 

 legs usually being jialer [pi. 7, tig. i |. This gives the general appearance 

 of the caterpillar after it has become half or two thirds grown, and at a 

 time when its depredations begin to be ajiparent. The recently hatched 

 larva is a [lale yellowish or whitish creature with long, irregular hairs. As 

 it feeds, increases in size, and casts its skin [pi. 7, lig. 5I from time to time, 

 one after another of the characteristics of the full grown larva are assumed. 

 When maturity is reached, the larvae spin their thin cocoons in the 

 crevices of the bark [pi. 7, fig. 4], interweaving their long hairs, and within 

 this shelter transform to yellowish white pupae more or less shaded with 

 dark brown or black [pi. 7, fig. ~\. ' 



The difference between the sexes in the adult stage is strikingly shown 

 by comparing on plate 7, figure 2, an illustration of the male, with figure 3, 

 a representation of the feinale. The former is a beautiful moth with large, 

 featherv antennae, tufted legs, and th(' wings and body delicately marked 



