LEPIDOPTERA OF NEW YORK AND NEIGHBORING STATES 519 



Montreal, Quebec, to New Jersey and Illinois. New York: Peru, Batavia, 

 Lestershire, Karner (type), Brooklyn. 



2. A. populi Walker. Fore wing light gray, strongly reticulate, the reticulation 

 a little denser in the antemedial region. Hind wing strongly reticulate on outer 

 half of wing, with checkered fringe. No dark hair at the base. 60 mm. 

 July- 

 Hudson Bay; Hymers, Ontario. 



3. PRIONOXYSTUS Grote 

 (Xystus Grote, not Hartig; Xyleutes, in part) 



Similar to Acossus; sexes unlike; the male much smaller, with the outer margin 

 of the hind wings nearly straight; female with bipectinate antennae; vestiture 

 slightly shorter, practically of plain scales on top of thorax. (Fig. 294.) Larva 

 with tubercle iii of metathorax decidedly smaller than ii a+b. 



1. P. robiniae Peck. Fore wing nearly white, slightly translucent, irregularly 

 striate with black; the middle of the wing covered by an irregular darker patch, 

 especially in the male. Hind wing of male bright yellow, the basal half and costa 

 above RI blackish; outer margin narrowly black. Female with hind wing smoky 

 gray, the reticulation of the under side showing through faintly. 50-75 mm. 



(plagiatus Walker). (H 41:11, $; 10, ?.) 



Female variety reticulatus Lintner lacks the blackish patches in the median 

 area of the fore wing, which is only a little more heavily reticulate there; is a 

 little smaller and more translucent and is commoner southward. In female aber- 

 ration quercus Ehrman, the female hind wing is almost as bright yellow as that 

 of the male. 



Generally distributed. New York: Plattsburg, Peru, Ogdensburg, Brockport, 

 Buffalo, Ithaca, Oneonta, Albany, Staten Island; Long Island, common at Brooklyn. 

 One Ithaca specimen is practically var. reticulatus Lintner. 



Not very rare, but easily overlooked,- the moth being short-lived and not flying 

 to sugar, or often to light. It is most easily found resting on the trunk of its 

 food plants. Larva boring in many trees, preferring soft woods; perhaps most 

 often in poplar and locust; often doing serious damage to unhealthy trees. 



2. P. macmurtrei Guerin. Fore wing with reticulation mostly transverse, in 

 the female with one well-marked stronger stria from costa to anal angle just 

 beyond the cell; no dark shading in median area. Hind wing of male nearly trans- 

 parent, with a very slight yellow tint, blackish along the inner margin. 30, $ 

 60-75 mm. (querciperda Fitch). 



June. Larva boring in oaks. Rare in collections. 



Widespread but apparently quite local in distribution, west to Minnesota. 



New York: Buffalo, Ithaca, Schoharie, Crugers, Newburgh, New York City, 

 Staten Island; Brooklyn, Woodhaven, and Newtown, Long Island. 



The two species have been much confused, especially in the larva, making food 

 records a little uncertain. 



Subfamily ZEUZERINJE 



Egg ovate, flat, smooth; larva with cervical shield extremely large, rough; last 

 spiracle raised, as in Carposina; crochets slightly irregular, but nearly uniordinal, 

 Pupa with maxillae meeting in middle line beyond end of labial palpi; maxillary 

 palpi not separately chitinized, separated by a partial suture; head with a charac- 

 teristic toothed projection. Imago with male antennae pectinate only on basal por- 

 tion, the pectinations curved and forming a sort of eye-cap; vestiture deeper; base 

 of M 3 transverse, and intercalated cell rectangular. Veins of hind wing, especially 

 R and M,, widely spaced. 



