Gehringia olympiaca
| Gehringia olympiaca | ||||||||||||
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Gehringia olympiaca |
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| Systematics | ||||||||||||
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| Scientific name of the subfamily | ||||||||||||
| Gehringiinae | ||||||||||||
| Darlington , 1933 | ||||||||||||
| Scientific name of the genus | ||||||||||||
| Gehringia | ||||||||||||
| Darlington , 1933 | ||||||||||||
| Scientific name of the species | ||||||||||||
| Gehringia olympiaca | ||||||||||||
| Darlington , 1933 |
Gehringia olympiaca is the only described species of the subfamily Gehringiinae within the beetle family ofground beetles (Carabidae).
features
The beetles are 1.6 to 1.7 millimeters long and black. The upper side of the body is structured in a scattered point-like manner, with each pit being bristled. The compound eyes have large, convex facets. The pearl-shaped antennae are short and hairy except for the scapus . The pronotum is clearly tapered backwards. The upper wings are loosely structured in irregular rows, the edges are one below the other. The tip of the wing is truncated and leaves the last tergite free. The membranous wings (alae) are well developed and fringed on the edge. The abdomen lacks a separate sclerite between the hips ( coxes ) of the middle legs. The last, seventh sternite is somewhat shortened and has a very slightly convex rear edge.
The larvae are about 1.2 millimeters long. They are very similar to those of the subfamily Trechinae . Your body is weakly sclerotized , so this cannot be seen on the tergites and sternites of the abdomen. The head is almost square and has parallel sides. Point eyes ( ocelli ) are not developed. The antennae have three strong basal segments, the fourth segment is slender. The mandibles are sickle-shaped. The galea is two-segmented, the second segment being very slender, the lacinia absent. The prothorax is significantly larger than the meso- and metathorax . The legs are short.
Occurrence and way of life
The species is widespread in northwest North America and colonizes gravel banks on the banks of small to medium-sized mountain streams with cold water. The animals live in the damp gravel and coarse sand and avoid coming to the surface. The eggs are laid in early summer.
supporting documents
Individual evidence
- ↑ a b c Rolf G. Beutel, Richard AB Leschen: Handbuch der Zoologie - Coleoptera, Beetles, Volume 1: Morphology and Systematics (Archostemata, Adephaga, Myxophaga, Polyphaga partim) . 1st edition. de Gruyter , 2005, ISBN 3-11-017130-9 , p. 128 f . (English).
literature
- Rolf G. Beutel, Richard AB Leschen: Handbuch der Zoologie - Coleoptera, Beetles, Volume 1: Morphology and Systematics (Archostemata, Adephaga, Myxophaga, Polyphaga partim) . 1st edition. de Gruyter , 2005, ISBN 3-11-017130-9 (English).
