フィリピン・パラワン島のオナシアゲハ

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Since 1967, several lepidopterologists collected Princeps demoleus in Luzon island of the Philippines, and those specimens were identified as Taiwan subspecies, P. d. libanius FRUHSTORFER, by T. IWASE (1969). According to J. Jumalon (1969), this butterfly was collected in Luzon, Cebu and Leyte islands, and he thought that this butterfly was a new-commer to the Philippines from other country recently. The present author visited to Palawan island for malaria investigation in January, 1970, and he saw this butterfly in this island, but he could not collect it at that time. He had second chance to stay Palawan from October, 1970, to February, 1971, and he collected about twenty specimens of this butterfly. After his returning to Japan, he examined his collection and identified it as subspecies libanius. The author thought that this was one example of an artificial migration by ship. His assumption is as follows: this butterfly have been brought to Manila, Luzon island, with citrus saplings imported from Taiwan, and soon this citrus was replanted to Cebu, and the butterfly might also be brought to Cebu with citrus saplings and again to Leyte from Cebu. Since 1969, this butterfly further invaded to Palawan with citrus saplings from Luzon island. In Palawan this butterfly is distributed only in lowland areas near village and town. The author went to forest areas several times, but could not see it in such places. The author shows 4 pictures of Princeps demoleus libanius FRUHSTORFER collected in Palawan island (Fig.1a and b…♂.c and d…♀). He also shows the distribution map of P. demoleus in the Philippiens Fig. 2×…Distribution of this butterfly.→…Distribution course of this butterfly). According to a short report by S. Ae (1970), this butterfly was also collected in Negros and Mindanao islands.
日本鱗翅学会の論文
1971-12-31

フィリピン・パラワン島のオナシアゲハ

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