Pinker's speedy runner
| Pinker's speedy runner | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Trechus pinkeri | ||||||||||||
| Ganglbauer , 1891 |
Pinker's nimble runner ( Trechus pinkeri ) is a flightless beetle from the family of ground beetles (Carabidae). It is named in honor of the Austrian entomologist Rudolf Pinker (1847–1934).
description
Pinker's nimble runner is 3.5–3.8 mm long, light or yellow-brown beetle, without a clear iridescent glow. Its pronotum is sharply narrowed towards the base, the rear corners sharply acute. The head and pronotum are dull. The wing covers are arched on top and elliptical or egg-shaped. The microsculpture of the wing covers is cross-meshed, which can be seen at 100x magnification. The eyes are very small and have a much shorter longitudinal diameter than the length of the temples from the eyes to the neck constriction.
Way of life
The way of life of Pinker's nimble runner has hardly been studied. Adult beetles are observed between April and September, but most often in mid-summer. Immature, incompletely cured individuals are found in the fall, suggesting that the larva develops in summer and then hibernates as a beetle.
habitat
Pinkers nimble runner loves humid habitats ( hygrophil ). It occurs in different alpine habitats. The focus of occurrence is in beech forests and spruce-fir-beech forests, where moist beech litter layers are colonized, in littered mountain pine, in high-montane to subalpine green alder bushes and in alpine wet habitats such as snow valleys, snow soils, boulder and rubble heaps, where the beetle lives under humus-embedded stones.
distribution
The beetle has no wings and needs a lot of moisture and is therefore only able to spread to a limited extent. It is therefore a subendit of the Northern Alps, which occurs at an altitude of 900 to 2200 meters. The highest known occurrence is on the Großer Buchstein in the Gesäuse mountains at an altitude of 2210 meters. Its distribution area extends from the Ennstal Alps to the Untersberg in the Berchtesgaden Alps . Between these mountains there are large areas such as the Dachstein massif and the Tennengebirge in which the beetle does not occur. On the other hand, there are also isolated relict populations reaching far into the foothills of the Alps, such as on the Schoberstein southwest of Steyr.
swell
- Thomas Frieß, Werner Holzinger, Christian Komposch, Wolfgang Paill: Animal endemics in the Gesäuse National Park. ÖKOTEAM - Institute for Faunistics & Animal Ecology. Graz, December 22nd, 2006 (PDF; 1.3 MB)
- Trechus pinkeri In: Arved Lompe: The beetles of Europe. A determination work on the Internet. Established in September 2002