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''Callipogon relictus'' is a species of longhorn beetle which is mostly found in the southern part of Russian Far East, but also in China and Korea.〔 It inhabits mixed and deciduous forests.〔 The population of ''Callipogon relictus'' is decreasing due to deforestation and uncontrolled collection, and therefore the species are listed in the Russian Red Book (category II).〔 The larvae of ''Callipogon relictus'' develop in the drying deciduous trees. The process takes 4 to 6 years, and the same tree can be populated by larvae several times a year.〔 Larvae bring along spores of the fungus ''Pleurotus citrinopileatus'',〔 that contributes to degradation of the tree. With the length reaching up to 110 mm, ''Callipogon relictus'' is the largest beetle of Russia.〔〔〔 Larvae of different longhorn beetles can coexist in the same tree, such as ''Callipogon relictus'', ''Rosalia coelestis'', ''Leptura thoracica'', ''Rhabdoclytus acutivittis'', ''Anoplodera cyanea'' and several other species.〔 ==Taxonomy== The beetle is a relict of the Tertiary period and the sole representative of the tropical genus ''Callipogon'' in the fauna of the Old World – other species of this genus inhabit Central and South Americas.〔 ''Callipogon relictus'' was described in 1898 by the Russian entomologist Andrey Semyonov-Tyan-Shansky (who wrote his last name as Semyonov until 1906). He distinguished the new species from the other species of the genus by the following features:〔〔 * Extended rear part, that makes antennae shorter relative to the body size, * Shorter and almost hairless upper jaws * Edges of the prothorax are not jagged but bear spines, * Eyes are closer together. These features were later interpreted as a sign of higher evolutionary development of ''Callipogon relictus'' compared to other species of its genus.〔 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「Callipogon relictus」の詳細全文を読む スポンサード リンク
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