Molorchus (Molorchus) ishiharai Ohbayashi, 1936
[= Molorchus kobotokensis kunashiricus Tsherepanov, 1981]
[= Molorchus tsutsuii Hayashi, 1958]

Molorchus ishiharai
[Photo © Kirill V. Makarov, click on the picture for 4K resolution]

Molorchus ishiharai, a species occurring in Russian Far East, Japan and Korea, has been described from Japan by Kazuo Ohbayashi in 1936 [▽]. Females of M. ishiharai lay eggs in dying or freshly dead twigs of living spruces (Picea) during May and June. Young larvae feed subcortically create irregular in sapwood impressed galleries plugged densely with fine frass. Mature larvae enter the wood, leaving exit hole plugged with frass, and create pupal cells at the end of the gallery. Pupation and pupal development completed during autumn, hatched beetles overwinter in pupal cells and emerge in the following spring [✧].

Body length:7 - 8 mm
Life cycle:1 year
Adults in:May - June
Host plant:spruce (Picea)
Distribution:Russian Far East, Japan and Korea

The depicted beetles were collected at Listvennichnaya (Лиственничная) river under mouth of Kamenystyi (Каменистый) creek (N43°35′47″ E131°21′53″; 400 m a.s.l, Borisovskoye Plateau, South of Primorsky krai, Far Eastern Federal District, Russia) on May 30, 2019.

Collected by Kirill V. Makarov

Ohbayashi K.:
New Longicorn-Beetles from Japan.
The Transactions of the Kansai Entomological Society 7: 11-15, 1936.

Cherepanov A.I.:
Cerambycidae of Northern Asia, Volume 2 - Cerambycinae Part I.
Amerind Publishing, New Delhi: 304pp [pages 91-95 as Molorchus kobotokensis kunashiricus Tsherepanov, 1981], 1988. [download pdf icon]

SubfamiliaCerambycinae Latreille, 1802
TribusMolorchini Mulsant, 1863
GenusMolorchus Fabricius, 1793
SubgenusMolorchus Fabricius, 1793
SpeciesMolorchus (Molorchus) ishiharai Ohbayashi, 1936