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Trimen’s Acraea (''Acraea trimeni'') is a butterfly of the Nymphalidae family. It is found in only in the arid Savannah in the northern North Cape and the western part of the Orange Free State. The wingspan is 43–49 mm for males and 45–55 mm for females. Adults are usually on wing from October to March with a peak in late October. There might be two or continuous generations per year.〔Woodhall, S. Field Guide to Butterflies of South Africa, Cape Town: Struik Publishers, 2005.〕 ==Taxonomy== The status of this species is uncertain. ''Acraea trimeni'' was described as a form or aberration of ''Acraea barberi''. Aurivillius (1898) is uncertain as to whether ''trimeni'' is an aberration or variety of ''barberi'' Trimen. Eltringham (1912)〔Eltringham, H.,1912 A Monograph of the African species of the Genus Acraea, Fab., with a supplement on those of the Oriental Region.''Transactions of the Royal Entomological Society of London'' Volume 60, Issue 1, pages 1-369, July 1912 (pdf )〕 retains the rank of aberration of ''barberi'' Trimen. Van Son (1963)〔Van Son, G., 1963 The butterflies of southern Africa. Part III. Nymphalidae: Acraeinae. ''Transvaal Museum Memoirs'' No. 14:ix 1-130.〕 considers ''trimeni'' as a subspecies of ''zetes''. In his phylogenetic analysis of 1992-1993, Henning considers the Aurivillius ''description'' as a good species 〔Henning, G.A. (1992): Phylogenetic notes on the African species of the subfamily Acraeinae. Part 1. (Lepidoptera: Nymphalidae). ''Metamorphosis'' 3(3):100-114; Part 2. Metamorphosis 4 (1):5-18; Part 3. Metamorphosis 4 (2):53-68.〕 but ''trimeni'' may be a synonym of ''barberi''. Eltringham's text reads "In the example named ab. ''trimeni'' by Aurivillius the apical yellow is more pronounced, and the forewing hind marginal black is almost absent. Aurivillius includes under this an example from Rehoboth (German W. Africa) which is now in the Staudinger collection. If this is really ''barberi'' then the ''hypoleuca'' of Trimen must also be a form of ''zetes'' which indeed is highly probable. Extremely different in appearance though it is. I have in fact only kept ''hypoleuca'' separate from ''zetes'' because it is so far a unique example and bears no locality. The example labelled ''barberi'' in the Staudinger collection differs very little from it. (See remarks under A. hypoleuca)". 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Acraea trimeni」の詳細全文を読む スポンサード リンク
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