24 
RACHEOSPILA. By L. B. Prout. 
punctu- 
laria. 
juncto- 
linearia. 
hudsonaria. 
unilinearia. 
splendi- 
daria. 
viridicaria. 
albaria. 
pul- 
cherrima. 
intensaria. 
caeru¬ 
lescens. 
aemularia. 
the larvae on willow. It is clearly related to the larva of rubrifrontaria, but brown, not green; from the 
2nd instar onward to the 5th and last, the head is rounded bilobed, the body flattened, with “wing-shaped, 
double pointed projections on the sides of joint 5 to 9”, those on 6 to 8 becoming relatively stronger in 
the later stages, bent upward. 
N. punctularia Barnes <£• Me. D. (3 c) differs from darwiniata in its large purple-brown cell-dots and 
in the abdominal maculation; purplish spots with small white centre replace the narrowly red-ringed white 
spots, and the 2nd segment is brown, not green. California. 
N. junctolinearia Graef (3 b) is unmistakable on account of the very peculiar form of the lines of the 
hindwing which meet behind the middle instead of continuing to the hindmargin. Western States, described 
from Colorado. 
N. hudsonaria Taxyl. was at first considered by its author “to represent mimosaria (5 a) in the west”, 
but we have given it the position which he assigned later. Face rose-pink, less white at lower edge than in mimo¬ 
saria. Abdomen above greenish anteriorly, whitish posteriorly, segments 1 to 3 with white spots. Wings bright 
green, with both lines developed; postmedian on forewing straight, rather more oblique than termen, not 
quite reaching costa, on hindwing more proximal than usual, strongly incurved behind median vein as if to 
run baseward, but disappearing before crossing the 2nd median. Alberta. 
N. unilinearia Taxyl. is near hudsonaria but a trifle larger (approaching the size of darwiniata [3 c]), 
the antemedian line obsolete, the postmedian more distally placed, so that if continued to the hindmargin 
on the hindwing it would reach the middle, not the base. British Columbia: Kaslo (type) and Victoria. 
N. splendidaria Grossb. is a beautiful and very distinct species, characterized especially by the course 
of the antemedian line of the forewing, which is extremely oblique inward, reaching the hindmargin near 
base. Forewing apple-green, costal margin rather broadly flesh-tinged, terminal line deep red, fringes pink 
distally, the white lines broad. Hindwing paler and more weakly marked, the lines somewhat as in oregonensis. 
Arizona: Palmerlee. 
N. viridicaria Hulst likewise has the hindwing more whitish green than the forewing. No red markings. 
Fore wing pea-green, somewhat striated with white, costal edge and fringe white; lines strong, straight, the 
antemedian from y 4 costa, forming with the wing-margins an equilateral triangle, the postmedian from % costa, 
parallel with termen. Hindwing greenest between the lines; antemedian rounded, at costa near the base, post- 
median broader, not sharply defined distally. Colorado. — albaria Grote, from Arizona, is a still paler form, 
the hindwing white, thinly scaled, with only a slight tinge of green. 
N. pulcherrinia Barnes & Me. D. (= naidaria Swett) (3 c) is a rather delicately built species, somewhat 
erratic in the structure of the hindleg, which is not dilated and has the proximal spurs closely approximated 
to the terminal. Further distinguished from the species with similar fore wing ( delicata , etc.) by the whitish 
hindwing. California. 
N. intensaria Pearsall is said to be nearest to viridicaria but with the abdomen ornamented dorsally 
with white, red-edged spots, that of the 1st segment large and triangular, others on the 3rd, 4th and 5th 
segments decreasing in size. Wings darker sea-green than in the other Nemoria, with white strigulation; fore¬ 
wing costally and hindwing anally somewhat produced; costal edge of forewing salmon-pink; lines strong, on 
forewing at % and %. Utah: Eureka. 
N. caerulescens Prout (3 b) is a small species (23 mm), of a bright blue-green, comparable in shape 
and markings to albilineata (3 d), but with the hindwing slightly paler than the forewing (especially at base), 
costally whitish, postmedian line broader, the white sj)ot of the 1st abdominal tergite followed by 2 or 3 smaller 
whitish sjjots, without any reddish patch. New Mexico. 
N. aemularia Barnes & Me. D. is not a typical Nemoria as the 9 palpus is longer, more as in Racheo- 
spila. Placed here, however, because “it appears to be otherwise obviously related to viridicaria and caeru¬ 
lescens'' (3 b). Abdomen above basally green, the rest whitish, with a reddish brown dorsal interrupted line 
(G) or broad band (2). Wings pale green with strong cream-whitish striations, antemedian line faint, post- 
median broad, almost parallel with distal margin. Size of, caerulescens or scarcely larger. Arizona. 
3. Genus; liaclieospila Guen. 
Palpus variable, in the $ longer than in the G and with the 3rd joint more or less elongate. Antenna 
pectinate in the G■ Hindtibia with 4 spurs, in the G nearly always dilated, with hair-pencil and terminal process. 
Forewing generally smooth-margined, 1st subcostal from cell, 1st median from cell or connate. Hindwing 
rounded or bluntly angled, costal vein near base approximated to subcostal or anastomosing slightly, 2nd sub¬ 
costal stalked, 1st median separate to stalked. 
