Phyllobius

Pairing of Grünrüsslern

The Grünrüssler ( Phyllobius ) are a genus of beetles in the family of weevils ( Curculionidae ).

The name Grünrüssler comes from the fact that many species of the genus Phyllobius appear by squamation green. It is often through a large color variance to olive tones. However, if the squamation scuffed over time, the dark color of the chitin first appears in places, then a large area. So a brown animal can also belong to a green Rüsslerart. There are also brown species of the genus.

Physique

Most species are less than a centimeter and greenish appearing by squamation.

The short snout looks when viewed from above rectangular and is only slightly narrower than the rest of the head. The pronotum is only slightly arched broad and bell-shaped. the elytra are markedly wider and sit down with the pronounced shoulders significantly from the neck shield from. The labels lying between the approach of the elytra is clearly visible and triangular. The elytra widen towards the rear until the last third light and then run an almost straight line to a peak together.

Phyllobiusarten have no tongue, the two pairs of jaws are exposed. The sensor is oval pit, viewed from above, and only weakly emarginate. The sensors are remarkably long and thin, the first antennal segment ( the shaft ) reaches at least the front edge of the eyes, the angled hostage consists of seven members clearly visible and the final leg consists of 4 members. The eyes are round and laterally.

The legs are strong, overgrown claws at the base together. The front legs are slightly bent inward, on the inside is usually a visible spine.

Possibility of confusion

Frequently Phyllobiusarten be confused with species of Polydrusus or consciously taken together because of their ecological equality. The serious systematic difference lies in the shape of the sensor hole. The sensor mine is the depression in the trunk, in which the probe is deflected. Thus, the beetles, the sensor may be applied at the body protectively, the sensor pit discharges often in a groove, into which the shank of the probe comes to rest. In Phyllobius this groove is only indicated by a bulge of the sensor pit at the trunk top ( Fig. 1), it runs at Poydrusus pronounced on the trunk side in the direction under the eyes ( Fig. 2). Therefore Phyllobius and Polydrusus are not only different species, but they are even different subfamilies of weevils on.

System

The individual types differ by the hair and color and shape of the scales. The slow resulting interest in this beetle group is reflected in the fact that even

  • In CG Calw 's BEETLE BOOK Hoffmann's book printing company in Stuttgart in 1876 only 6 Central European species are given in E. Reitter, 1916, already find 18 species for the German Reich and joy - Harde - Lohse 25 species of Central Europe are given.

Today the genus Phyllobius in Europe is represented by 86 species and subspecies. In Germany it occurred on 15 species.

  • Phyllobius achardi Desbrochers, 1873
  • Phyllobius aetolicus apple Beck, 1901
  • Phyllobius alpinus Stierlin, 1859
  • Phyllobius arborator (Fall, 1797)
  • Silver Grünrüssler ( Phyllobius argentatus (Linnaeus, 1758) )
  • Phyllobius betulinus ( Bechstein & Scharfenberg, 1805)
  • Phyllobius brenskei Schilsky, 1911
  • Phyllobius brevis Gyllenhal, 1834
  • Phyllobius bulgaricus apple Beck, 1916
  • Phyllobius canus Gyllenhal, 1834
  • Phyllobius crassipes Motschulsky, 1860
  • Phyllobius cupreoaureus Stierlin, 1861
  • Phyllobius cylindricollis Gyllenhal, 1834
  • Phyllobius dispar Redtenbacher, 1849
  • Phyllobius emeryi Desbrochers, 1873
  • Phyllobius emgei Stierlin, 1887
  • Phyllobius etruscus Desbrochers, 1873
  • Phyllobius euchromus Reitter, 1885
  • Phyllobius fessus Boheman, 1843
  • Phyllobius flecki Reitter, 1906
  • Phyllobius fulvago Gyllenhal, 1834
  • Phyllobius fulvagoides Reitter, 1885
  • Phyllobius ganglbaueri apple Beck, 1916
  • Phyllobius glaucus ( Scopoli, 1763); Syn Phyllobius calcaratus (Fabricius, 1792)
  • Phyllobius haberhaueri apple Beck, 1916
  • Phyllobius insidiosus Pesarini, 1981
  • Phyllobius insulanus Schilsky, 1911
  • Phyllobius jacobsoni Smirnov, 1913
  • Phyllobius Korbi Schilsky, 1908
  • Phyllobius lateralis empires, 1857
  • Phyllobius leonisi Pic, 1902
  • Phyllobius longipilis Boheman, 1843
  • Phyllobius maculicornis Germar, 1824
  • Phyllobius meschniggi Solari, 1938
  • Phyllobius montanus Miller, 1862
  • Phyllobius noesskei apple Beck, 1916
  • Phyllobius nudiamplus Reitter, 1916
  • Phyllobius oblongus (Linnaeus, 1758)
  • Phyllobius pallidus (Fabricius, 1792)
  • Phyllobius pellitus Boheman, 1843
  • Phyllobius peneckei Solari, 1931
  • Phyllobius pilicornis Desbrochers, 1873
  • Phyllobius pilipes Desbrochers, 1873
  • Nettle Blattrüssler ( Phyllobius pomaceus Gyllenhal, 1834)
  • Phyllobius pyri (Linnaeus, 1758)
  • Phyllobius quercicola apple Beck, 1916
  • Phyllobius raverae Solari & Solari, 1903
  • Phyllobius rhodopensis apple Beck, 1898
  • Phyllobius roboretanus Gredler, 1882
  • Phyllobius rochati Pesarini, 1981
  • Phyllobius romanus Faust, 1890
  • Phyllobius schatzmayri Pesarini, 1981
  • Phyllobius seladonius Brullé, 1832
  • Phyllobius squamosus C. Brisout, 1866
  • Phyllobius subdentatus Boheman, 1843
  • Phyllobius thalassinus Gyllenhal, 1834
  • Phyllobius transsylvanicus Stierlin, 1894
  • Phyllobius tuberculifer Chevrolat, 1865
  • Phyllobius valonensis apple Beck, 1916
  • Phyllobius versipellis apple Beck, 1916
  • Phyllobius vespertilio Faust, 1884
  • Phyllobius vespertinus (Fabricius, 1792)
  • Phyllobius virideaeris ( Laicharting, 1781)
  • Phyllobius viridicollis (Fabricius, 1792)
  • Phyllobius xanthocnemus Kieswetter, 1852

Biology

The beetle ( Imagines ) feed on leaves of various trees, shrubs and herbaceous plants. The adult animal appear in spring and early summer, then often en masse. Since some types of chew the buds of fruit trees, they can be harmful. Almost all species are not fixed in their choice of food plants ( polyphagous ). Some species prefer willows and poplars, other Rosaceae. This subheading covers the types that can be harmful in apricot or plum orchards. In one type of grass is specified as a food plant. In other species, an indication is missing. The larval development of Grünrüsslers takes place in the soil, the larvae feed on plant roots.

Polyphaga Ernst Friedrich Germar
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