Anastrangalia dubia
Schwarzgesaumter Longhorn ♂ on Brombeerblüte
The Schwarzgesaumte Longhorn or Longhorn Schwarzrandiger ( Anastrangalia dubia outdated, Leptura dubia ) is a beetle of the family of longhorn beetle and the subfamily Lepturinae. He is one of many similar small longhorn beetle species that were summarized earlier in the genus Leptura. The individual specimens vary greatly in their appearance.
The type shall be listed in the Red List of the states of Saxony -Anhalt and Thuringia as extinct or lost in Saxony as endangered.
Remarks about the name and systematics
The part of the name " Longhorn " indicates the affiliation of the way to the narrow blocks, the name part " schwarzgesaumt " or " schwarzrandig " refers to the black outer edge of the elytra in males. The epithet dubia (from Latin dubius, doubtful) alludes to the fact that his position in the first description was not sure. The species was described by Scopoli in 1763 for the first time and found to be Leptura dubia in the genus Leptura. Scopoli writes after the diagnosis of type: priority in various vere a? to proles hybrida Melanurae & Vexillatae? (lat. it different really from the previous (type)? Or is it a crossroads of melanura and vexillata? ). The genus Anastrangalia ( altgr. άνα -ana = reinforcing, adventitious to the genus Strangalia ) was not until 1924 that appended by Casey as a new subgenus of the genus Strangalia. Casey charakteriesiert standing Anastrangalia as between Strangalia and Brachyleptura. In the standard work Joy Harde Lohse the name is changed only in the third supplementary volume of Leptura dubia dubia to Anastrangalia. The genus comprises Anastrangalia in Europe, four species, thirteen species worldwide.
Characteristics of the beetle
The beetle reaches a length of nine to 16 millimeters. The body and the antennae are entirely black.
The pronotum is narrow, not expanded laterally hunchbacked. Behind the front edge it is clearly cut off. The rear corners are rounded, not extended pointed.
The elytra in the male are yellowish-brown with a more or less wide black side stripes. Also the tip of the elytra and the elytra are black seam. In the female the elytra are red with black lace and side edge, Full black specimens are more common in females, with the males very rare. The elytra are punctured finely and evenly. They are yellow hairy and dull, in males they can also be shiny.
The temples are long and extended back -like to the back. The bell-shaped pronotum is constricted at the front edge and distinctly longer than wide. In the back it has in the center a flat longitudinal furrow
Biology
The adults appear in central Europe from June to August. The montane to subalpine occurring species are found equally on flowers as well as on wood, most common on clearcuts with rich herb flora. Among the flowers Umbelliferae are mainly served under the timbers felled trunks and Holzklafter of spruce, fir and pine trees are preferred.
The larva develops in conifers ( spruce, fir and pine ). For developing it takes two to three years. The adult beetles appear from June to August.
Dissemination
The species is not only widely used in Europe, but also in parts of North Africa and the Caucasus and in northern Iran.