ZYGAENOSIA. By Dr. M. Draudt. 
157 
Z. fuliginosa Rothsch. <$ quite light sooty black; the disc of the forewing semi-diaphanous sooty grey, fuliginosa. 
Length of forewings: 14 mm. Snow Mountains, New Guinea, October till December. 
Z. sinapis Rothsch. $ with black antennae; head, thorax, and abdomen reddish mustard-yellow, sinapis. 
Forewings sooty mustard-yellow, veins and margins black. Hindwings dark sooty grey, the costal area dark 
mustard-yellow. Length of forewings: 15 mm. Snow Mountains in Dutch New Guinea, October till December. 
Z. divisa Rothsch. antennae dark grey, head and thorax creamy white; abdomen greyish white divisa. 
with a yellowish anal tuft. Forewing with an oblique, creamy white basal half, a blackish-brown spot at the 
proximal margin near the base, and a bodly marked, larger rusty spot, somewhat like a cloud between the 
subcostal and the proximal margin; distal half dark violet chocolate-brown with lighter streaks and a white 
zig-zag streak through the centre. Hindwings creamy white. Length of forewings: 7 mm. Biagi, Mambara 
River, British New Guinea; at an altitude of 5000 ft. 
Z. albigrisea Rothsch. J: head, antennae and thorax as well as abdomen slate-coloured; forewings albigrisea. 
creamy white; the distal two fifths brownish drab. Hindwings creamy-white with drab fringes. Length of 
forewings 10 mm. Biagi on the Mambara River, British New Guinea; at an altitude of 5000 ft., taken in March. 
Z. truncata Rothsch. <$: head, antennae and thorax black; on the tegulae an orange-red spot; abdomen truncata. 
orange-red with a black anal tuft. Forewing w r ith orange-red three basal fifths of the basal, a black stigma, 
and some small black spots at the costa; the two distal fifths black, apex and border as far as vein 3 sharply 
cut off. On the hindwing the basal two thirds are orange-red, the distal third blacker. Length of forewings: 
12 mm. Astrolabe Bay in German New Guinea. 
Z. nigrorufa Rothsch. Both sexes quite black, the two basal fifths of the forewings and the three nigrorufa. 
basal fifths of the hindwings orange-red. Length of forewings: 12,5 mm in the <$, 14 mm in the $. Kumusi 
River in the north-eastern part of British New Guinea, July till August. 
Z. variabilis Rothsch. The appears in 3 principal forms, either of which occurs with or without an variabUis. 
antemedian black line. The typical form is quite black, the basal half of the forew'ing except the basal third 
of the costa orange-red, the basal three quarters of the hindwing likewise orange-red. — A second form 
has an orange-red head and thorax, and a third is quite red, only the abdomen being black, a broader or narrower 
postmedian zigzag line on the forewing black, as well as a series of antemarginal black spots; the margins of 
both wings black. In all the three forms a black, antemedian zigzag line may be present or absent. Length 
of forewings: 8 to 10 mm. Mysol, New Guinea, January till February. 
Z. fumosa Rothsch. Body above black, beneath more or less mixed with yellow. Wings unic-olorous fumosa. 
olive-brownish black, diaphanous; the nomenclatural type, originating from the Geelvink Bay, is beneath 
sooty black. —- subsp. flaviventris Rothsch. from Biak has an ochreous-yellow under surface of the abdomen. — flaviventris. 
subsp. inferna Rothsch. has besides ochreous-yellow legs, forehead and first antennal joint, only the tibiae are inferna. 
above partly blackish. From Obi. 
Z. salomonis Rothsch. has semi-diaphanous, blackish wings more densely scaled at the margins; the salomonls. 
forewing is yellow at the extreme base and at the basal part of the costal margin; hindwings more densely 
scaled, sooty black. Body yellow, in the typical form above on the abdominal rings scaled black. From Guadal- 
canar. — In subsp. Isabella Rothsch. from Isabel and the Shortland Islands this black scaling is absent. Isabella. 
Z. fumigata Pagenst. is blackish-brown on its body and wings, the wings are diaphanous with darker fumigata. 
veins and an indistinct yellowish subbasal spot on the forewing, which may also disappear. New Pomerania. 
Z. basalis Rothsch. Wings diaphanous sooty-black, veins and margins more densely scaled; at the ba.salis. 
base of the forewing a large, yellow spot occupying the first third of the proximal margin and reaching upward 
the median. Head, underside of the first antennal joint, abdomen and the whole under surface inclusive of the 
palpi and legs are black; a spot on the hindliead, the thorax, on each side of the first abdominal segment 
one spot and the greatest part of the 7th abdominal tergit black. -— D’Entrecasteaux Archipelago and 
from the Milne Bay (Brit. New Guinea). 
Z. assimilis Rothsch. differs from basalis by a ray of the yellow colour at the base of the forewing assimilis. 
extending also into the discocellular and also above the median for a short distance; besides the first abdominal 
ring is above almost quite black. — Salawatti. 
