WILLOW CATERPILLARS. 



575 



much darker, and the palpi are twice as broad. The moth was kindly 

 identified by Prof. C. H, Fernald. * 



Larva. — Body of the usual form, tapering from near the head to the end. Head of 

 the usual size, not quite so broad as the prothoracic segment ; green, slashed vertic- 

 ally, and mottled with large and small brown or jet-black spots. 

 Prothoracic segment a little swollen ; the shield not striped like the 

 rest of the body. Body with narrow alternating light and dark green 

 stripes ; brown along the back, and inclosing a large round green spot 

 on each segment ; the brown portion with three interrupted green JJi!,\li^ 



lines, one median and two lateral. Piliferous dots minute, not con- 

 spicuous. Length, 15™". 



Pupa. — Of the usual Phycid shape; mahogany-brown; end of the iJiAli 

 terminal abdominal spine smooth, shining, convex, and ending in a 

 stout curved lateral spine on each side. Length, 10'"'". 



Moth. — Body and fore wings dark gray, with brick-red scales and 

 bands. Palpi very broad, especially the second joint ; dark gray ; 

 vertex of head light gray, with dark scales ; antennae blackish. Pro- 

 thoracic scales and shoulder tippets (patagia) dull brick red ; middle 

 (disk) of thorax gray. Fore wings dark dusky gray, with scattered 

 pale-grayscales; base of wings dull brick-red; a broad, diffuse band 

 of the same color crosses the basal fourth of the wing ; on the outer 

 fourth of the wings is a similar broad, diffuse, dull brick-red band, 

 sending a diffuse longitudinal stripe towards the basal band ; an 

 incomplete transverse pale-gray line, curved outward in the middle 

 of the wing, borders the inside of the outer reddish band. Costal edge 

 dusky, the reddish bands not reaching it. Fringe of the same dull 

 slate color as the hind wings. Expanse of wings, 20""». 



41. Deltoid larva. 



This pretty caterpillar occurred on the willow at Jack- 

 son, N. H., September 10. 



Fig. 192 -Wil- 

 low leaves 

 sewed togeth- 

 er by Merop- 

 tera pravella. 

 Wilder del. 



Larva. — Body slender, tapering toward both ends, with two pairs of 

 abdominal legs besides the anal pair, and situated on the fifth and 

 sixth abdominal segments. Head and body pea-green, with two double, more or less 

 broken, whitish yellow lines, each double line becoming single on the thoracic seg- 

 ments. A concolorous slender spiracular line. Thoracic feet pale amber, almost 

 greenish; abdominal feet green. Length, 16''^'". 



42. Deltoid larva. 



This caterpillar occurred on the willow August 15 at Brunswick, Me. 



Larva. — Body slender; four pairs of abdominal legs, the first pair smaller than the 

 others, grass-green ; a broad dorsal dark band edged with a yellow line. The setif- 

 erous tubercles large, black. Head with twelve conspicuous black dots, one pair of 

 which are larger than the others. Length, IS"""". 



43. Teras permxitana Duponchel. 



This moth, which is common to both Europe and the United States, 

 has been found by Mr. Coquillett to feed on the willow, living between 

 two or three leaves which are fastened together with silken threads. 



