Quedius lateralis
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Quedius lateralis on tree sponge |
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| Scientific name | ||||||||||||
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| ( Gravenhorst , 1802) |
Quedius lateralis is a beetle from the family of Rove and the subfamily Staphylininae . The genus Quedius is represented in Europe with over 150 species. The species Quedius lateralis belongs to the subgenus Microsaurus , which is represented in Europe with over 40 species.
The name of the subgenus Microsaurus is from Old Gr. μικρός, mikrós "small" and σαύρος, sāūros "lizard" derived. The species name lateralis ( Latin ) means "concerning the side". It may refer to the yellow-brown stripe on the sides of the wing covers. The origin of the generic name Quedius is unknown. Synonyms are not in use.
Characteristics of the beetle
The ten to fourteen millimeter long beetle is almost entirely black, the wing covers and legs occasionally dark brown. Only the underlaid part of the elytra, especially in the front half, is brownish yellow (Fig. 1). The yellow color runs upwards in front, so that it can also be seen from above on the front corners of the wing covers. The difference between the shiny head and pronotum and the matt wing covers is particularly striking.
When viewed from above, the head is rounded and constricted at the back like a neck. The lateral eyes (Fig. 2, C) are only flatly arched and relatively small, their diameter about as large as the distance between their rear edge and the neck constriction (Fig. 2, double arrow D). Near the inner edge of the eye there is a point in the front and in the back where a bristle hair arises ( pore point ) and the front and rear forehead point (Fig. 2, 1 and 2) is named. A central pore point is missing. There are further pore points behind the rear forehead point. The head and mouthparts are stretched forward. The upper jaws arise very close to the front edge of the eyes (Fig. 2, B). They are long, pointed and curved. The end link of the jaw probe is the same length as the penultimate link. The end links of the lip and jaw buttons are simply pointed, not ax-shaped.
The pearl-like antennae have eleven elements. They are articulated at the front of the head (Fig. 2, A); viewed from above, the articulation point is hidden under the outer corner of the head shield . The turning points are closer together than the outer edges of the mandible base (Fig. 2, A and B). Their distance to each other is greater than the distance to the eyes. The first antenna segment is long, but shorter than the two following combined. The first to third links are elongated, the following ones almost square. The end link is longer and pointed. Three to four base parts of the antennae are lightened yellow.
The intensely shiny pronotum is strongly arched, the front corners hang almost vertically downwards. The edge of the page is turned under in such a way that it is no longer visible even in a side view. The pronotum is only margined on the sides and back. It has a system of pore points on the front half.
The wing-coverts, which are strongly shortened as in all short-winged birds, are roughly square and confusedly dotted together. The microstructure is characterized by very small dots between the points. In addition, the wing covers are finely hairy and appear dull. The triangular label is not dotted.
The abdomen is slightly rounded, the edges are sharp upwards.
The front hips are long and stronger than the thighs . The middle hips are a little apart, the rear hips touch. The tarsi are all five-limbed, the front tarsi are clearly widened in both sexes. In the middle and hind tarsi, the first link is significantly longer than the following. The long claw link has relatively fine and slightly curved claws with a very weak tooth at the base.
biology
The typical habitat is near mushrooms on dead or living wood in park-like, loose vegetation, but it can also be found in numerous other places, for example in fungal fallen leaves in chestnut or beech forests or in compost . The adults are most common in September and October, but can be seen until early spring.
distribution
The species is widespread in Europe except in the northeast. In southern Europe it is only absent on most of the Mediterranean islands, in the west only in Ireland . In the north, the beetle is only found in Norway . To the east, the distribution area reaches the Black Sea , but there are no reports from Bulgaria . Outside of Europe, the beetle has been reported from the Middle East .
literature
- Heinz Joy, Karl Wilhelm Harde, Gustav Adolf Lohse: The beetles of Central Europe . Volume 4 Staphylinidae I Goecke & Evers Verlag, Krefeld, 1964
- John Curtis British Entomology Vol. 1 S 638 as a Google e-Book
- Valentin Gutfleisch Die Käfer Deutschlands 1859 p. 131 f as Google eBook
Individual evidence
- ↑ a b Quedius lateralis in Fauna Europaea. Retrieved October 27, 2011
- ↑ Microsaurus (subgenus) in Fauna Europaea. Retrieved October 31, 2011
- ↑ Sigmund Schenkling: Explanation of the scientific beetle names.
