34^ THE STUD Y OF INSECTS. 



The Rosy-striped Oak-worm, Anisota virginiensis (A. vir- 

 gin-i-en'sis). — The wings of the female are purplish red, 

 blended with ochre-yellow ; they are very thinly scaled, and 

 consequently almost transparent ; and are not speckled with 

 small dark spots (Fig. 426). The wings of the male are 



Fig. 427. — Anisota virginiensis, 

 Fig. 426. — Anisota virginiensis, female. male. 



purplish brown, with a large transparent space on the middle 

 (Fig. 427). The larva is of an obscure gray or greenish color, 

 with dull brownish yellow or rosy stripes, and with its skin 

 rough with small white warts. There is a row of short spines 

 on each segment, and two long spines on the mesothorax. 



The Orange-striped Oak-worm, Anisota senatoria (A. sen- 

 a-to'ri-a). — The wings of the female are more thickly scaled 

 than in the preceding species and are sprinkled with numer- 

 ous blackish dots ; in other respects the two are quite similar 

 in coloring. The male differs from that of A. virginiensis 

 in lacking the large transparent space on the middle of the 

 wings. The larva is black, with four orange-yellow stripes 

 on the back and two along each side ; its spines are similar 

 to those of the preceding species. 



The Spiny Oak-worm, Anisota stigma (A. stig'ma). — The 

 female closely resembles that of A. senatoria ; and as both 

 species are variable it is sometimes difficult to determine 

 to which a given specimen belongs. In A. stigma the wings 

 are rather darker and have a greater number of blackish spots, 

 and the hind wings are furnished with a middle band which 

 is heavier and more distinct than in A. senatoria. The male 

 differs from that of the other two species in quite closely 



