Delias acalis

Delias acalis, the redbreast Jezebel, is a medium-sized butterfly of the family Pieridae, that is, the yellows and whites.

Redbreast Jezebel
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Pieridae
Genus: Delias
Species:
D. acalis
Binomial name
Delias acalis
Godart, 1819
Synonyms

Delias thysbe

Description
For a key to the terms used, see Glossary of entomology terms.
Dorsal view
Ventral view

Delias acalis resembles Delias pasithoe in both sexes; the differences are as follows: Upper, forewing: the white spot at apex of cell replaced by an upper and a lower grey scaled spot that crosses the discocellulars, which are black; the postdiscal series of hastate (spear-shaped) spots converted into broad greyish diffuse streaks of which the streak in interspace 3 is shifted more inward than the others. In the rf the broad subbasal greyish streaks in interspaces 1 and 2 and in the cell are longer than in the female. Hindwing black; basal area to middle of cell deep vermilion, traversed by the black veins; interspaces la, 1 and posterior medial portion of 2 powdered thickly with greyish-white scales in the male; remainder of interspace 2 bright yellow; interspaces 3 to 8 with broad diffuse grey streaks that do not reach the termen, the streaks in interspace 5 extend into apex of cell; in female similar, but interspaces 2 to 5 with still broader yellow streaks, of which those in interspaces 4 and 5 cross over the discocellulars into the apex of the cell. Underside: similar to the upperside, the grey markings paler, almost white; hindwing in both sexes with the basal vermilion patch extended to the base of the dorsal margin: humeral angle at base of wing with an ochraceous spot; apex of cell and broad streaks in interspaces 1 to 8 yellow fading to yellowish white anteriorly: the veins narrowly black, which colour broadens triangularly at their apices and so forms anteriorly a more or less irregular terminal black margin. Antennae, head, thorax and abdomen as in D. pasithoe.[1]

Distribution

S.China;Nepal; Sikkim; Bhutan; Assam; Burma: Tenasserim; extending to Java and the Malay Peninsula.

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References
  1. Bingham, C.T. (1907). The Fauna of British India, Including Ceylon and Burma. II (1st ed.). London: Taylor and Francis, Ltd.
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