REVISION OF PEORIINAE AND ANERASTIESTAE 43 



Description. — Frons about tkree-foiirths as long as diameter of 

 eye, orange laterally, lighter dorsaUy; labial palpi Avith basal segment 

 white, second and third segments orange brown on outer sides, white 

 on inner sides; antennae white, finely pubescent, bearing tuft of scales 

 on basal segments of shaft; occiput and vertex white behind antennae, 

 occiput brown laterally, patagia and tegulae Hght orange. 



Forewing vdih broad white band anterior to cell, costa margined 

 basally mth dark brown; white band bordered posteriorly with 

 narrow dark brown band dividing distally to trace K4 and Mi; promi- 

 nent white band tracing cubitus and M2, broadest near lower outer 

 angle of cell; Cui and Cu2 traced with mixtm-e of brown and white; 

 R2 from close to R.3+4, sometimes short stalked. Hind^\-ing with 7 veins; 

 M3 and Cui from point or short stalked. 



Male genitaha Avith medial process of uncus well sclerotized, 

 rounded, bearing pair of caudomesally directed spines. Gnathos mth 

 medial process strongly projected. Valvae tapering to point. 



Female genitaha mth eighth abdominal segment heavily sclerotized, 

 tapering posteriorly. Anterior apophyses strongly divergent; posterior 

 parallel, pointed at base. 



Key to the Species of the Ostreella Group Based Upon External 



Characters 



M2+3 forked; white band extending from cell to costal margin .... ostreella 



M2+3 fused; white band extending half way from cell to costal margin, bordered 



anteriorly with light orange poohella 



Arivaca ostreella (Ragonot), new corabination 



Figures 19, 53, 86, 121, 158 



Saluria ostreella Ragonot, 1887, p. 18; 1889, p. 117. — Smith, 1891, p. 85.— 

 Ragonot, 1901,p. 362. — Hulst, 1902, p. 438. — Barnes and McDunnough, 

 1917, p. 149. — Hampson, 1918, p. 102. — McDunnough, 1939, p. 36. 



Saluria ostrella [sic] Hulst, 1890, p. 211. 



Peoria discostrigella Dyar, 1904, p. 115. [New synonymy.] 



Diagnosis. — ■ The stalked condition of M2+3 distinguishes both 

 sexes from poohella. Males are easily recognized by the pectinate 

 antennae. 



Description. — Labial palpi about 4)2 times as long as diameter of 

 eye; male antennae pectinate. 



Fore^ving with cell brownish orange; Ai faintly traced on distal 

 third; A2 and A3 basally traced with mixture of white and brown, 

 A2 usually broadly so; ground yellow or Ught orange posterior to cell; 

 11 veins; M2+3 stalked. Hindmng light brown in both sexes. 



Male genitaha with uncus bearing heavy mediodorsal triangular 

 plate, sharp pointed caudally. Juxta round, with deep V-shaped 



285-934—68 4 



