ZENILLIA AND ALLIED GENERA — SELLERS 49 



Thorax black covered thinly with light-gray pollen marked by five 

 black mesonotal vittae; four postsutural dorsocentral niacrochaetae ; 

 scutellum testaceous covered with gray pollen, three pairs of marginal 

 scutellars and one strong decussate apical pair turned backward, disk 

 covered with erect hairs and bearing one pair of discal scutellars; two 

 sternopleural macrochaetae ; legs black, tibiae brownish or yellowish 

 with base and apex inclined to be blackish on ventral side; front tibia 

 with two median posterolateral bristles ; midtibia bearing two median 

 anterolateral bristles of about equal length, one inner ventral bristle; 

 hind tibia ciliate, with one or two longer bristles; wing grayish hyaline, 

 third vein usually with two bristles at base ; squamae white. 



Abdomen black, subshining, covered with gray pollen except dorsum 

 of first segment, a narrow apical border on remaining segments, and 

 an obscurely marked median dorsal vitta; gray pollen more pro- 

 nounced basally and laterally on dorsum of segments; first segment 

 with a pair, second with two pairs, and third with a row of marginal 

 macrochaetae ; discal portions of second and third segments with erect 

 bristles, some of those on third approaching weak macrochaetae in 

 size ; fourth segment covered with erect bristles about one-half size of 

 marginal macrochaetae on third segment; sides of first, second, and 

 third segments rufous, females usually black but sometimes with a 

 rufous spot on sides of second and third segments; hypopygium 

 brownish black, inner forceps curving inwardly and tapering to a fine 

 point (when viewed from behind distinctly separated), outer forceps 

 stouter and decidedly shorter. 



Length 7 to 10 mm. 



Type and allotype localities.— Hell Canyon, Manzano National 

 Forest, N. Mex. 



Distribution— Maine 5, New Hampshire 10, Massachusetts 9, On- 

 tario 1, New York 2, New Jersey 2, Maryland 1, Virginia 1, North 

 Carolina 1, Indiana 1, Texas 1, New Mexico 2, Utah 3, Arizona 1, 

 Idaho 1, California 1. Additional published records not duplicated 

 above: Vermont (Johnson), Rhode Island (Schaffner and Griswold), 

 New York 2 (West). 



Type.— Male, U.S.N.M. No. 25697. 



Hosts. — Estigmene acraea (Drury) 113; Diacrisia virginica (Fab- 

 ricius) 25; unidentified Arctiidae 8; PhragmatoUa assimilans var. 

 franconia Slosson 1. 



Remarks. — The description is based on an examination of the type, 

 allotype, two male paratypes, and one female paratype, Hell Canyon, 

 N. Mex. (Townsend) ; one male and two female paratypes, Indian 

 Spring, N. Mex. (Townsend) ; one female paratype, Great Falls, Va. 

 (Townsend) ; two male paratypes, Tempe, Ariz. (Caffrey) ; one male 



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