Acraea egina

Elegant acraea
The imago of A. e. egina in flight and feeding at a flower, Ghana
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Nymphalidae
Genus:	Acraea
Species:	A. egina
Binomial name
Acraea egina (Cramer, 1775) [1] [2]
Synonyms
Papilio eginaCramer, 1775 Acraea (Acraea) egina Papilio rudolphinaHerbst, 1792 Papilio persephoneFabricius, 1793 Acraea zidoraGodart, 1819 Acraea kharaGrose-Smith, 1889 Acraea egina f. contrariaGrünberg, 1910 Acraea egina f. albaEltringham, 1913 Acraea egina intensaStoneham, 1937 Acraea egina f. tenuimarginatusStoneham, 1937 Acraea egina f. rubristriatusStoneham, 1937 Acraea egina bellehuiCarcasson, 1961 Acraea arecaMabille, 1889 Acraea harrisoniSharpe, 1904

Acraea egina, the elegant acraea, is a species of butterfly in the family Nymphalidae with an extensive range in sub-Saharan Africa.

Distribution

This species can be found in Senegal, Gambia, Guinea-Bissau, Guinea, Bénin, Burkina Faso, Sierra Leone, Liberia, Ivory Coast, Ghana, Togo, Nigeria, Cameroon, Equatorial Guinea, Gabon, the Republic of the Congo, the Central African Republic, Angola, the Democratic Republic of the Congo, Sudan, Uganda, Ethiopia, Kenya, Tanzania, Malawi, Zambia, Mozambique, Zimbabwe, and South Africa. ^[3]

Habitat

The habitats of this species mainly consists of dry forests and savannah, but it also prefers clearings and open areas in the rainforest.

Description

The wingspan of Acraea egina can reach 60–65 millimetres (2.4–2.6 in). Wings are basically brick red, with black spots on both forewings and hindwings and a quite large black margin on the hindwing upperside. These butterflies are closely mimicked by Pseudacraea boisduvali and by Graphium ridleyanus in the shade of color, in the cut of the wings and in the pattern of markings.

The larvae of Acraea egina are whitish with black rings and black tubercules, while the pupae are pinkish brown. They feed on Adenia lobata and Rawsonia species.

Description in Seitz

Imago – mounted specimen

Larva in Eltringham (1912)

For a key to the terms used, see Glossary of entomology terms.

A. egina Cr. (54 d) is much larger than perenna and has the wings quite differently shaped but is very similarly coloured in the male. In this sex the forewing is blackish, in the middle somewhat transparent, and has at the hinder angle in 1 a and 1 b a large yellow-red spot, which, however, does not extend beyond vein 2; hindwing above black at least as far as vein 2, then with broad yellow-red transverse band and broad, unspotted black marginal band, somewhat dentate at the veins, the discal dot in 4 placed nearer to the distal margin than the rest. Fore wing beneath almost as above, but lighter and more thinly scaled; hind wing beneath light reddish with red spots at the base and at the marginal band and between the large, free black dots more or less greenish yellow; marginal spots large, quadrate, greenish yellow; collar red; last half of the abdomen light yellow. In the female the ground-colour of both wings is black grey without red-yellow spots, but with an indefinite whitish subapical band on the forewing.

• Larva whitish yellow with two black longitudinal lines on each side; head and spines black. Pupa whitish with very fine black markings. Senegal to Angola, Nyassaland and Uganda.
• harrisoni E. Sharpe. In the borderlands between the West and East African subregions there usually occur also in this species transitions to the East African race. These are distinguished by having the red-yellow colour of the forewing present not only in 1 a and 1 b, but also as fine longitudinal streaks first in 2 and then also in the other cellules; the under surface of the hindwing is for the most part suffused with orange-yellow; the discal dots are sometimes as large as in egina, sometimes much smaller, particularly on the hindwing, ab. contraria Grunb. (= kiwuensis Grunb.). Rhodesia; Nyassaland and on the shores of the Victoria Nyanza.
• areca Mab. (54 e) is the East African race and following the rule which obtains in almost all African Acraeids is characterized by having the red-yellow colour of the forewing more extended, more or less completely covering the cell and the base of cellules 2 to 6; the under surface of the hindwing is for the most part orange-yellow. In the female the ground-colour is more yellowish than in the type-form. South-East Rhodesia, Nyassaland, German and British East Africa. ^[4]

Subspecies

• Acraea egina egina — Senegal, Gambia, Guinea-Bissau, Guinea, Burkina Faso, Sierra Leone, Liberia, Ivory Coast, Ghana, Togo, Nigeria, Cameroon, Equatorial Guinea, Gabon, Congo, Central African Republic, Angola, Democratic Republic of the Congo, southern Sudan, Uganda, Ethiopia, western Kenya, northern Zambia
• Acraea egina arecaMabille, 1889 — Kenya, Tanzania, Malawi, Mozambique, eastern Zimbabwe, South Africa: Limpopo Province
• Acraea egina harrisoniSharpe, 1904 — coast of Kenya
• Acraea egina pembanusKielland, 1990 — Pemba

Taxonomy

It is a member of the Acraea egina species group – but see also Pierre & Bernaud, 2014 ^[5]

References

1. Cramer, P. [1775-1776]. De Uitlandsche Kapellen voorkomende in de drie waereld-deelen Asia, Africa en America. Amsterdam & Utrecht. 1: [vi], xxx, 16 pp., 155 pp.
2. "Acraea Fabricius, 1807" at Markku Savela's Lepidoptera and Some Other Life Forms
3. "Afrotropical Butterflies: Nymphalidae - Tribe Acraeini". Archived from the original on 2012-08-10. Retrieved 2012-05-31.
4. Aurivillius, [P.O.]C. 1908-1924. In: Seitz, A. Die Großschmetterlinge der Erde Band 13: Abt. 2, Die exotischen Großschmetterlinge, Die afrikanischen Tagfalter, 1925, 613 Seiten, 80 Tafeln (The Macrolepidoptera of the World 13). Alfred Kernen Verlag, Stuttgart. This article incorporates text from this source, which is in the public domain .
5. Pierre & Bernau, 2014 Classification et Liste Synonymique des Taxons du Genre Acraea pdf

External links

• Images representing Acraea egina at Bold
• Images representing Acraea egina bellehui at Bold
• Acraea egina egina Archived 2020-01-27 at the Wayback Machine at Pteron
• Learn About Butterflies ^[usurped]
• Mimicry in butterflies