ERON I A. By Dr. C. Aurivillius. 
61 
T. subfasciatus Swains. (20 f) The wings in both sexes with sulphur-yellow ground-colour; the orna¬ 
mental spot in the cf little if at all darker than the ground-colour, in the ? orange-yellow to orange-red, 
posteriorly open or only bounded by vein 4, but proximally bordered between the costal margin and vein 4 
by a broad, deep black half-band; distally the ornamental spot has a very broad black-brown border; forewing 
with black median dot; hindwing without markings. Distributed from South Angola and Damaraland to 
Nyassaland, German East Africa and Uganda. 
T. ducissa. The ornamental spot very large, bright orange-yellow, proximally without bordering, 
distally broadly edged with black or brown, the wings above in the cf with yellow, in the ? with white 
ground-colour; forewing with black spot at the end of the cell, ducissa Dogn. is the dry-season form and 
is distinguished by having the underside of the hindwing and of the apex of the forewing almost flesh-coloured, 
with a strong tendency to ochre-brown, f. sulfuratus Karsch (20f, g) has the under surface of the hindwing 
dull yellowish white and the distal border of the ornamental spot deep black; in cellule 3 and in cellule 4 
is placed a black discal dot. German East Africa. 
To this subgroup probably belongs also T. schuberti Stiff'. (14d), which is unknown to me in nature. 
“Ground-colour of the upper surface white; the basal area of the forewing for a distance of 10—12 mm. 
light sulphur-yellow, slightly variegated with black scales; the ornamental spot rather large, in cellule 6 about 
7 mm broad, of iridescent rose-red-violet colour and margined with brilliant orange-brick-red, which colouring 
is extended anteriorly to the costal margin, changes gradually into cinnamon-brown at the distal margin and 
reaches to the middle of cellule 2; proximally the ornamental spot is margined with light sulphur-yellow 
irrorated with black scales; this colour gradually changes into the white ground-colour; on the lower disco- 
cellular is placed a black dot. Forewing beneath whitish, at the base light sulphur-yellow almost to the middle of 
the cell, at the apex clay-yellow-reddish with a small diffuse submarginal spot in each of cellules 2—6 and 8; 
under surface of the hindwing light clay-coloured reddish with small light brownish streaks and specks; from 
the costal margin near the end of vein 8 a straight darker transverse band extends nearly to vein 4.” German 
East Africa. Only a single ? is as yet known. 
11. Sub-Group. 
The single species of this group was formerly regarded as an Eronia, but it is a true Teracolus, differing, however, 
from all the other species in that the lower and middle discocellulars of the forewing form a uniform curve. The sulphur- 
yellow ornamental spot of the cf is very large, completely covering cellules 3—10 as well as the apex of the cell and being 
posteriorly bounded by vein 3. The apex of the forewing is sharp, almost rectangular and its distal margin straight. 
T. lucasi Grandid. (21a), In the cf the ground-colour of both wings is white; the hindwing is without 
markings above, but beneath yellow and more or less spotted and sprinkled with brown; the forewing is 
above margined with black at the apex and at the distal margin to vein 3, beneath it has a black spot at 
the end of the cell, and the apex is coloured and marked like the hindwing. In the ?? the apex of the forewing 
is still sharper and the ground-colour of the upper surface sometimes more or less yellowish, sometimes pure 
white; the black marginal band of the forewing above is broader than in the cf and proximally accompanied 
by 2—4 submarginal spots in cellules 3—6, the median spot of the forewing is larger than in the cf and 
well developed above also; the hindwing above with large marginal spots and smaller submarginal spots in 
2—7 ; the under surface is coloured and marked as in the cf. Madagascar. 
12. Sub-Group. 
The forewing has above a broad black apical band, which begins somewhat behind the middle of the costal margin 
and terminates in the cf at vein 2, but in the ? reaches the hinder angle. The forewing on both surfaces with black discal 
dot, brjt entirely without ornamental spot. The ground-colour above in the cf lemon-yellow, in the $ white. The hindwing 
in the cf above without markings, in the $ with broad black marginal band. On the under surface of the forewing there 
is in the ? a broad black submarginal band, which in the cf is absent or only indicated. The only species belonging here 
comes from Madagascar. 
T. mananhari Ward (20g) is larger and has the hindwing beneath sulphur-yellow to ochre-yellow 
without longitudinal streak, ab. nothus Mob. (20 g) is smaller than the type-form and only differs in having 
a brown longitudinal streak on the under surface of the hindwing. f. flavidus Mob. is the winter form and 
is distinguished by the yellow-brown to red-brown underside of the hindwing and of the apex of the forewing. 
10. Genus: ISronia Bdv. 
Eronia only differs essentially from Teracolus in that veins 8 and 9 of the forewing arise from vein 
7 beyond the middle and that the club of the antenna is longer and less swollen. The species are on an 
average larger than those of Teracolus and differ much among themselves. The Ethiopian species also differ 
subfas¬ 
ciatus. 
ducissa. 
sulfuratus. 
schuberti. 
lucasi. 
mananhari. 
nothus. 
flavidus. 
