Publ. 25. X. 1929. 
SAMIA. By Dr. M. Draudt. 
721 
undulate-dentate, irregular. In the neuration hardly any difference; palpi somewhat shorter; on the $ antennal 
joints the anterior two pectinations are shorter than the posterior two. Larvae not essentially different from 
the general type, but distinguished from those of Philosamia by only the 2nd, 3rd, and 11th rings bearing 
fleshy thorns, the other rings only punctiform tubercles. The cocoon is suspended on a stalk and mostly wrapped 
up in leaves. 
Type: C. promethea Dru. 
C. promethea Dru. (129 b). The $ is black with a but very feebly traceable postdiscal line, in the promethea. 
yellowish-grey margin with a black undulate line which is transformed into small spots on the hindwing; apex 
of forewing above the black eyespot dusted with dark red, with a short white notched line; no discal spots. 
The larger $ is more purple brown, both the lines of the forewing distinct, like the discal spots, the spot on the 
forewing is mostly very small or obsolete, ^-specimens without any discal spot are named: — caeca Ckll. caeca. 
Larva bluish-green, the fleshy thorns coralline. It chiefly lives on Laurus, Liriodendron, Liquidambar, and 
cherry. The silk of the cocoon cannot be used. Predominantly occurring in the Atlantic States, from South 
Canada to Florida, to the west through the Mississippi Valley as far as the eastern frontier of the great prairies. 
The $ of promethea has been hybridized with cinthia-$\ the product has the colour of cynthia, with the discal 
spots and shape of promethea- $. 
C. arsgulifera Wkr. (129 c) is very similar, the browner, with both the transverse lines, the posterior angulifera. 
one of which is distally dusted with whitish in a variably broad extent. The $ is much more variegated, ground¬ 
colour from cerise to orange-yellow, with much larger discal spots, those on the $ hindwing mostly obsolete. - 
Carolina Jones is smaller and lighter and has yellow discal spots and transverse bands, the area outside of it Carolina. 
dusted with golden brown. Beneath the transverse lines are purple red instead of black. Southern Carolina. 
— securifera M. & W. (129 c) the types of which we can figure is perhaps only an especially light form of securifera. 
Carolina, in the $ the ground-colour is much lighter brown, in the $ quite light yellow. The statement of the 
patria: Central America is sui’ely wrong. Larva similar to that of promethea, but with fine black belt-markings 
before the last moult; it chiefly lives on the tulip-tree; the food-plant of Carolina is stated to be Magnolia glauca. 
5. Genus: Samia Hb. 
Extraordinarily similar to the preceding genus and externally characterized by larger species with 
broad, rounded wings with non-diaphanous discal spots and without the distinct sexual dimorphism of Callosamia. 
The $ antennae are still somewhat shorter combed than in the latter, the legs are covered with very dense 
woolly hair. Larvae on the 2nd to 4th rings with one pair each of more ball-shaped shortly spined fleshy cones 
and a single one on the 11th ring, whilst the other rings bear longer and thinner small fleshy thorns exhibiting 
a few bristly hairs on the tips. The cocoon is not suspended, but fastened on the twig longitudinally. — The 
following hybridizations have hitherto been ascertained: cecropia -j- gloveri $, cecropia $ -j- rubra Columbia $ 
-j- cecropia $ and reversely, moreover promethea + gloveri. 
Type: S. cecropia L. 
S, cecropia L. (101 a) is one of the best known moths. Rather invariable, olive brown with 2 transverse cecropia. 
bands which are bordered with whitish on the averted sides, and with crescentiform discal spots, the one of 
the forewing being more or less tinted red. Marginal area yellowish-grey with a large black spot inwardly light 
blue, then again black-ringed, between 6 and 7; subterminal area more or less suffused with red. Larva light 
green, cones and pectoral feet yellow, the fleshy thorns on the 2nd and 3rd rings orange red or coralline. It 
lives on various trees and shrubs such as roses, willows, maple, lilacs etc. Distributed over the whole Atlantic 
coast of North America to the west as far as the great prairies. — An artificial form bred by an experiment of 
temperature is named: — macula Reijf which shows a submarginal row of black spots also on the fore wing, as macula. 
on the hindwing, cecropia can be hybridized with all the 3 other species of Sarnia. 
S. gloveri Stkr. (101 a) is distinguished by a more cerise or Pompeyan red interior half of the wings, gloveri. 
the whole subterminal area being yellowish-grey, strewn with dark. — reducta Neum. is a smaller stunted form reducta. 
from the high mountains of Colorado. The larva is very similar to that of gloveri and likewise polyphagan. 
Rocky Mountains from Alberta and Assiniboia to the south as far as Arizona, gloveri can easily been hybridized 
with cecropia and also with Columbia, the product is also found in nature. 
S. Columbia Sm. (101 a) is smaller on an average, of a duller colouring, not so bright red as the preceding Columbia. 
species, especially the postdiscal line is outside not at all shaded with red. Larva on larches. From the Northern 
Atlantic States. -— nokomis Brodie is the form from Manitoba, of a brighter colonring, with a larger white spot nokomis. 
on the hindwing. — wenonah Brody, from Pelly, North-Western Territory, is smaller and still brighter, the wenonah. 
colours more distinctly contrasted; the only extremely northern specimen known is presumably only an 
intensely marked nokomis. 
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