112 PAPERS ON CEREAL AND FORAGE INSECTS. 



from a larva in one of the rearing cages. Mr. Parks records obtain- 

 ing an adult in his cages on July 7, and observed another adult in the 

 alfalfa fields near the Salt Lake City Field Laboratory on August 2. 

 On August 23 one of these moths was found under a board lying 

 along a fencerow adjoining an alfalfa field near Salt Lake City. 



FOOD PLANTS. 



Mr. Koebele 1 records the larva of this species as feeding on cab- 

 bage, barley, and elder (Sambucus sp.) at Los Angeles, Cal. ; on 

 dock {Rumex sp.) at Piedmont, 2 Cal., and records collecting a 

 female while ovipositing and also larva? while feeding on JIaJva 

 rotundifolia at Alameda, Cal. TTe have collected the larva? and 

 reared adults from red clover, alfalfa, and garden peas at Pullman, 

 Wash. 



DESCRIPTIONS. 



THE EGG. 3 



" Egg hemispherical, rounded at the base, the apex with a rounded depression. 

 Finely creased vertically ; color pale yellow." 



THE LARVA. 



First instar (?). — Body slender, pale creamy white, with long black hairs; 

 head conspicuously large, shining black ; thoracic legs blackish ; only three pair 

 of prolegs, situated on abdominal segments 5, 6, and 9, prolegs concolorous with 

 body. Length, 1.8 mm. 



Second instar. — Body segments 7 and 8 enlarged, 9 small; color pale green, 

 marked with cream-colored longitudinal lines as follows : A subdorsal line, 

 very fine and wavy ; a stigmatal line, broader, straight, sharply defined dorsally, 

 and fading out ventrally; segments ornamented with transverse row of black 

 papilla? bearing black hairs; head cream-color ; thoracic legs cream-color, with 

 tips of claws ferruginous. Length, 3 mm. to 5 mm. 



Third instar. — Body papilla? white, with black dots at base of hairs; three 

 longitudinal lines in subdorsal space, the more dorsal one fine, clearly defined 

 and wavy, the middle one broad and indistinct, and the third one about as 

 fine as the first but less wavy; stigmata on first thoracic and first to eighth 

 abdominal segments, pale, with oval black margins, that on eighth abdominal 

 segment much larger than others ; mandibles pale reddish brown ; eyes with 

 series of six black dots arranged in a ventrally directed semicircle near the 

 base of the antenna?. Length, 6 mm. to 9 mm. 



Fourth instar, — Body darker green, papilla? in two transverse rows, the 

 papilla? of one row alternating with those of the other ; head green, paler than 

 body, mandibles and palpi brownish; thoracic legs infuscate; marginal hooks 

 of prolegs ferruginous-brown. Length, 10 mm. to 14 mm. 



1 Bureau of Entomology Notes, No. 95 K. 



2 Bureau of Entomology Notes, No. 389 K. 



3 Entomologica Americana, vol. 6, p. 14, 1890. 



