Canthophorus impressus

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Canthophorus impressus
Systematics
Subordination : Bed bugs (heteroptera)
Family : Earth bugs (Cydnidae)
Subfamily : Sehirinae
Tribe : Sehirini
Genre : Canthophorus
Type : Canthophorus impressus
Scientific name
Canthophorus impressus
( Horváth , 1881)

Canthophorus impressus is a bug from the family of earth bugs (Cydnidae).

features

The bugs are 6.0 to 8.0 millimeters long. They are shiny dark metallic blue and have a white border on the pronotum and on the corium of the hemielytras as well as an alternating white and black colored connexive . The species can only be distinguished from Canthophorus dubius by genital morphological investigations.

distribution and habitat

The species is distributed from the mountains of southern Europe over the Pyrenees , the Alps and the Carpathian Mountains east to southern Central and Eastern Europe and east to Siberia and Central Asia. In Central Europe, the species occurs predominantly in the Alpine region, where it can also be found far above the tree line up to around 2500 meters above sea level. In Germany you can find them in the low mountain ranges and otherwise only in the south to Rhineland-Palatinate, Hesse, Northern Bavaria and Thuringia. The northernmost find so far comes from 1999 from southern Saxony-Anhalt. It is common in places, otherwise only locally widespread and rare. Recently the species was also found in England, where it has probably not been differentiated from Canthophrous dubius .

Way of life

Like Canthophorus dubius , with whom it can also appear in association, the species lives on flax leaf species ( Thesium ), especially on alpine flax leaf ( Thesium alpinum ) and mountain flax leaf ( Thesium bavarum ). The development is similar to that of Canthophorus dubius . In England, the bugs are found on the lying flax leaf ( Thesium humifusum ), which only grows on calcareous soils in the south of England ( Oxfordshire , Wiltshire , Dorset and Hampshire ). It occurs there in one generation and the nymphs can be observed until July, often together with the animals of the parents' generation. The species is on the decline in England and has already disappeared in several counties.

supporting documents

Individual evidence

  1. ↑ a b c d Wachmann: Bugs , Vol. 4, p. 15
  2. ↑ a b c Canthophorus impressus. British Bugs, accessed June 20, 2014 .
  3. ↑ Wachmann: Wanzen , Vol. 5, p. 50

literature

  • Ekkehard Wachmann , Albert Melber, Jürgen Deckert: Bugs. Volume 4: Pentatomomorpha II: Pentatomoidea: Cydnidae, Thyreocoridae, Plataspidae, Acanthosomatidae, Scutelleridae, Pentatomidae. (=  The animal world of Germany and the adjacent parts of the sea according to their characteristics and their way of life . 81st part). Goecke & Evers, Keltern 2008, ISBN 978-3-937783-36-9 .
  • Ekkehard Wachmann , Albert Melber, Jürgen Deckert: Bugs. Volume 5: supplement volume. Dipsocoromorpha, Nepomorpha, Gerromorpha, Leptopodomorpha, Cimicomorpha and Pentatomomorpha. (=  The animal world of Germany and the adjacent parts of the sea according to their characteristics and their way of life . 82nd part). Goecke & Evers, Keltern 2012, ISBN 978-3-937783-58-1 .

Web links