Dark blue purple forewings and much lighter lustrous azure hindwings.
This species is recognisable at once by the different blue of the two wings, The genitalia are specialised, with very strong short scimitar-shaped hooks ; the clasps have bilobed extremities, the outer lobe having a somewhat pointed tongue-shaped tip, and the inner lobe being spatulate, the incision being marked and moderately deep ; the penis is of medium size, with a globose orifice.
[4]
Subspecies
A. m. metamuta Peninsular Malaya, Sumatra
A. m. hilda (Evans, 1957) Borneo
References
^Hewitson, W.C. 1863–1878. Illustrations of diurnal Lepidoptera, Lycaenidae. London, van Vorst, x + 229 pp, 107 pls.
^Seitz, A., 1912-1927. Die Indo-Australien Tagfalter Grossschmetterlinge Erde 9
^Seki, Y, Takanami,Y.and Otsuka, K 1991. Butterflies of Borneo Vol. 2, No. 1. Lycaenidae. Tobishima Corporation, Tokyo
^Bethune-Baker, G. T., 1897. Four new species of Arhopala. Entomologist's monthly Magazine 33: 202-205. This article incorporates text from this source, which is in the public domain.