Molorchus (Caenoptera) minor (Linnaeus, 1758)
ssp. minor (Linnaeus, 1758)

Molorchus minor minor
Molorchus minor minor ♂ + ♀ [Photo © Milan Lovětínský]
Molorchus minor minor
[Photo © Udo Schmidt]

Molorchus minor, a very common and widely distributed Palaearctic species developing in coniferous trees, has been described from ""Europa" as Necydalis minor by Karl Linné in 1758 [✮]. Larval development under the bark of branches or thinner trunks (diameter 3 - 12 cm) of dying, uprooted or felled conifers. Before pupation the larvae enter the sapwood and create hook-shaped pupal cells about 1 - 4 cm below the wood surface. Pupation occurs as early as the end of summer and the adults overwinter in the pupal cells. Life-cycle one to two years. The adults, active from May to August, frequently visit flowers but also can be found on branches of dying/dead, felled or uprooted host trees or logs and on firewood [❖][▿].

Body length:6 - 16 mm
Life cycle:1 - 2 years
Adults in:May - August
Host plant:polyphagous in coniferous trees (prefers Picea but also in Abies, Larix, Pinus)
Distribution:Europe, Russia, Caucasus, Transcaucasia, Iran, China, Korea, Mongolia, Kazakhstan, Turkey

The mounted male beetle was collected in Selbitz environs (Hof district, Upper Franconia, Bavaria, Germany) by Udo Schmidt in summer 2005. The depicted living beetles were: (ML/MP) - reared from larvae found in Norway spruce (Picea abies) branches in Lašovice environs (Rakovník district, Central Bohemia, Czechia) in winter 2022; (TN) - photographed in Hungary.

Collected by Udo Schmidt, Miroslav Polcar and Tamás Németh

Linné C.:
Systema naturæ per regna tria naturæ secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis.
Systema naturae (Editio 10), Laurent Salvius, Holmiæ 1: 824 pp, 1758. [download pdf icon]

Sláma M.E.F.:
Tesaříkovití – Cerambycidae České republiky a Slovenské republiky / Cerambycidae of the Czech Republic and Slovak Republic.
Milan Sláma private printing, Krhanice, 383pp [page 120], 1998 [ISBN: 80-238-2627-1]. [download pdf icon]

Vitali F.:
Atlas of the Insects of the Grand-Duchy of Luxembourg: Coleoptera, Cerambycidae.
Ferrantia, Musée national d’histoire naturelle, Luxembourg 79: 1-208 [pages 58-59], 2018. [download pdf icon]

Molorchus minor minor
Molorchus minor minor
Molorchus minor minor
Molorchus minor minor
Molorchus minor minor[Photo © Milan Lovětínský]
Molorchus minor minor
Molorchus minor minor ♀ [Photo © Tamás Németh]

SubfamiliaCerambycinae Latreille, 1802
TribusMolorchini Mulsant, 1863
GenusMolorchus Fabricius, 1793
SubgenusCaenoptera C.G. Thomson, 1859
SpeciesMolorchus (Caenoptera) minor (Linnaeus, 1767)
SubspeciesMolorchus (Caenoptera) minor minor (Linnaeus, 1758)