886 
ARCTONOTUS; AMPHION; PROSERPINUS. By Dr. M. Deattdt. 
lucidus. 
terlooi. 
vega. 
nessus. 
floridensis. 
gaurae. 
juanita. 
oslari. 
56. Genus: Arctonotus B.sd. 
Three species remarkly similar to Geometridae and very closely allied to the following two genera 
Euproserpinus aud Proserpinus, but separated by the peculiar woolly hair. Antennae thinner basally and 
apically, strongly compressed. Palpi short; tibiae with long spines, a short apical spine at the end of the anterior 
tibia. Pulvillus absent, paronychium rudimentary. 
Type: A. lucidus Bsd. 
A. lucidus Bsd. (98 D d). This peculiar and rare species has a dark olive green body and a similarly 
coloured basal and median band of the forewing, the latter band not reaching to the costal margin, because a 
more greyish antemedian band is united here with a similar postmedian band, so that the dark median band 
ends rounded here; the two said bands are finely edged with whitish, the posterior one is traversed by a yellowish- 
white stripe on vein 4; marginal area broad light olive grey. Hindwing reddish cinnamon, darker towards the 
margin, with a blackish-brown marginal band and broad light fringe. Early stages unknown. The imagines 
fly in early spring, from January to March, and come to the lantern late at night. From Washington to Arizona. 
A. terlooi Ediv. is very similar to lucidus from which it only differs in claret-coloured hindwings and the 
absence of the green basal band on the forewing. Apparently extremely rare, hitherto only known from 
Mazatlan (Mexico). 
A. vega Dyar is only known to me from the very insufficient description in Dyar’s List of N. A. Lep.: 
forewing as in terlooi, but with a dark green basal band, thus probably as in lucidus. Hindwing as in P. juanita , 
of a bright orange with a sharply defined black marginal band. Expanse of wings: 54 mm. New Mexico. 
57. Genus: Ampliion Hbn. 
The porrect palpi end taperingly; eyes ciliated; antenna filiform, slightly thickened behind the middle 
with a long thin hook at the end. Anterior tibiae finely spined; paronychium present. The abdomen ends in a 
tripartite anal tuft in the <J, more truncately in the 9. Distal margin of forewing with a round convexity in 
the middle, concave below and above it. Only 1 diurnal species: 
A. nessus Or. (= ocypete Houttuyn) (98 D d). Fore wing brown with a blackish-brown narrow oblique 
band in the middle, with fine light transverse lines before and behind it, the posterior one angular in the centre 
and crossed here by a dark blotch, similar spots subapically and before the anal angle. Hindwing rusty red, 
yellowish-white at the costal margin, with a blackish-brown marginal band and yellowish-wliite fringe crossed 
by dark. Abdomen with a yellowish-white belt at the distal edge of the 4th segment, ventrum with 2 yellow 
belts on the 5th and 6th segments. Southern specimens are coloured darker than northern ones. — floridensis 
Clark is a still darker and more monotonous summer breed from Florida with a narrower band of the hindwing. 
Larva brown, with darker dorsal spots and oblique brown lateral bands, the 1st to 3rd segments with dark 
brown dorsal and subdorsal lines; horn pointed and short. It lives on Epilobium, Vitis and Ampelopsis. Atlantic 
States from Canada to Florida, to the west as far as the Mississippi. 
58. Genus: .Proserpinus Hbn. 
Very similar to Amphion ; distinguished by the more clubby antenna with a short, suddenly thinned 
terminal hook, more strongly spined tibiae, the anterior tibia with an apical spine, and an obliquely placed 
cross-vein on the hindwing, whilst it is rectangular to the two cell-veins in Amphion. The type of the genus: 
P. proserpina Pall, is palaearctic, America has 4 similar species in its northern part. 
P. gaurae Abb. db Sm. (= circae Ediv.) (98 D d) has narrow slender wings and is light olive green with an 
oblique dark median band and a likewise darkened marginal area; apex crossed by light. Hindwing orange-red, 
more brownish basally with a dark red-brown marginal band. Ventral side and base of hindwing beneath likewise 
cinnamon-red. — Larva green with red interrupted subdorsal lines and similar oblique lateral bands and 
sublateral spots. Horn short and pointed, black. It lives on Gaura biennis. Georgia to Texas. 
P. juanita Stkr. (= gaurae Clem.) (98 D d) is very similar to gaurae, but larger and of a much brighter 
green and orange colour, with broader wings, the median band broader. Hindwings with a sharply defined 
black marginal band. The basal area of the fore wing beneath is orange, whilst that of the hind wing is olive 
green like the ventral side. Texas, Colorado. — oslari R. cfc J . is the lighter subspecies from Arizona, the green 
