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Pachyta quadrimaculata

Pachyta quadrimaculata

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Cladus: Metapterygota
Infraclassis: Neoptera
Cladus: Eumetabola
Cladus: Endopterygota
Superordo: Coleopterida
Ordo: Coleoptera
Subordo: Polyphaga
Infraordo: Cucujiformia
Cladus: Phytophaga
Superfamilia: Chrysomeloidea

Familia: Cerambycidae
Subfamilia: Lepturinae
Tribus: Rhagiini
Genus: Pachyta
Species: Pachyta quadrimaculata

Pachyta quadrimaculata (Linnaeus, 1758)

Leptura quadrimaculata Linnaeus, 1758

Primary references

Linnaeus, C. 1758. Systema Naturae per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Tomus I. Editio decima, reformata. Holmiæ: impensis direct. Laurentii Salvii. i–ii, 1–824 pp DOI: 10.5962/bhl.title.542: 397. Reference page.


Pachyta quadrimaculata Taxon details on Fauna Europaea
Tribe Rhagiini: Pachyta quadrimaculata (L., 1758) - scanography by A.A. Safronov
ZooBank: B47F466A-099F-4D5F-A903-95181694E80F

Vernacular names
Deutsch: Gelber Vierfleckbock
lietuvių: Keturdėmis medkirtis
polski: Kwiatomir czteroplamy
русский: Четырёхпятнистая пахита
svenska: Fyrfläckig skulderbock
українська: Пахіта чотириплямиста
Tiếng Việt: Pachyta quadrimaculata

Pachyta quadrimaculata is a species of the Lepturinae subfamily in long-horned beetle family.[1][2]


There are five varieties in the species:[1]

Pachyta quadrimaculata var. basinotata Roubal, 1937
Pachyta quadrimaculata var. bimaculata Schönherr, 1817
Pachyta quadrimaculata var. hubenthali Jänner, 1918–1919
Pachyta quadrimaculata var. mulsanti Pic, 1945
Pachyta quadrimaculata var. sexmaculata Heyrovsky, 1934


This beetle is present in Austria, Bulgaria, Croatia, Czech Republic, Estonia, Finland, France, Germany, Hungary, Italy, Mongolia, Poland, Romania, Serbia, Slovakia, Slovenia, Spain, Switzerland, Central and Eastern European Russia, They are absent in the British Isles and the Netherlands.[1][3] up to Siberia. The eastern boundary of the distribution area runs along the Amur River.
Mating couple, covered with pollen

This species can be found in the coniferous forests and on forest paths of Europe.[4]

Adult beetles of Pachyta quadrimaculata can reach a body length of about 11 to 22 mm,[1][4] but females have a more compact body than males. These beetles have a black body and show straw-yellow elytra with four large black spots, two spots on each elyton. Said two spot can occasionally be fused with one another, and there are also individuals who only wear one patch per wing. The head and the pronotum are long, with protruding yellow hairs. Elytra and the pronotum are rather dotted.

Adults flight period, when the fully formed beetles can be found, extends from mid-June until the beginning of August. The life cycle for imago reaches three years.[4] These beetles usually visit flowers, especially flowering shrubs and Apiaceae flowers. Larvae develop in coniferous wood. They live in superficial dead pine roots and possibly also in dead spruce roots. They mainly feed on Scots Pine (Pinus sylvestris) and on Norway Spruce (Picea abies).[1]
External links

Beetles (Coleoptera) and Coleopterologists


The national key to Sweden's flora and fauna. Beetles: Coleoptera: Cerambycidae. 2007. ArtDatabanken, SLU, Uppsala, ISBN 978-91-88506-62-7 (in Swedish)


BioLib Taxon profile — species Pachyta quadrimaculata (Linnaeus, 1758)
Hallan, Joel, Synopsis of the described Coleoptera of the World. Biology Catalog. Texas A&M
Fauna Europaea
Longhorn beetles (Cerambycidae) of the West Palearctic region

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