REVISION OF THE OECOPHORIDAE — CLARKE 187 



DEPRESSARIA MULTIFIDAE Clarke 



Plate 3G, Figures 1D9, 199a; Plate 48, Figure 288 



Dcpressaria multifidae Clarke, Can. Eiit., vol. 05. p. 85. pi. 4, 1933; vol. 66, 

 p. 179, 1934. — McDuNNouGH, Check list of the Lepidoptera of Canada and 

 the United States of America (Part 2, Microlepidopteva), No. 8394, 1939.— 

 Gaede, in Bryk, Lepidopterorum catalogus, pt. 92, p. 288, 1939. 



Male genitalia. — Harpe broad, sparsely covered with fine hairs; 

 cucullus pointed; clasper slender, fingerlike, curved toward cucullus; 

 sacculus narrowly folded with a prominent basal process armed with 

 long stout spines. Anellus a sclerotized plate longer than wide, with 

 sides convex; posterior and anterior margins concave. Vinculum 

 rounded. Aedeagus longer than harpe, slender, pointed; sharply 

 curved at distal third, less strongly so at basal third ; base of aedeagus 

 with a small bulbous process dorsally and a long, broad, shovel-shaped 

 process ventrally. Transtilla a broad, lightly sclerotized band with 

 moderately developed hairy lobes. Socii very small, mainly indicated 

 by hairs. 



Female genitalia. — Genital plate narrow with a pair of shallow, 

 cupped sclerites anteriorly. Ostium a longitudinal slit, wider at 

 anterior end. Ductus bursae with a sharply curved sclerotized portion 

 near its middle; inception of ductus seminalis just before ostium. 

 Bursa copulatrix large with a well-developed signum near posterior 

 end. 



Alar expanse, 17-21 mm. 



Type. — In the United States National Museum. 



Type locality. — Snake River, Whitman County, opposite Clarkston, 

 Wash. 



Food plant. — Lomatium grayi Coult. and Rose. 



DistrihiUion. — Northwestern United States. 



United States records 



Idaho: Lapwai, Nez Perce County, 23 ^ 5 , 20 ? 5 ( 21-26-V-35 ) . 



Washington: Penawavv'a, Whitman County, 6 $ $, 4 9 9 (3-12-V-35) ; Snake 

 River, Whitman County, opposite Clarkston, 6 5 (J , 10 9 2 (May dates 

 1932-34) ; Truax, Whitman County, 5,299 (4-9-V-35) ; Godman Springs, 

 Blue Mountains, Columbia County, altitude 5.700 feet, 2 SS, 4 9 9 

 (23-31-VII-35). 



(All the above specimens were reared from larvae collected by the writer.) 

 Remarks. — Although the male and fem.ale genitalia were character- 

 ized in the original description, it seems advisable to make necessary 

 corrections at this time. They have been correctly redescribed above. 

 The name of this insect is unfortunate and resulted from a mis- 

 identification of the host. The plant, upon which the larva feeds, 

 grows to a very large size on the sandy or gravelly bars of the Snake 



