Andrena helvola

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Andrena helvola
Andrena helvola, female

Andrena helvola , female

Systematics
Class : Insects (Insecta)
Order : Hymenoptera (Hymenoptera)
Bees (Apiformes)
Family : Andrenidae
Genre : Sand bees ( Andrena )
Type : Andrena helvola
Scientific name
Andrena helvola
Linnaeus , 1758

Andrena helvola is a sand bee fromthe Andrenidae family . It is a solitary, nest-building bee that flies in one generation from early April to late May.

features

The females of Andrena helvola are approx. 11 to 12 mm long, the body is black, largely yellowish hairy, reddish brown hairy on the thoracic back and the first two tergites, yellowish hairy on the face, the splint brush is yellowish and white, the end fringe is dark brown. The flocculus is very clearly developed.

The males are about 8 to 10 mm long, mostly yellowish hairy, brown-yellow hairy on the thorax back and the first tergites. The mandibles are very long.

Several other species of sand bees are similar, including Andrena haemorrhoa , and A. varians . Special literature is required for an exact determination.

distribution and habitat

A. helvola is widespread in almost all of Europe, from France to Turkey and in Asia to Siberia. Not very common in southern Europe. In Germany A. helvola is widespread, frequent and not endangered in the population.

A. helvola occurs at forest edges, forest clearings, hedges and meadows. The species can also be found in residential areas, in gardens and parks.

Way of life

The species nests solitary and digs nests in the earth by itself. No preference for certain types of soil can be seen. The females collect pollen from different plants, so they are polylectic.

Parasites

Andrena helvola male

These sand bees are parasitized by cuckoo bees of the species Nomada panzeri . Also Fächerflügler ( Stylops ) infested A. helvola .

Individual evidence

  1. ↑ a b c d Paul Westrich: The wild bees of Germany . Eugen Ulmer, Stuttgart 2018, ISBN 978-3-8186-0123-2 , pp. 469 .
  2. ↑ a b c Insects Saxony. Retrieved May 15, 2020 .
  3. ↑ J. Weissmann & H. Schaeffer: Field determination aid for the wild bees of Bavaria (Hymenoptera; Apoidea) . In: NachrBl. bayer. Ent. tape 69 , no. 2 . Munich 2020, p. 1-64 .
  4. ↑ H.-J. Martin & Partner: Sand bees: Andrena helvola. In: http://www.wildbienen.de/ . Retrieved May 15, 2020 .
  5. ↑ C. Schmid-Egger & E. Scheuchl: Illustrated tables of identification of wild bees in Germany and Austria . 3: Andrenidae. Self-published, Velden 1997, p. 180 .
  6. ↑ a b c d Erwin Scheuchl & Wolfgang Willner: Pocket dictionary of wild bees in Central Europe . Quelle & Meyer, 2016, ISBN 978-3-494-01653-5 , pp. 151 f .
  7. ↑ Wild bee cadastre. Retrieved May 16, 2020 .