Demetrias atricapillus

from Wikipedia, the free encyclopedia
Demetrias atricapillus
2017 07 08 Demetrias atricapillus.jpg

Demetrias atricapillus

Systematics
Family : Ground beetle (Carabidae)
Subfamily : Harpalinae
Tribe : Lebiini
Genre : Demetrias
Subgenus : Demetrias
Type : Demetrias atricapillus
Scientific name
Demetrias atricapillus
( Linnaeus , 1758)
Specimen - dorsal view

Demetrias atricapillus , also known as the black- headed barnacle runner or the common stalk runner , is a beetle from the family of ground beetles (Carabidae).

features

The small ground beetles reach a body length of 4.5–6 mm. The yellow-brown beetles have a black head and a red pronotum . They also have a slightly blackened wing seam and, in rare cases, a brown-black triangular blemish at the base of the wing. The claws have 3 larger teeth.

distribution

The beetle species is found in the Palearctic . It is widespread in Europe. Their occurrence extends in the north to southern Scandinavia and the British Isles including Ireland. The distribution area also includes the Mediterranean and adjacent North Africa as well as Asia Minor and the Middle East .

The species is common and widespread in Western Europe, becoming rarer towards the east. In Germany there are only a few finds for the east of Bavaria and Brandenburg. In Berlin, the first and so far only evidence comes from 2014. From Romania, Slovakia and Lithuania only individual evidence is available.

Way of life

The beetles can be found from spring to autumn. The species prefers loamy meadows, ruderal areas, floodplains and dunes, often near stagnant water, as habitat. The beetles usually stay under leaves or on tufts of grass. They have good flight ability and, unusual for ground beetles, also climbing ability, so that they not only live on the ground, but are often found hunting in the vegetation layer. They mainly eat aphids . The beetle species overwinters as an imago.

As a predator of aphids, the species is considered to have potential use as a beneficial insect in agriculture. Demetrias atricapillus is often one of the most common ground beetle species in fields. It winters in strips of field margins, so that their facility has been proposed to promote the density of beneficial insects. Due to the good flight ability of the species, which is often found flying, the assignment of the individuals in a marginal strip to the respective neighboring fields does not appear to be guaranteed.

Individual evidence

  1. ^ A b Karl Wilhelm Harde, František Severa: Der Kosmos-Käferführer. Franck'sche Verlagsbuchhandlung, Stuttgart 1988, ISBN 3-440-06959-1 , p. 122.
  2. ↑ a b Ground Beetles of Ireland: Demetrias atricapillus . National Museums Northern Ireland - www.habitas.org.uk. Retrieved July 15, 2017.
  3. ↑ a b Heinz Freude, Karl Wilhelm Harde, Gustav Adolf Lohse: Die Käfer Mitteleuropas . Volume 2 Adephaga 1, Goecke & Evers Verlag, Krefeld 1976, ISBN 3-87263-025-3 . Page 447-448.
  4. ^ Demetrias (Demetrias) atricapillus (Linne, 1758) . Fauna Europaea. Retrieved July 15, 2017.
  5. ↑ a b Jiři Zahradnik, Irmgard Jung, Dieter Jung et al .: Käfer Central and Northwestern Europe, Parey Berlin 1985, ISBN 3-490-27118-1 , p. 94.
  6. ^ Karl-Hinrich Kielhorn, Jörg Gebert, Ulrich Franz (2014): Additions to the Red List and List of Entire Species of Ground Beetles (Coleoptera: Carabidae) from Berlin. Märkische Entomologische Nachrichten 16 (2): 197-202.
  7. ↑ Radomir Jaskuła (2007): First record of Demetrias atricapillus L. from Romania (Coleoptera: Carabidae). Entomological Problems 37 (1-2): 6 Dec.
  8. ↑ Vytautas Tamutis & Arvids Barševskis (2014): A faunistic review of ground beetles of Lebiinae Bonelli, 1810 (Coleoptera, Carabidae) of Lithuania. Entomologica Fennica 25: 65-85.
  9. ↑ Borislav Guéorguiev: New and interesting records of Carabid Beetles from South-East Europe, South-West and Central Asia, with taxonomic notes on Pterostichini and Zabrini (Coleoptera, Carabidae). In: Linz biological contributions. 43rd volume, issue 1, Linz 2011, pp. 501-547 ( PDF on ZOBODAT ).
  10. ↑ a b Klaus Koch: Die Käfer Mitteleuropas - Ökologie - Volume 2, Goecke & Evers Verlag, Krefeld, 1989, ISBN 3-87263-040-7 , p. 100.
  11. ↑ a b Demetrias atricapillus . www.naturespot.org.uk. Retrieved July 15, 2017.
  12. ^ A b Stan Finch, Rosemary H. Collier (2007): Pest insect control by predatory ground beetles - 40 years of doubt. Integrated Protection of Field Vegetables IOBC / wprs Bulletin 30 (8): 43-51.
  13. ^ MB Thomas, SD Wratten, NW Sotherton (1991): Creation of 'Island' Habitats in Farmland to Manipulate Populations of Beneficial Arthropods: Predator Densities and Emigration. Journal of Applied Ecology 28 (3): 906-917.
  14. ^ MB Thomas, SD Wratten, NW Sotherton (1992): Creation of `Island 'Habitats in Farmland to Manipulate Populations of Beneficial Arthropods: Predator Densities and Species Composition. Journal of Applied Ecology 29 (2): 524-531.

Web links

Commons : Demetrias atricapillus  - collection of images, videos and audio files