54 



INSECTS INJURIOUS TO GARDEN AND ORCHARD CROPS. 



and the sugar-beet webworin, L. sticticalis Linn., injurious species of 

 similar habits which have been treated in reports of this Department 

 in rather recent years. 



DESCRIPTIVE. 



The moth. — The moth is illustrated at a of figure 12. It is gray in color 

 with the fore-wings marked and mottled as shown. The wing expanse 

 is about five-eighths of an inch (18 to 21 mm ). The following technical 

 description is copied from Dr. Hulst's paper (1. c. ) : 



Palpi, head, thorax, and abdomen fuscous; fore wings broken fuscous and fuscous 

 cinereous; the basal space with a black spot medially, two white lines cross the 

 wings, the first extra basal edged with dark fuscous, the outer after the typical Botis 

 pattern ; a dark brown spot annulate with white at reniform ; a dark brown sub- 

 triangular apical patch, and a subterminal white line; marginal line black, broken; 

 hind wings, even fuscous; beneath, lighter, lines obsolete, reniform indistinct. 



The larva. — The full grown 

 larva, figured at b and c of 

 the accompanying illustra- 

 tion, measures a little up- 

 ward of half an inch in 

 length, being about six times 

 as long as wide. The form 

 is subcylindrical, tapering 

 toward each extremity, wid- 

 est near the middle — the 

 third, fourth and fifth ab- 

 dominal segments, which are 

 nearly equal. The general 

 color is dull opaque grayish 



Fig. 12.— Sellula undalis: a, mature moth; b, larva, lateral yellow Or yellowish gray, 

 view; c, larva, dorsal view ; d, pupa — all three times nat- gfT>jr)f»(J with broad SOme- 

 ural size (original). ■,-,*'• 



what irregular brownish- 

 purple, longitudinal bands, which extend from the second thoracic to the 

 terminal or anal, segment. These are bright and conspicuous on the 

 dorsal, and more feebly indicated on the ventral, surface. The dorsal 

 stripes are five — a moderately wide medial one, a broader medio-lateral 

 on each side, and a dor so lateral one, of about equal width with the 

 median one, also on each side. On each side below are two lateral 

 lines, faint, and interrupted toward the ends of each segment; a similar 

 ventro lateral line and a much fainter interrupted median line. 



The head is black and shining, the V-inark well indicated, the cervical 

 or thoracic shield is shining light, somewhat purplish, gray, and is rather 

 variably marked with brown, which forms each side of the median stripe 

 of the second thoracic segment, two irregular longitudinal dark brown 

 patches, darkest and widest toward the posterior margin. On each 

 side above the spiracle of that joint is a shorter dark patch. Near 

 this there are sometimes two or three small dark rounded spots. The 



