REVISION OF THE OECOPHORIDAE — CLARKE 139 



Larva. — Length 9-11 mm. Head and cervical shield light brown, 

 the former broadly suffused laterally and posteriorly with dark 

 brown ; epicranial sutures dark brown ; ocelli light brown surrounded 

 by a blackish area. Underside of head yellowish brown. The shield 

 is bisected by a narrow light-green or yellowish longitudinal line; 

 posterior half of shield dark brown; beyond this, on dorsal half, 

 prothorax whitish. Thoracic and abdominal segments apple green 

 with a broad suffusion of whitish around the dark brown tubercles 

 and on the posterior edges of the segments. Setae long, yellowish 

 brown proximally, whitish distally. Anal plate pale green with 

 whitish posterolateral edges. Thoracic legs yellowish brown with 

 lighter annulations at the joints. 



The larva is a leaf miner forming a blotch mine. In the early 

 stages frass is ejected from the mine through a small silken tube, 

 which is constructed at one edge of the mine, usually parallel to 

 the midrib of the leaf. In the later instars the larva folds a leaf 

 and completely mines out the spongy material between the upper and 

 lower epidermal layers. The larva remains in this large, roomy mine 

 until ready to pupate. Pupation occurs in sand or soil at the base 

 of the plant. 



The larvae are abundant in the Grand Coulee, where nearly all 

 plants of Sphaeralcea mMnroana, which are numerous, are heavily 

 infested. The leaves are badly discolored owing to the thoroughness 

 with which they are mined. 



ry/>e.— U.S.N.M. No. 52076. 



Type locality. — Park Lake, Grant County, Grand Coulee, Wash. 



Food plant. — Sphaeralcea munroana (Dougl.) Spach. 



Remarks. — Described from the $ type, 5 $ and 4 9 paratypes 

 (V-15 to VI-12, 1935, J. F. G. Clarke). Paratypes in United States 

 National Museum, Canadian National, and H. H. Keifer collections. 



MARTYRHILDA NIVALIS (Braun) 



Plate 25, Figures 150, 150a ; Plate 40, Ftgltre 231 



Agonopteryx nivalis Braun, Proc. Acad. Nat. Sci. Philadelphia, vol. 73, p. 10, 1921. 



Agonopteris nivalis (Braun) McDunnough, Check list of the Lepidoptera of Can- 

 ada and the United States of America (Part 2, Microlepidopteru), No. 8419, 

 1939. 



Depressaria nivalis (Braun) Gaede, in Bryk, Lepidopterorum catalogus, pt. 92, 

 p. 334, 1939. 



Labial palpus white except for some light-brown scaling on the out- 

 side of second segment. Antenna fuscous. Head, thorax, and fore and 

 hind wings white; slightly beyond base of fore wing, in inner angle 

 and along inner margin, a faint light-brown shade ; two discal spots, 

 obliquely one above the other, at basal third, another, larger, white- 

 centered discal spot at end of cell, a series of spots along costa and 



