Chaetocnema hortensis

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Chaetocnema hortensis
2018 04 14 Chaetocnema hortensis.jpg

Chaetocnema hortensis

Systematics
Family : Leaf beetles (Chrysomelidae)
Subfamily : Galerucinae
Tribe : Flea Beetle (Alticini)
Genre : Chaetocnema
Subgenus : Chaetocnema
Type : Chaetocnema hortensis
Scientific name
Chaetocnema hortensis
( Geoffroy , 1785)
preparation
Genitals of Chaetocnema hortensis

Chaetocnema hortensis belongs to the flea beetles (tribe Alticini, subfamily Galerucinae) from the family of leaf beetles (Chrysomelidae).

features

The beetles are 1.5 to 2.3 millimeters in size. They have a bronze-brown or bronze-copper colored basic color. The pronotum is densely punctured. Numerous rows of dots run over the wing covers , the first 2 or 3 of which run irregularly in the front area. The basal antennae are yellow-red. The posterior femora are greatly thickened. All femora are dark, while the tibia and tarsi are yellowish red.

distribution

Chaetocnema hortensis is a Palearctic species. It occurs in almost all of Europe. The species is absent on the islands of Ireland and Iceland. To the east, its range extends to the Far East of Russia. The species is also found in the Caucasus and the Central Asian republics.

Way of life

The wintering adult beetles become active again in March / April. The beetles live on different types of grass. The larvae drill at the base of grain stalks and can cause considerable damage in the process. They take 14–22 days to develop. They then leave the stems to pupate in the ground. The new generation of beetles appear between the end of June and August.

Similar species

Chaetocnema aridula is larger at 2.5–3 mm. In addition, the rows of points on the Elytres are even more irregular.

Taxonomy

The following synonyms can be found in the literature :

  • Altica hortensis Geoffroy , 1785
  • Chaetocnema aridella ( Paykull )
  • Chaetocnema brenskei Pic , 1910
  • Chaetocnema hortensis ( Fourcroy )

Individual evidence

  1. ↑ a b c d e f Heinz Freude, Karl Wilhelm Harde, Gustav Adolf Lohse (ed.): Die Käfer Mitteleuropas . tape 9 . Cerambycidae Chrysomelidae . Spektrum Akademischer Verlag, Munich 1999, ISBN 3-8274-0683-8 (first edition: Goecke & Evers, Krefeld 1966).
  2. ^ A b Karl Wilhelm Harde , František Severa : Der Kosmos-Käferführer. The Central European beetle . Franckh-Kosmos, Stuttgart 2000, ISBN 3-440-06959-1 , p. 298 .
  3. ↑ a b Arved Lompe: Beetle of Europe - Chaetocnema . www.coleo-net.de. Retrieved May 10, 2018.
  4. ↑ a b c d e f g h i j Interactive Agricultural Ecological Atlas of Russia and Neighboring Countries . AgroAtlas. Retrieved May 10, 2018.
  5. ↑ a b c Chaetocnema hortensis in Fauna Europaea. Retrieved May 10, 2018

Web links

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