Bothynoderes affinis

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Bothynoderes affinis
2019 05 12 Bothynoderes affinis.jpg

Bothynoderes affinis

Systematics
Superfamily : Curculionoidea
Family : Weevil (Curculionidae)
Subfamily : Lixinae
Tribe : Cleonini
Genre : Bothynoderes
Type : Bothynoderes affinis
Scientific name
Bothynoderes affinis
( Closet , 1781)
Dorsal view, specimen

Bothynoderes affinis is a beetle from the family of weevils (Curculionidae). The species is rarely also called "goosefoot weevil".

features

The beetles are 6–11 mm long. They are colored black and contrasted by a patchy white hair made up of white, single-pointed hair scales. The pronotum is scaled white on the sides, almost bare in the middle and here roughly wrinkled and dotted. The elytra are densely scaled white. They have a shoulder patch and a wide, inwardly shortened, transverse central band as well as a patch at the top. This is bare, roughly sculpted and without rough dotted stripes. The short and wide trunk is conically narrowed towards the tip, it is canted on the side and has a central keel. The second link of the antennae is significantly longer than the first. When viewed from above, the pronotum is almost square and without a central keel, its base is slightly pulled forward in the middle towards the shield . The limbs of the legs are short, the second limb no longer than the third.

distribution

Bothynoderes affinis occurs in the Palearctic . The beetle species is widespread in Europe. The species is also represented in Great Britain and Scandinavia . To the east, the occurrence extends over Asia Minor to the Middle East (Iran), to Central Asia (West China) and to Siberia . The second species of the genus Bothynoderes , Bothynoderes declivis , also occurs in Europe.

Way of life

Typical habitats of Bothynoderes affinis are steppe biotopes and ruderal areas . The beetles can be seen from May. The oligophage uses various foxtail plants as host and fodder plants . These include Amaranth ( Amaranthus ), Report ( Atriplex ), Radmelden ( Bassia ), the sugar beet ( Beta vulgaris ), the sticky goosefoot ( Dysphania botrys ), goosefoot ( Chenopodium ), the multi-seeded goosefoot ( Lipandra polysperma ) and the saltwort ( Kali turgidum ). Like other Cleonini, the female lays an egg on the root neck or on the main root of the host plant. The larva emerging from the egg bites into the plant tissue. At the root, at the point of larval development, a fusiform or irregularly shaped bile forms . Several larvae can develop in one bile. The new generation beetles appear at the end of August. The species overwinters as an imago . In the case of mass occurrences, the beetles can cause considerable damage to sugar beet plantations (the young plants die, their development is inhibited or the yields and their sugar content are lower).

Taxonomy

The valid first description of the species as Curculio affinis by cabinet comes from 1781, some older names are not available because they are homonyms . It belongs to the genus Bothynoderes , which comprises only two species, and is, under the synonymous name Curculio albidus Fabricius , 1787, their type species . The genus, and thus also this species, has long been listed in the literature under the synonymous name Chromoderus Motschulsky .

The following synonyms can be found in the literature for the species : Cleonus albicelus Schaitter , 1870, Curculio albidus Fabricius, 1787 , Curculio bonsdorfii Gmelin , 1790, Curculio candidus Herbst , 1784 (nec Fabricius , 1775), Curculio fasciatus O.F. Müller , 1776, Curculio niveus Bonsdorff , 1785.

Individual evidence

  1. ↑ a b Bernhard Klausnitzer (Ed.): Stresemann - excursion fauna of Germany. Volume 2: Invertebrates: Insects. 11th edition. Spektrum Verlag (Springer), Heidelberg 2011, ISBN 978-3-8274-2451-8 , p. 539.
  2. ↑ GH Lohse: subfamily Cleoninae. In: H. Freude, KW Harde, GA Lohse (Ed.): Die Käfer Mitteleuropas. Volume 11, Goecke and Evers Verlag, Krefeld 1983, ISBN 3-87263-031-8 , pp. 24-25 (sub Chromoderus fasciatus (Müll.))
  3. ↑ a b Bothynoderes affinis in Fauna Europaea. Retrieved September 22, 2019
  4. ↑ a b Bothynoderes affinis. www.kaefer-der-welt.de (U. Schmidt), accessed on September 22, 2019 .
  5. ↑ a b c d Bothynoderes affinis. bladmineerders.nl, accessed on September 22, 2019 .
  6. ^ Ivan Löbl, Ales Smetana: Catalog of Palaearctic Coleoptera. Vol. 8: Curculionoidea II. Brill, Leiden / Boston 2013, ISBN 978-90-04-25206-6 , p. 439.
  7. ↑ Bothynoderes . International Weevil Community website as of June 19, 2017.

Web links

Commons : Bothynoderes affinis  - collection of images, videos and audio files