154 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



larva hatches in 2 or 3 weeks, burrows down to the roots, and starts 

 a gallery beneath the bark, which is gradually enlarged and serves as 

 a domicile until maturity in early summer of the second year. The change 

 to pupa takes place in a tough cocoon constructed in the soil and near 

 the surface, apart from the gallery. The moths emerge three to four 

 weeks after pupation, in temperate zones late in July or in August, in 

 warmer climates late in May and in June. The insidious work of this 

 borer often is not recognized as the cause of serious injury and loss in 

 vineyards. 



VITACEA POLISTIFORMIS form SEMINOLE (Neumoegen) 



Sciapteron seminole Neumoegen, Ent. News, vol. 5, p. 330, 1894. 



Memythrus seminole Beutenmuller, Mem. Amer. Mus. Nat. Hist., vol. 1, pt. 6, 



p. 253, pi. 30, fig. 22 (female), 1901. 

 Paranthrene seminole McDunnough, Check list of the Lepidoptera of Canada and 



the United States of America, pt. 2, No. 8801, 1939. 



Female. — A specimen from Florida (the type) differs from typical 

 poUstiformis only in the lighter brown on the forewings, the thorax, 

 and abdomen. Another female, from Dallas, Tex. (March 24, 1909, F. C. 

 Bishopp), is chestnut-red on head, thorax, abdomen, and posterior 

 tibiae; the forewings are brown-black and the discal mark on the hind- 

 wing is broader. The early date of emergence, March 24, is unusual. 

 The type from Florida is not dated, but the usual dates for polistijormi'! 

 are late July and August. 



The name seminole is recognized in this paper for an extreme color 

 form within the range of poUstiformis, as has been done in the case of 

 Paranthrene dollii form castanea. It is not a well-defined segregate, how- 

 ever, intergradations connecting it with the typical form. The geo 

 graphical limits of the two are elastic. 



Type. — Female. In the United States National Museum. From Florida. 



VITACEA POLISTIFORMIS HURON, new form 



Plate 28, Figure 167 



Male and female. — Forewings opaque, pale rufous, streaked dark with 

 brown and buflf, beneath shaded with pale yellow. Hind wings trans- 

 parent, margins rufous. Abdomen with conspicuous annulations, segment 

 2 narrowly and segment 4 broadly ringed with pale yellow posteriorly ; 

 all segments shaded transversely with black, chestnut-brown, and buff, 

 this being most pronounced on the basal segments, at the sides and be- 

 neath. Posterior tibiae light brown. 



Distribution. — Michigan, Wisconsin, Illinois, Indiana. 



Type. — U.S.N.M. No. 56847. Described from male type from Pent- 

 water, Mich., and female paratype from Miller, Ind. 



Remarks. — This form has been collected in numbers by Alexander 

 Wyatt and Emil Beer of Chicago, 111., who generously have shared their 



