Pachyta quadrimaculata (Linnaeus, 1758)

Subfamilia: LEPTURINAE  /  Tribus: RHAGIINI
Pachyta quadrimaculata
[Photo © Milan Lovětínský]

Pachyta quadrimaculata, a relatively common Palaearctic boreomontanne species with large area of occurence from Europe to North China, has been described from "Europa" as Leptura quadrimaculata by Carl Linné in 1758 [❖]. P. quadrimaculata larvae develop in the dead roots of coniferous trees (Picea, Pinus). Larvae first feed subcortically and then enter the sapwood, leaving the roots after the third overwintering. Pupation occurs in pupal cells in the soil during May-June, life cycle three years. Adults, active from June to August, are diurnal and anthophilous [✧][✳].

Body length:10 - 22 mm
Life cycle:3 years
Adults in:June - August
Host plant:coniferous trees (Picea, Pinus)
Distribution:Austria, Bulgaria, Croatia, Czechia, Estonia, Finland, France, Germany, Hungary, Italy, Poland, Romania, Russia, Serbia, Slovakia, Slovenia, Spain, Switzerland, North China, Kazakhstan, Mongolia

The depicted beetle was collected on flowers (Apiaceae) in Bezručovo údolí (Krušné hory/Ore Mts., Chomutov district, Ústí nad Labem Region, North Bohemia, Czechia) on June 26, 2022.

Collected by Miroslav Polcar

Linné C.:
Systema naturæ per regna tria naturæ secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis.
Systema naturae (Editio 10) Laur. Salvius, Holmiae 1: 824pp, 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 200], 1998 [ISBN: 80-238-2627-1]. [download pdf icon]

Danilevsky M.L.:
Longicorn beetles (Coleoptera, Cerambycoidea) of Russia and adjacent countries. Part 1.
Higher School Consulting, Moscow, 550pp [page 109], 2014. [download pdf icon]

Pachyta quadrimaculata
Pachyta quadrimaculata
[Photo © Milan Lovětínský]
Pachyta quadrimaculata
Pachyta quadrimaculata
[Photo © Milan Lovětínský]

SubfamiliaLepturinae Latreille, 1802
TribusRhagiini Kirby, 1837
GenusPachyta Dejean, 1821
SpeciesPachyta quadrimaculata (Linnaeus, 1758)