Publ. 1. XI. 1926. 
OLAPA; OGOA. By Dr. M. Hering. 
137 
S. flavipectus Swh. (20 g). Antennae only apically black, otherwise yellowish; head, body beneath, flavipedus. 
and femora yellow, tibiae and tarsi white. Veins of the wings more intensely yellow than in the preceding 
species, veins 6 and 7 of hindwing on a longer pedicle. Expanse 64 mm. Nigeria. 
S. tavetensis Holl. (= telesilla Drc.) (20 g). Body whitish, head, prothorax and antennae yellowish, tavetendn. 
legs partly in front black. Wings hyaline, varying from whitish to ochreous-yellowish, at the costal margin 
of the forewing more densely powdered, on the cross-vein of the forewing two black dots. East Africa, Kilimanjaro, 
Cameroon. — Larva uni-coloured black with dense greyisli-white hair. Pupa light brown with black antennal 
cases, two rectangular and some smaller ventral spots and a dorsal row and a lateral row each of black dots, 
above and behind covered with long light yellow hair. Pupation in a loose reticular web of yellow hairs. 
S. xanthocephala sp. n. Purely white, densely scaled, antennal pinnae brownish, frons sulphur- xanthoce- 
coloured. + $ types from German East Africa, also Gabun and Cameroon. phala. 
S. sulphureivena Aur. Abdomm beneath purely white; frons, chest, femora, posterior edge of collar, sulphurci- 
and a median line of the thorax, in the forewing the costal margin, veins 1 to 3, the posterior edge of the vena. 
cell, and the fringe are light sulphur-coloured, the rest of the wings transparent white. Expanse: 48 mm. 
— Larva,grass-green, with black dorsal spots, pupa lustrous green with long hair-pencils. Centre of dorsum 
behind red, abdomen with a black median streak. Cameroon. 
23. Genus: Olapa Wlcr. (= Antiphella Wkr.). 
Forewing with or without an accessory cell, in the latter case vein 7 is forked with 8 + 9, 10 and 11 
separate. In case of the presence of an accessory cell, veins 6, 7 and 10 rise from it, as well as the forked 
veins 8 + 9. Vein 4 distinctly separated from 5; in the hindwing vein 8 does not touch the cell any longer, 
4 is nearer to 5 than to 3, 6 + 7 are forked. Palpi in the £ rather rudimentary, hind tibiae only with 
terminal spurs. As much as is known, the genus is purely Ethiopian. 
0. nigribasis Janse is quite similar to flabellaria (20 h), the costal margin being black as far as %, nigribasis. 
with black scales beyond the cell between the veins 4 and 5, 6 and 7. Expanse 46 mm. South Africa. 
0. flabellaria F. (— crocicollis H .-Schaff., temperata Wkr., vecontia Drc.) (20 g, h). Wings thinly flabellaria. 
scaled, in the $ whitish, in the $ more ochreous-yellowish, antenna'e, head, prothorax, and legs ochreous-yellow, 
the rest of the body in the $ white, in the $ likewise ochreous-yellow, the $ besides with a thick anal tuft. 
Abyssinia, South Africa. 
0. melanocera Hmps. is separated from flabellaria (20 h) by black antennae. Ruwenzori, Uganda, melanocera. 
0. furva Hmps. Similar to flabellaria (20 h), but with darker veins, those of the hindwing being less furva. 
dark than those of the forewing. Expanse 48 to 56 mm. South Africa. 
0. nuda Holl. is like furva, but the ground-colour of the wings yellowish-white, veins of both wings nuda. 
equally dark. South and Central Africa. 
0. makala B.-Bak. Wings hyaline milky white, forewing at the cell-end with a blackish spot, hindwing makala. 
with a blackish spot a little before the centre on the hindmargin. Expanse 43 mm. Congo. 
0. argenna Mob. (20 h). Wings likewise hyaline white, body white like the antennal shafts, antennal argenna. 
pinnae yellowish. Tibiae blackish. Madagascar. 
0. imitans Aur. Similar to makala , inside of anterior tibiae and apices of tarsi brownish. Wings white, imitans. 
without markings or with a submarginal dot in the cell 6 of the forewing and 1 c of the hindwing. Expanse 
32 to 39 mm. Gabun. 
0. nigricosta Hmps. Wings semi-transparent white, costal margin of forewing black. Expanse nigricosta. 
38 mm. Cape Colony. — In the East-African race the costal margin is black only as far as 1 / 3 , the expanse 
of the $ is only about 30 mm: minima subsp. nov. (20 h) (2 from Pangani in the Berlin Museum). minima. 
0. fulviceps Hmps. Body white, head, collar, tegulae, and legs orange-yellow. Wings hyaline white, fulviceps. 
costal margin and hind-margin of forewing pale yellow. Expanse 48 mm. Congo. 
24. Genus : €&|»oa Wkr. 
Porewing with an accessory cell, from which vein 6 is distantly separated, 7 with the pedicle of 8 + 9 
on a short pedicle or from the same place, 10 likewise from the apex of the accessory cell, 11 separate. 
In the hindwing vein 8 only shortly touches the cell, 6 + 7 being forked, 4 nearer to 5 than to 3. Palpi 
distinct, hind tibiae only with terminal spurs. 4 species are known, all from Africa. 
XIV 
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