1054 
ROSEMA. By Dr. M. Draudt. 
apicalis. 
ornata. 
astoriae. 
bifiria. 
paraphora. 
inornata. 
inchi.au. 
i nversa. 
jocosa. 
strigosa. 
luculenta. 
brucei. 
multnoma. 
albosigma. 
specified. 
1. apicalis Wkr. (= van Fitch., indentata Pack.) (159 a). A small, most variable species, somewhat 
like the palaearctic pigra. Body and forewing dark ash-grey, with a short straight subbasal line and an oblicpie 
anterior transverse line which meets the posterior one on vein 1, the latter line terminating at the costal margin 
with a small white spot which is generally bordered with rusty brown outside; apical third darkened still more; 
a subterminal row of small dark spots. Hindwing mouse-coloured, often with an indistinct postmedian trans¬ 
verse line. - ornata Grt. & Rob. (= incarcerata Bsd.) is a slightly larger and paler form of the Eastern States. 
astoriae Hy. Echo, is still larger and lighter, and it lacks the rusty brown spot at the costal margin alto¬ 
gether. Nebraska, Oregon, Montana. bifiria Hy. Edw. is a very large contrasting form from California; the 
anterior transverse line is quite straight. Larva yellowish-brown, with a grey tinge and grey hair; the 4th 
and 11th segments are often darker and more reddish, with yellowish tubercles bearing bristles. It lives on 
trembling-poplar and willow, and pupates between leaves. Widely distributed throughout North America, 
from Alaska to California and to the Pacific Coast. 
I. paraphora Dyar is a large light grey species, marked like apicalis, but the lines are more undulated 
and somewhat differently situate, the oblique line strongly bent between the exterior and interior lines; ground¬ 
colour light grey, clouded darker grey, especially in the basal area, in the “V” below vein 2; very little rusty 
brown at the costal margin. Expanse of wings: 31—38 mm. Arizona, Colorado. 
J. inornata Neum. (159 b) is much larger than apicalis, the largest and lightest of all the species, marked 
almost exactly like the form ornata of apicalis, of a somewhat more yellowish tint, probably only a southern- 
more race. South Arizona, Mexico. Larva unknown. 
I. inclusa Him. (= americana Harr.). Light ash-grey with yellowish ochreous tints and dusted with 
brown, the lines similar as in the allies, but whiter, very straight and bordered with brown outside and form¬ 
ing a pointed “V”; a subterminal row of small brown spots. Hindwing with an undulated postmedian line. 
Atlantic States. Larva yellow with a more or less greenish tint, with 3 black dorsal longitudinal lines and 
3 lateral ones on each side, the 4th and 11th segments with blackish prominences bearing bristly warts. It 
li es between leaves of poplars and willows, which have been spun together. — inversa Pack. (=' palla French) 
is smaller and darker, greyer, the subterminal row of spots less distinct. Canada, Nebraska, Colorado. — Jocosa 
Hy. Edw. is a small form, of a more yellowish ochreous tint, the hindwing without a postmedian line. Florida. 
I. strigosa Grt. is smaller and duller brown than apicalis with a faint lilac tinge; the subbasal line is 
distinct and it forms a sharp angle on vein 1, the second line is much more incurved; separated from all the 
other species by a large irregular whitish ochreous spot adjacent to the outer line at the costal margin and 
extendig half-way to the apex. Hindwing darker than in apicalis. Larva yellowish with 3 indistinct red dorsal 
stripes and 3 deep red lateral stripes; abdominal legs flesh-coloured, head dull black; on Populus tremuloides. 
Northern Atlantic States. — luculenta Hy. Edw. is an insignificant form lacking the dark brown stripe on 
the mesothorax; the light costal spot is more distinct and somewhat more obliquely situate. 
I. brucei Hy. Edw. (159 a) has a whiter ground-colour with bright brown markings; a whitish subbasal 
line bordered with brown, somewhat dentate in the middle, and a straight antemedian line; a postmedian 
brown shadow through which the purely white postmedian line extends, widened at the costal margin; a sub- 
terminal row of brown spots, the middle spot in a brown shadow. Hindwing mouse-coloured. — multnoma 
Dyar (== alethe Neum. <b Dyar) is a darker form. The larva is purple black with a broad yellow dorsal band 
containing 3 fine black interrupted dorsal lines; the yellow colour turns more bluish-grey in the course of 
growth; tubercles partly orange; the prominences on the 4th and 12th segments are deep black, a broad lateral 
orange band is more or less interrupted by black. It lives on willows. Oregon; Washington; British Columbia. 
1. albosigma Fitch (159 a) is somewhat larger, less yellowish than inclusa , with a slight lilac tinge, 
distinguished by a large dark apical spot bordered inside by the acutely angled postmedian line which forms 
a distinct white spot at the costal margin; all the 3 whitish lines are rather parallel. Hindwing very light, without 
a transverse line. — specifica Dyar is a much lighter form from Colorado. The larva is straw-coloured with 
3 grey or light reddish-brown dorsal lines and a broad lateral stripe, all more or less interrupted. It lives on 
poplars and willows. Northern United States. 
157. Genus : Itosema Wkr. 
A group of green Notodontidae of a very homogeneous exterior, but of varied shapes. I combine the 
genus Moresa Wkr. with Rosema Wkr., because I cannot discover any essential anatomical difference. They 
are small to medium-sized insects with very differently shaped wings; apex of forewing generally rather pointed, 
the distal margin often concave, often with a projection between veins 5 and 6, so that two concavities are 
