Longitarsus dorsalis
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Longitarsus dorsalis |
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| ( Fabricius , 1781) |
Longitarsus dorsalis , German light-edged long-footed earth flea , belongs to the flea beetles (tribe Alticini, subfamily Galerucinae) from the family of leaf beetles (Chrysomelidae).
features
The beetles are 1.8 to 2.5 millimeters in size. In contrast to related species, the species is easy to identify due to its color. The head, antennae and legs are black. The red-brown pronotum is occasionally darkened in the middle (on the disc). A wide whitish-yellow border runs along the sides of the black wing-coverts . As with all flea beetles, the posterior femora are thickened.
Way of life
The fleas prefer warm and sunny locations with limestone or sandy soils. You hibernate as an imago. You can see them all year round. The adult beetles feed on the leaves and flowers, the larvae on the roots of ragweed ( Senecio ), especially narrow-leaved ragwort ( Senecio inaequidens ) and Jacob's ragwort ( Senecio jacobaea ). There is also information on Canadian fleabane ( Conyza canadensis ).
Occurrence
The species is found in North Africa, the Canary Islands, and southern, western and central Europe including Great Britain . In contrast, it is absent in Scandinavia, in Eastern and Southeastern Europe. In Germany, the beetles are mainly found in the southwest. In the north it is distributed as far as Lower Saxony. The species, which used to be relatively rare, is about to spread further in Europe. In addition to rising temperatures, the rapid spread of the narrow-leaved ragwort ( Senecio inaequidens ), a preferred host plant of the species, is responsible for the rapid spread to the north and east . In some regions of Germany, such as Westphalia or Bavaria, the species has spread again after decades of absence. It is now spreading to Eastern Europe, as it was first detected in the Ukraine in 2016.
Web links
Individual evidence
- ↑ a b Johannes Reibnitz: CHRYSOMELIDAE, leaf beetle, Longitarsus dorsalis (Fabricius, 1781), bright-edged long-footed earth flea . The beetle fauna of southwest Germany - ARGE SWD Koleopterologen. Retrieved November 28, 2017.
- ↑ Dave Hubble, Jenny Wallace: Longitarsus dorsalis (Fabricius) (Chrysomelidae) new to Nottinghamshire . The Coleopterist 21 (2), September 2012. February 6, 2014. Retrieved November 28, 2017.
- ↑ a b c European beetles - Longitarsus . coleo-net.de. Retrieved November 28, 2017.
- ^ Longitarsus dorsalis . naturesport.org.uk. Retrieved November 28, 2017.
- ^ Longitarsus dorsalis (Fabricius, 1781) (a flea beetle) . bioinfo.org.uk. Retrieved November 28, 2017.
- ↑ Maurizio Biondi (1996): Proposal for an ecological and zoogeographical categorization of the mediterranean species of the flea beetle genus Longitarsus. Berthold. In: PHA Joliuet and ML Cox (editors): Chrysomelidoe Biologv, vo1.3: General Studies: 13-35. ISBN 978-90-5103-123-2
- ↑ a b Longitarsus dorsalis (Fabricius, 1781) . Fauna Europaea. Retrieved November 28, 2017.
- ↑ Ron Beenen, Alain Roques (2010): Leaf and Seed Beetles (Coleoptera, Chrysomelidae). Chapter 8.3 in: A. Roques et al. (Editors): Alien terrestrial arthropods of Europe. BioRisk 4 (1): 267-292. doi: 10.3897 / biorisk.4.52
- ↑ AV Gontarenko (2016): First records of Longitarsus dorsalis (Fabricius, 1781) (Coleoptera: Chrysomelidae) from Ukraine. Kharkov Entomological Society Gazette 24 (1): 31.