Piibl. 15. IX. 1931. 
THOSEA. By Dr. M. Hering. 
713 
Th. obliquistriga sp. n. (89 b). Forewing dark brownish-grey, with an indistinct dark central dot; a obliquv- 
very oblique straight blackish line narrowly bordered with light inside extends from the costal margin before striga. 
the apex to the centre of the inner margin. Hindwing somewhat lighter grey. Anterior tibia with a silvery 
white spot at the end. Expanse of wings: 32 mm. Reported from Cochinchina, but this habitat seems to me 
to be doubtful, and 9 types in the Berlin State Museum. 
Th. curvistriga sp. n. (89 b). Similar to obliquistriga, . forewing browner, the oblique line as in the curvistriga. 
preceding species, but convex towards the margin, the costal margin of the forewing straighter. Expanse of 
wings: 25 mm. South China. $ type from Mahn-tsi-shan (Dr. Mell, Berlin State Museum). 
Th. lateritia sp. n. (89 b). Forewing reddish-brown like the body, with a black central dot and a straight lateritia. 
subterminal line from the costal margin before the apex to the tornus. Hindwing blackish-grey. Fringe indis¬ 
tinctly traversed by light. Under surface reddish-brown. Expanse of wings: 17 mm. Penang. £ type in the 
Tring Museum. — Separated from the similar bisuroides (89 c) by a straight subterminal line. 
Th. vetusta Wkr. (89 c). Forewing dark violettish-brown, with a silvery white line which is basally vetusta,. 
convex and extends from the apex to the inner margin before the middle, bordered with whitish towards the 
base, a whitish crescentiform spot below the apex, central dot black. Hindwing blackish-brown. Expanse of 
wings: 28—35 mm. From Malacca to Borneo. The following species was hitherto regarded as the §; in the 
British Museum, however, there is a 9 from Sarawak, which corresponds entirely with the <$, though the central 
dot of the forewing is absent, which, however, occurs also in the <§. Unless there be a dimorphism of the 9, 
the following form may be considered a distinct species. 
Th. biguttata Wkr. (89 c). Oblique line of the forewing as in vetusta, straighter, the space from it to the biguttata. 
base uniformly whitish-grey, the whitish-grey marginal area extends to the tornus, central spot black, very 
large, hindwing light grey. Expanse of wings: 30—35 mm. -Java to Borneo. I have not yet seen any <3* of the 
species. 
Th. bisuroides sp. n. (89 c) is similar to Th. bisura, but smaller. Pectinations of $ antenna very much bisuroides. 
shortened on one side, whereby the species forms a transition to Iragoules (p. 709). Red-brown, the basal two 
thirds of the forewing more or less black, only light at the inner margin, with a black subterminal line ending 
at the tornus. Expanse of wings: 18 mm. South China. $ type from Canton; 9 type from Wang-shan, taken 
by Dr. Mell in June and September (Berlin State Museum). 
Th. castanea Wil. Reddish-brown; forewing somewhat darker towards the base, a dark diffuse castanea. 
transverse line from the costal margin before the apex slightly curved to the margin at vein 2. Expanse of 
wings: 23—25 mm. Eormosa, in July. 
Th. imitabilis sp. n. (89 c). Similar to Th. cana (89 c), the interior transverse stripe of the forewing more imitabilis. 
oblique, the exterior one quite straight. From light grey to dark grey, with an oblique dark transverse line 
from % of the inner margin to the centre of the costal margin and a straight transverse line from the costal 
margin before the apex to the tornus. Hindwing grey. Expanse of wings: 24 mm. India. $ type from Pedong 
(Sikkim) (Berlin State Museum), paratypes from Darjeeling and Sikkim in the Tring and British Museums. 
Th. ferreogrisea Hmps. (89 a). Iron-coloured grey, mixed with brown, forewing iron-grey, with a ferreogrisea. 
blackish subbasal and antemedian line, both connected by dark longitudinal rays, a black cross-vein dot and 
a black submarginal line as far as vein 2, dark shading below the cell and at the margin. Hindwing grey. 
Expanse of wings: 24 mm. Ceylon. 
Th. recta Hmps. (90 g) differs from jerrogrisea in the basal area of the forewing (except a longitudinal recta. 
stripe below the costal margin) being dark brown, the costal margin mottled dark brown almost to the apex, 
a dark central dot, submarginal line and marginal shadow absent, the shadowy spot below the cell-end large, 
widened to the tornus. Hindwing unicoloured dark grey, fringe not speckled. Expanse of wings: 21—25 mm. Ceylon. 
Th. cana Wkr. ( = transversata Wkr.) (89 c). Body and forewing brownish ash-grey; basal third defined cana. 
by a dark somewhat oblique line which is distally bordered with light and does not reach the costal margin, a 
brownish almost straight transverse line from the costal margin before the apex to the tornus, marginal area 
behind it more ash-grey. Hindwing grey. Exjianse of wings: 25—30 mm. — Larva green, with a yellowish- 
white dorsal stripe and 4-rows of spinecl appendages; it lives on Cassia etc. India, Ceylon. 
Th. tripartita Mr. (89 c) is separated from the preceding species by the vertically cut off brown basal tripartita.. 
area. Dark subterminal line and often dark central line present, the former meets the margin above the tornus. 
Expanse of wings: 22—26 mm. —- Larva green, with dorsal and lateral rows of blue spots and spined appendages, 
on Ricinus and other plants. India. 
Th. discipunctata sp. n. (89 c) is very similar to tripartita, but forewing quite monotonously greyish- disci- 
brown, the basal area not entirely darkened, but only defined by a dark oblique line. Cross-vein with a large punctata. 
dark central dot. Subterminal line a little nearer to the margin. Without any whitish brightenings. Expanse 
of wings: 20 mm. Palli Hill. Bandora, in June, <3* type in the Tring Museum, taken together with tripartita. 
Th. sybilla Swh. Body purely white. The anterior two thirds of the forewing suffused with brownish- sybilla. 
red, inner-marginal third white. A brown spot at the cell-end, another spot below the centre, some brown discal 
dots. Hindwing and under surface yellowish-white. Expanse of wings: 13 mm. Siam, in January. It was not 
before me. (It presumably belongs to another genus.) 
X 
89 
