REVISION OF THE OECOPHORIDAE — CLARKE 237 



Male genitalia. — Harpe without clasper. Anellus with lateral proc- 

 esses. Vesica armed. Gnathos and uncus well developed. 



Female genitalia. — Genital plate partly sclerotized. Ductus bursae 

 with blind sac from ventral surface. Signum present. 



Remarks. — The species neivmanella has been placed in several dif- 

 ferent genera by various authors, but I have found it impossible to 

 include our North American specimens in any of the established 

 genera. 



Walsingham ^° has discussed the confusion arising from the descrip- 

 tion of two species with the name sulphurella by Fabricius, and sup- 

 pressed the genus Oecophora as a result. He was erroneous in this, as 

 brought out by Meyrick,''^ who resurrected Oecophora and separated 

 it from Dasycera. Dasycera Stephens (1829) is synonymous with 

 Dasy census Haworth (1828), the latter being preoccupied by Dasycerus 

 Brongniart (1800). Esperia is therefore the proper generic 

 name for the European species, as pointed out by Fletcher.*^ This 

 name is not available for our American species since the two, n&wman- 

 ella and sulphur ella., are not congeneric. 



In Espeiia the costa of the fore wing is concave, the cell reaches to 

 outer two-thirds, vein 2 is remote from 3 ; 3, 4, and 5 are about equidis- 

 tant at their bases. In the hind wing vein 5 is much nearer to 4 than to 

 6. In the male genitalia the clasper is present and the vesica is without 

 armature. (I have not seen a female of Esperia.) 



The genus Mathildana differs from Esperia by the straight or convex 

 costa of fore wing, the short cell, which does not extend much past the 

 center of the wing, and the approximation of vein 2 to 3. In the 

 hind wing vein 5 is nearer to 6 than to 4. In the male the clasper is 

 absent, and the vesica is strongly armed. 



MATHILDANA NEWMANELLA (Clemens), new combination 



Dasycera neivmanella Clemens, Proc. Ent. Soc. Philadelphia, vol. 2, p. 428, 1864 ; 

 in Stainton, Tineina of North America, p. 252, 1872. — Zelleb, Verh. zool.-bot. 

 Ges. Wien, vol. 23, p. 289, 1873.— Chambers, U. S. Gaol. Geogr. Surv. Terr. 

 Bull. 3, p. 145, 1877. — BEUTENMtJLLEB, in Smith, Catalogue of the insects of 

 New Jersey, p. 357, 1890. — Riley, in Smith, List of the Lepidoptera of 

 Boreal America, No. 5545, 1891.— Dietz, in Smith, Catalogue of the insects 

 of New Jersey, p. 476, 1900.— Busck, in Dyar, U. S. Nat. Mus. Bull. 52, No. 

 5932, 1903. — Meybick, in Wytsman, Genera in^ectorum, fasc. 180, p. 22, 1922. — 

 Gaede, in Bryk, Lepidopterorum catalogus, pt. 88, p. 18, 1938. — IMcDttnnough, 

 Check list of the Lepidoptera of Canada and the United States of America 

 (Part 2, Mlerolepidoptera), No. 8353, 1939. 



^ Walsingham, Biol. Centr.-Amer., Lepidoptera-Heterocera, vol. 4, p. 141, 1912. 

 *T Meyrick, in V. ytsman, Genera insectorum, fasc. ISO, p. 20-21, 1922. 

 *8 Fletcher, Mem. Dept. Agr. India (Ent. sen), vol. 11, p. 8.5, 1929. 



