36 



CRAMBUS ALBOCLAVELLUS. (Plate I., fig. 9.) 



Crambus alboclavellus Zell., Chil. et Cram., p. 19 (1863). 

 Crambus alboclavellus Zell., Beitr., p. 92 (1872). 

 Crambus alboclavellus Felt, Grass-eating Ins., pp. 77, 88 

 (1894). 



Expanse of wings, 18 mm. Palpi pale fuscous, white be- 

 neath ; head whitish ; thorax luteous. Fore wings brownish 

 luteous, with a broad silvery- white stripe Extending beyond 

 the middle on the costa to the cell on the hind side, where 

 it forms a tooth ; the two sides then run obliquely and meet 

 at an acute angle, the costal line sending out a tooth before 

 meeting the other ; beyond the silvery stripe the dark brown 

 shades off into lighter brown or fuscous, and upon this space 

 rest two white spots, one on the costa and one just before 

 the subterminal line ; hind margin much lighter, especially 

 toward the base. Subterminal line brown, edged outwardly 

 with silvery white, very straight to the angle under the apex, 

 where it forms almost a right angle, then runs straight to 

 the hind margin. A row of four or five black marginal 

 points below the apex. Fringes with bronze lustre. Hind 

 wings very pale ochreous, lustrous ; fringes whitish. 



Habitat. Massachusetts, New" York, New Jersey, Vir- 

 ginia, Ohio, Illinois, Kentucky, Texas, Ontario. Food 

 plant, grass. 



"Egg. Creamy white when first laid, gradually turn- 

 ing to an orange-buff color before hatching. Form, ellip- 

 tical oval; size, .42 mm. by .33 mm. There are about 

 sixteen longitudinal ridges and numerous smaller transverse 

 ridges. 



"Larva, First Stage. Head diameter, .225 mm. ; body 

 diameter, .14 mm. ; length, .625 mm. Head a deep brown, 

 thoracic shield a lighter brown ; body a straw color, with a 

 reddish mark along the middle of the back from the fourth 

 to the ninth segments inclusive. Scattered light-colored 

 hairs occur on the head and body." (Felt.) 



