Yellow-brown curl beetle

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Yellow-brown curl beetle
Yellow-brown curl beetle (Rhizotrogus aestivus)

Yellow-brown curl beetle ( Rhizotrogus aestivus )

Systematics
Family : Scarab beetle (Scarabaeidae)
Subfamily : Melolonthinae
Tribe : Melolonthini
Sub tribus : Rhizotrogina
Genre : Rhizotrogus
Type : Yellow-brown curl beetle
Scientific name
Rhizotrogus aestivus
( Olivier , 1789)

The Yellow-brown fallow beetle ( Rhizotrogus aestivus ) is a beetle from the family of scarab beetles (Scarabaeidae).

features

The yellow-brown colored beetles have a body length of 12 to 18 millimeters and have the typical appearance of the scarab beetle . The wing covers ( elytres ) are dark brown at the seam, the sides and at the rear edge. The base of the pronotum is clearly lined. The 10-part sensors have a 3-part fan.

Occurrence and habitat

The yellow-brown curl beetle occurs in the western Palearctic (large parts of Europe). In Northern Europe (British Isles, Scandinavia, Baltic States) the beetle species is absent. Their distribution area extends to Asia Minor and the Caucasus . In Germany the species is considered "endangered" (red list - level 3). The heat-loving beetle species prefers dry slopes, semi-arid grasslands, sandy floodplains, fallow areas and clearings as their habitat.

Way of life

The beetles fly from early April to June. The mostly crepuscular beetles are often found on oaks ( Quercus ). The grubs feed on the roots of various plants and need 2-3 years for their development.

The yellow brown curl beetle flies at the time when the great horseshoe bats are feeding again after their hibernation. In this critical time for the bats, when the females are also pregnant, this beetle species is an important source of food.

Individual evidence

  1. ↑ a b c d e f Karel Hůrka: Brouci - Beetle Brouci Ceske a Siovenske republiky Beetle of the Czech and Slovak Republics . KODIAK, ISBN 80-86447-11-1 , p. 93.
  2. ^ A b c Karl Wilhelm Harde, Frantisek Severa and Edwin Möhn: Der Kosmos Käferführer: The Central European Beetles. Franckh-Kosmos Verlags-GmbH & Co KG, Stuttgart 2000, ISBN 3-440-06959-1 , p. 254
  3. ↑ a b c d Yellow-brown curl beetle . www.insektenbox.de. Retrieved March 9, 2017.
  4. ↑ Rhizotrogus aestivus . insektoid.info. Retrieved March 9, 2017.
  5. ^ Red list of endangered scarab beetles (Coleoptera: Lamellicornia) in Bavaria (PDF 52.8 KB) Bavarian State Office for the Environment. Retrieved March 9, 2017.
  6. ↑ a b Klaus Koch: Die Käfer Mitteleuropas - Ökologie - Volume 2 , Goecke & Evers Verlag, Krefeld, 1989, ISBN 3-87263-040-7 , p. 373
  7. ↑ Coordination offices for bat protection . Bavarian State Office for the Environment. Retrieved March 9, 2017.

Web links

Commons : Yellow-brown fallow beetle ( Rhizotrogus aestivus )  - Collection of images, videos and audio files