An Adobe pdf version of the Eswatini Butterflies Checklist as at August 2013 is available here (click to view/download - approx 13 MB).

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563  Euchrysops osiris
      Osiris smoky blue
   Malolotja Mlawula

View photos in Biodiversity Explorer

Distribution: southern Arabia, Madagascar, the Comoro Islands and Africa, south of the Sahara.
Wingspan: males 22-29 mm females 25-30 mm
Foodplants: Rhynchosia totta, Vigna tenuis and Vigna unguiculata.
Flight Period: Mainly from September to November and from February to April, but may be found year round. There are two main generations per year.

11 records, from 5/22/1990 to 3/25/2017

Distribution, food plant and other information from Woodhall, S. Field Guide to Butterflies of South Africa, Cape Town: Struik Publishers, 2005; Butterflies of South Africa's National Botanical Gardens, An illustrated checklist, compiled by Christopher Willis and Steve Woodall; Ivor Migdoll's Field Guide to the Butterflies of Southern Africa, Struik Publishers, 1987, with additional information from Pennington's Butterflies. Larval food plants quoted are restricted to those species recorded from Swaziland. Numbers for each species are from Pennington's Butterflies.