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SUBFAMILY
ACONTIINAE |
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Acontia olivacea Hampson (Plate 2, Figs 93, 94) Cilix olivacea Hampson, 1891 Illustr.
typical Specimens Lepid. Het. Colln. Br. Diagnosis. The forewing facies is diagnostic (though of the generic type), with pale bone-coloured margins, that of the costa very broad that surround an irregularly triangular dark green area, the green tinge extending to the paler parts, particularly the costal band, and the dark area being divided by a fine pale line postmedially and irrorated in places by turquoise scales. Taxonomic note. Sulawesi material has been described as A. subolivacea Hacker & Holloway in Hacker et al. (2008). This species has the reniform triangular mark of the forewing whitish rather than bluish grey. The aedeagus vesica (slides 20546 (attributed erroneously to olivacea in Hacker et al.), 21241) is more spherical with shorter spines set on more distinct circular basal plates, and there are differences in the shape of the valve. The female has an irregular, elongate corpus bursae with some central scobination, rather than a large, ovate one with coarse scobination that is larger centrally. However, there are some indications that, after mating, the corpus bursae may get stretched and elongated by the spermatophore (Fig 94 is slide 21230, an ‘unstretched’ female of olivacea from Burma); this may perhaps also be a contributory factor in differences in the length of the corpus bursae observed in the marmoralis species‑pair discussed below). The ductus bursae is broader but with a much smaller and less scrolled sclerotised zone basally. Another species may occur on Bali, represented by two females only (slide 21231; figure 216b in Hacker et al.); the ductus bursae is unsclerotised, with a much smaller ovate corpus bursae set asymmetrically on it, rugose rather than scobinate. There is a series of seven specimens from Australia (in ANIC, Canberra) that have similar facies to those from Sulawesi and Bali; this was taken on the Cobourg Peninsula, Northern Territory, and has been described as cobourgensis Hacker & Holloway, based on five of these specimens. There is also a taxon of the olivacea group, sollemnis Hacker & Holloway, on Christmas I., Indian Ocean. Material from the larger islands of Sundaland may also prove to be distinct as in the case of the marmoralis complex discussed next, but it is too limited to determine this and consists entirely of females so that vesica characters cannot be assessed. Geographical range. India, S. China, Taiwan, Japan, Korea, S.E. Siberia, Thailand, Borneo, Philippines (MNHU, Berlin); Bali. Habitat preference. A single specimen has been taken in lowland forest in the Barito Ulu of Kalimantan Tengah. Chey (1994) recorded four specimens from three different softwood plantations near Brumas in the lowlands of Sabah. Hacker et al. (2008) noted a further female from an area of Brunei with coastal forest and mangrove. |
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