神奈川県藤沢市におけるシロスジコガネの出現状況と飼育下繁殖
2013 年 2013 巻 34 号 p. 43-48
詳細
2013 年 2013 巻 34 号 p. 43-48
From June 2007 to October 2009, seasonal occurrence patterns of Polyphylla albolineata were investigated near the shore area in Fujisawa City, Kanagawa Prefecture, central Japan. 502 individuals (371 males and 131 females) of P. albolineata, along with 348 individuals of other coleopteran species, were found from May to September 2009. Adults of P. albolineata were notably found in the short period from June to July, the peak time of their appearance was earlier than that of other coleopteran species, for example, Melolontha spp. In terms breeding, adult female P. albolineata laid several eggs. The larval period lasted for approximately 2 years, with the larvae feeding on Calystegia soldanella, Oenothera spp. and Carex pumila. The larvae changed into pupae and emerged thereafter. Newly emerged adults laid many eggs without feedings normally. New larvae hatched from these eggs. In addition to Pinus thunbergii, 3 plants were useful for their valuable food.
