[The species group Colias arida Alpheraky, 1889, adelaidae Verhulst, 1991, baeckeri Kotzsch, 1930 and stoliczkana Moore, 1878. Description of a new subspecies of Colias adelaidae. (Lepidoptera: Pieridae).] Lambillionea, 99(1)(Tome 1), Mars 1999: 41-48. 43 [Zoological Record Volume 135]