Pttbl. 10. II. 1911. 
A MAURIS. By Dr. C. Aurivillius. 
73 
D. formosa Godm. (23 b) differs from the two preceding species in having the basal part of the forewing formosa. 
almost to the middle and the costal margin of the hindwing bright brown-yellow; the light spots are more 
complete and almost as fully developed as in petiverana ; the hindwing has large spots at the base of cellules 
4 and 5; these spots are absent or only indicated in the two preceding species. German and British East 
Africa — neumanni Bothsch. occurs in Abyssinia and only differs in the darker, yellow-brown ground-colour neumanni. 
of the basal part of the forewing. — Papilio rex is considered to be a mimic of D. formosa. 
2. Genus: Amauris Him. 
This extensive genus is quite peculiar to the Ethiopian Region, where it occurs everywhere. 
The species often occur in great individual abundance and give a characteristic stamp to the fauna. 
They all have black wings with white or yellow markings. The forewing has usually the following light 
markings: 1—2 spots in the cell; 4—9 discal spots, often large, in cellules 1 a —6, 9 and 10, of which, however, 
spot la is usually absent and spot 3 is often placed much nearer to the distal margin than the others; 3—6 
submarginal dots, of which those in cellules lb, 2, 3, 6 und 7 are nearly always present; and several small 
marginal dots, which are often only distinct beneath. The hindwing has usually a light transverse band or a 
large light area, which is sometimes placed at the base, sometimes in the middle or at times even somewhat 
behind the middle and is but rarely entirely absent; in addition there are usually also small submarginal and 
marginal dots. — The larva is cylindrical, with short, fine hairs, and possesses four or five pairs of moderately 
long fleshy appendages, which are placed on the dorsum of segments 2, 3, 5 and 11. — The pupa has a 
very thin shell and is short and thick, obtusely rounded anteriorly and with long, stalk-shaped cremaster; 
the upper surface is strongly glossy. — The butterflies only occur in wooded districts. 
The species may be divided into 5 groups according to the secondary sexual characters of the 
and the scheme of markings. 
Synopsis of the Groups. 
(f 
A. The hindwing of the cf above in cellules 1 b and 1 c long-haired, but without mealy spot. — 
The hindwing unicolorous black-brown without light basal area or light transverse band and only 
with small white submarginal dots. — Cadytis Moore. Vashti Group. 
B. The hindwing of the & above near to the anal angle with a mealy spot divided by vein 1 b, and 
standing out from the ground through its lighter or darker colour. — The hindwing nearly always 
with light basal area or with light transverse band; rarely unicolorous black-brown, but then also 
entirely without submarginal and marginal dots. 
a. The wings with entire, unicolorous, dark fringes. Niavius Group. 
b. The wings with undulate or dentate, irregularly white-spotted fringes. 
a. The hindwing with light basal area or with a transverse band, which is placed in or before 
the middle and covers the middle of the cell. 
1. The light area of the hindwing reaches almost to the base of the cell and is usually pure 
white, but when yellowish, indistinctly defined distally. Eyialea Group. 
2. The light area of the hindwing is sharply defined on both sides, yellow or rarely whitish, 
and does not usually reach the base of the cell. Eclieria Group. 
b. The hindwing with a yellow transverse band of almost uniform breadth, which is placed 
behind the middle and only covers the apex of the cell (= Bereihis Mo(rre). Pltaedon Group. 
Vashti Group. 
The only species of this group is the largest of the Ethiopian Danaids. 
A. vashti Btlr. (23 d). The forewing is 48 — 58 mm. in length with two large connected discal vashti. 
spots in 1 b and 2 nearly in the middle of the hindmargin and with smaller, separated or almost separated 
discal spots (subapical spots) in cellules 5 and 6; the cell is unspotted or has at most 2 white dots; 5 — 6 
submarginal dots are present; the hindwing has only submarginal dots. Distributed from the Niger to the 
Congo and Aruwimi and common in many districts. 
Niavius Group. 
The species which belong here are at once distinguished from all the others by the entire, unspotted fringes of the 
wings. The hindwing above usually without submarginal and marginal dots. 
XIII. 
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