Background Holorusia Loew, 1863 (Diptera: Tipulidae) is a relatively large crane fly genus with a wide distribution in the Afrotropic, Australasian–Oceanian, Eastern Palearctic, Oriental and Nearctic Regions. Although the genus is well known to include the largest crane fly species, the immature stages are, thus far, only described for the larva and pupa of the North American Holorusia hesperea Arnaud & Byers, 1990. New information In this study, we describe for the first time the egg, larva and pupae of the Japanese Holorusia mikado (Westwood, 1876). Larvae were collected from semi-aquatic habitats, from slow flowing areas of streams and small waterfalls where leaf litter accumulates; the larvae are detritivores and feed on wet, decomposing leaves. The larvae were reared to adults in the laboratory. Morphological characters of immature stages discussed with comparison with the North American H. hespera. Male and female genitalia are illustrated and described in detail for the first time.

中文翻译：

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来自日本的霍洛鲁西亚米卡多幼虫，和意象的详细描述和插图（韦斯特伍德，1876年）（双翅目：ago科）

背景霍洛鲁西亚·洛夫（Holorusia Loew），1863年（双翅目：Tipulidae）是一个相对较大的鹤蝇属，在非洲，非洲，大洋洲，东古北洋，东方和近北地区广泛分布。尽管众所周知该属包括最大的鹤蝇类，但迄今为止，仅针对北美霍洛斯氏菌属赫氏菌Arnaud＆Byers，1990年的幼虫和进行了描述。第一次是日本霍洛鲁西亚米卡多的蛋，幼虫和p（韦斯特伍德，1876年）。幼虫是从半水生栖息地，缓慢流动的溪流和堆积有树叶凋落物的小瀑布中采集的；幼虫是有害的，以湿的，腐烂的叶子为食。在实验室中将幼虫饲养到成虫。与北美H. hespera进行了比较，讨论了未成熟阶段的形态特征。首次对男性和女性生殖器进行了详细说明和描述。