Mushroom barge beetle

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Mushroom barge beetle
Scaphisoma agaricinum ♀

Scaphisoma agaricinum ♀

Systematics
Order : Beetle (Coleoptera)
Subordination : Polyphaga
Family : Kurzflügler (Staphylinidae)
Subfamily : Barn beetle (Scaphidiinae)
Genre : Scaphisoma
Type : Mushroom barge beetle
Scientific name
Scaphisoma agaricinum
( Linnaeus , 1758)

The mushroom barge beetle ( Scaphisoma agaricinum , syn .: Scaphosoma agaricinum ) is a beetle from the subfamily of the barge beetles (Scaphidiinae). The genus Scaphisoma is represented in Europe with thirteen, mostly difficult to distinguish species . The species Scaphisoma agaricinum is the most common representative of its genus in Central Europe.

features

The beetles reach a body length of 1.5 to 1.9 millimeters. The wings are fine but clearly dotted . The sash seam is slightly raised like a roof between the seam strips. The seam strip is bent outwards parallel to the base of the cover wing (Fig. 5, arrowhead) and goes out shortly afterwards. It does not reach the inner third of the base half of the pronotum . It can only be reliably separated from the species Scaphisoma inopinatum by a genital examination (chitinized parts of the aedoeagus Fig. 7). The antennae are also used to identify the species (Fig. 6). In all Central European species, the first two links are very strong, the third link very small and the last five to six links form a loose club. If there are several species, the second lobe link (eighth antenna link) is significantly smaller than the one following and the one in front of it. In Scaphisoma agaricinum the eighth antennae is about the same length as the sixth.

Occurrence and way of life

The species occurs in Europe, the Caucasus , Turkestan , Asia Minor and North Africa. It is common to very common in Central Europe. The animals colonize mushrooms and wet, rotten, fungus-infested dead wood.

The females form conspicuously large eggs that take up almost a third of the abdomen.

  • Fig. 1: Top view

  • Fig. 2: side view

  • Fig. 3: Front view

  • Fig. 4: underside

  • Fig. 5: Seam strips

  • Fig. 6: Sensor

  • Fig. 7: Aedoeagus

swell

literature

  • Heinz Joy, Karl Wilhelm Harde, Gustav Adolf Lohse: The beetles of Central Europe . tape 3 . Adephaga 2 - Staphylinoidea 1. Goecke & Evers, Krefeld 1971, ISBN 3-87263-015-6 .
  • Karl Wilhelm Harde, Frantisek Severa and Edwin Möhn: The Kosmos Käferführer: The Central European Beetles. Franckh-Kosmos Verlags-GmbH & Co KG, Stuttgart 2000, ISBN 3-440-06959-1 .
  • A. Horion: Faunistics of the Central European Beetles Volume II: Palpicornia - Staphylinoidea, Vittorio Klostermann, Frankfurt am Main, 1949.
  • Edmund Reitter : Fauna Germanica. The beetles of the German Reich (= digital library . 134). Neusatz and facsimile of the 5-volume edition Stuttgart 1908 to 1916. Directmedia Publishing, Berlin 2006, ISBN 3-89853-534-7 .

Individual evidence

  1. ↑ Scaphisoma in Fauna Europaea. Retrieved July 24, 2014