Callipogon (Eoxenus) relictus Semenov, 1899
/ Tribus: CALLIPOGONINI
[Photo © David Navrátil, click on the picture for 4K resolution]
Callipogon relictus, a relict, endangered and very rare Cerambycid occuring in Russian Far East, Korean Peninsula and NE China, has been described from Vladivostok region by Andrej Petrovitsch Semenov Tian-Shanskij in 1899 [▽].
C. relictus (which is, among other things, the largest palaearctic beetle...) is the only representative of the otherwise exclusively Neotropical genus Callipogon known from the Old World. Its disjoint distribution is considered evidence
of a connection between the Old World and the New World by the Bering land-bridge showed that Callipogon originated in the Paleocene ca. 60 million years ago across the Neotropics and Eastern Palearctic [❖].
The C. relictus is a typical inhabitant of deciduous valley forests and its saproxylo-mycetophagous larvae develop in trunks of dead old deciduous trees (e.g. Ulmus propinqua, Tilia amurensis, Populus maximowiczii,
Fraxinus mandschurica, Acer mandschuricum, Quercus mongolica, Betula costata) [✧]. Life cycle is 3 - 5 years. Adults, active from July to September, are crepusural and nocturnal. The biology of this
remarkable and protected species is well described in several recent works of Russian and South Korean entomologists [❖][★].
|Body length:||♂♂ 60 - 110 mm / ♀♀ 58 - 90 mm|
|Life cycle:||3 - 5 years|
|Adults in:||July - September|
|Host plant:||polyphagous in deciduous trees (Ulmus propinqua, Tilia amurensis, Populus maximowiczii, Fraxinus mandschurica, Acer mandschuricum, Quercus mongolica, Betula costata)|
|Distribution:||Russian Far East, Korean Peninsula and NE China|
The depicted mounted female beetle was collected by a local collector in Kamenushka (Каменушка) village environs (Ussuriysk district, Primorsky Krai, Far Eastern Federal District, Russia) in August 2015.
The living male was photographed by Sergey Nikolayevich Ivanov on spur of Siniy khrebet (Синий хребет) range near town Spassk-Dalny (Spassky district, Primorsky Krai, Far Eastern Federal District, Russia) on July 18, 2013.
Semenov Tian-Shanskij A.P.:
[ Callipogon (Eoxenus) relictus, sp.n. a representative of Neotropical genus of timber-beetles (Cerambycidae) in Russian fauna. ]
Horae Societatis Entomologicae Rossicae, St. Petersbourg 32 (3-4): 562-580, 1899.
Kuprin A.V., Bezborodov V.G., Yi D.A., Kotlyar A.K.:
Development biology and ecological peculiarities of the relict longhorn beetle Callipogon relictus Semenov, 1899 (Coleoptera, Cerambycidae).
Entomological Review 94: 1251–1256, 2014.
Lee S.-G., Lee B.-W., Kim Ch.-H., Kang J.H., Oh S.-H., Lim J.:
Historical review and occurrence records of Callipogon relictus Semenov, 1899 (Coleoptera, Cerambycidae) in Gwangneung Forest, South Korea with suggestions for species conservation.
ZooKeys 1024: 1–29, 2021.
Cerambycidae of Northern Asia, Volume 1 - Prioninae, Disteniinae, Lepturinae, Aseminae.
Amerind Publishing, New Delhi: 304pp [pages 49-55], 1988.
Longicorn beetles (Coleoptera, Cerambycoidea) of Russia and adjacent countries. Part 1.
Higher School Consulting, Moscow, 550pp [page 27-28], 2014.
[Photo © Sergey Nikolayevich Ivanov]
|Subfamilia||Prioninae Latreille, 1802|
|Tribus||Callipogonini J.Thomson, 1861|
|Genus||Callipogon Audinet-Serville, 1832|
|Subgenus||Eoxenus Semenov, 1899|
|Species||Callipogon (Eoxenus) relictus Semenov, 1899|