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 
lines, one median and two lateral. Piliferous dots minute, not con* 
spicuous. Length, 15 mm . 
Pupa. — Of the usual Phycid shape ; mahogany-brown; end of the 
terminal abdominal spine smooth, shining, convex, and ending in a 
stout curved lateral spine on each side. Length, 10 mm . 
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 mm . 
A 
/ 
41. Deltoid larva. 
This pretty caterpillar occurred on the willow at Jack- 
son, K 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 mm . 
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. Leugth, 15 mm . 
43. Teras permntana 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. 
