Callipogon (Eoxenus) relictus Semenov, 1899


Callipogon relictus

[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. [download pdf icon]

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. [download pdf icon]

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. [download pdf icon]

Cherepanov A.I.:
Cerambycidae of Northern Asia, Volume 1 - Prioninae, Disteniinae, Lepturinae, Aseminae.
Amerind Publishing, New Delhi: 304pp [pages 49-55], 1988. [download pdf icon]

Danilevsky M.L.:
Longicorn beetles (Coleoptera, Cerambycoidea) of Russia and adjacent countries. Part 1.
Higher School Consulting, Moscow, 550pp [page 27-28], 2014. [download pdf icon]

Callipogon relictus
Callipogon relictus
[Photo © Sergey Nikolayevich Ivanov]

SubfamiliaPrioninae Latreille, 1802
TribusCallipogonini J.Thomson, 1861
GenusCallipogon Audinet-Serville, 1832
SubgenusEoxenus Semenov, 1899
SpeciesCallipogon (Eoxenus) relictus Semenov, 1899