Prionus insularis Motschulsky, 1857
ssp. insularis Motschulsky, 1857

Subfamilia: PRIONINAE  /  Tribus: PRIONINI
Prionus insularis
[Photo © Kirill V. Makarov,]

Prionus insularis, a species occuring in North-East Asia (Russian Far East, North China, Japan, North Korea), has been described from Japan by Victor Motschulsky in 1857 [▽]. The species, inhabiting broad-leaved forests, is ecologically associated with decaying wood of deciduous trees. The typical habitats are valleys, moderately dense forests in river (creek) catchment areas, and terraces with developed grass cover. Adults are active at dusk from July to September. Female lays eggs in soil to on roots of thick-trunked decaying trees and stumps. Larval development, at least 3 years long, takes place under bark and later in wood of decaying roots. Third-instar larvae migrate to root surface, make pupal cell in soil alongside root with large fibrous frass [✧].

Body length:18 - 45 mm
Life cycle:at least 3 years
Adults in:July - September
Host plant:polyphagous in rotten wood of deciduous tree (Quercus, Ulmus, Acer)
Distribution:Russian Far East, North China, Japan, North Korea

The depicted beetles were collected in Tretyakovo (Третьяково) cottage settlement environs (N43°59′09″ E145°39′15″; Valentina creek valley, Kunashir/Кунаши́р island, Kuril Islands, Yuzhno-Kurilsky district, Sakhalin region, Russia) on: ♂ (32 mm) - August 13-14, 2011 and ♀ (36 mm) - August 17, 2008.

Collected by Kirill V. Makarov nad I. Melnik

Motschulsky V.I.:
II. Entomologie spéciale. Insectes du Japon.
Études Entomologiques 6: 25-41, 1857. [download pdf icon]

Lazarev M.A.:
Таксоны жуков-усачей (Coleoptera, Cerambycidae) видовой группы, описанные В.И. Мочульским, и их типы / Species group taxa of Longhorned beetles (Coleoptera, Cerambycidae) described by V.I. Motschulsky and their types.
Humanity space International Almanac 8 (1): 6-70, 2019. [download pdf icon]

Cherepanov A.I.:
Cerambycidae of Northern Asia, Volume 1 - Prioninae, Disteniinae, Lepturinae, Aseminae.
Amerind Publishing, New Delhi: 304pp [pages 199-203], 1988. [download pdf icon]

SubfamiliaPrioninae Latreille, 1802
TribusPrionini Latreille, 1802
GenusPrionus Geoffroy, 1762
SpeciesPrionus insularis Motschulsky, 1857
SubspeciesPrionus insularis insularis Motschulsky, 1857