Five-spotted asparagus beetle
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Five-spotted asparagus beetle ( Crioceris quinquepunctata ) |
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| Crioceris quinquepunctata | ||||||||||||
| ( Scopoli , 1763) |
The five-spotted asparagus beetle ( Crioceris quinquepunctata ) is a beetle from the family of leaf beetles (Chrysomelidae) and the subfamily of Criocerinae . Of the seven European species of the genus Crioceris , four are found in Central Europe and the five-spotted asparagus beetle, together with Crioceris duodecimpunctata and Crioceris quatuordecimpunctata, is one of the three red species with black spots.
The genus name Crioceris is from Altgr. κριός “kriós” for “ram” and κέρας “kéras” for “horn”. The species name quinquepunctata ( Latin ) means "with five points". As a rule, there are two points on the side of each wing cover. A large fifth spot lies halfway in the front half of each wing cover. The part of the name “asparagus” refers to the host plant, the part of the name “chicken” alludes to the chirping tones that the Crioceris species can produce by rubbing grooved ridges against each other on the abdomen segment and the underside of the wing cover .
Characteristics of the beetle
The beetle is five to six millimeters long. The head and pronotum are about the same width and significantly narrower than the nearly parallel elytra . Compared to the other Crioceris species, the drawing of the black and red animal varies little.
The black head is protruding, the arched forehead has a deep central furrow. The mouthparts point downwards at an angle. The mandibles are simply pointed. The matt black eleven-part feelers are cord-shaped, the individual parts set off from one another. They are turned in front of the bulging eyes, but their distance at the base is smaller than the distance between the eyes. The antennae are shorter than half the body length.
The pronotum is rounded everywhere and has no side edge. It usually has no blemishes, but can have a more or less punctiform stain near the base.
The elytra are significantly less than twice as long as together wide. The sides are almost parallel, the two wing covers are rounded together at the back. They are streaked dotted . Each wing cover has a point (flaw) on the side in front of the shoulder bulge and in front of the tip, whereby the rear flaw can also be broken down into two small points. Characteristic is the blackening of the wing cover seam , which expands in front of the center to a large black spot of very variable shape. The black stripe along the wing cover seam is narrow behind this spot (only up to the first point stripe), in front of the spot more than twice as wide. The label is also black.
The short legs are black. The tarsi are all four-part. The penultimate tarsal link is lobed. The imperforate claws are not fused together at the base, but arise separately on the tarsal phalanx.
biology
The beetles can be found on asparagus from April to June , where the larvae also develop (Fig. 2). According to its host plant, the species occurs in warm, sunny and dry places.
distribution
The species is common in south-east Europe. In Central Europe it reaches Austria and Bavaria in the north. The distribution area lies within that of Crioceris quatuordecimpunctata . The species also reaches France to the west, but does not spread to Asia to the east. In Germany the beetle is classified as "critically endangered" (category 1).
literature
- Heinz joy, Karl Wilhelm Harde, Gustav Adolf Lohse (ed.): The beetles of Central Europe . tape 9 . Cerambycidae Chrysomelidae . Spektrum Akademischer Verlag, Munich 1999, ISBN 3-8274-0683-8 (first edition: Goecke & Evers, Krefeld 1966).
- Klaus Koch : The Beetles of Central Europe . Ed .: Heinz Freude . tape 3 : ecology . Goecke & Evers, Krefeld 1992, ISBN 3-87263-042-3 .
- Edmund Reitter : Fauna Germanica, the beetles of the German Empire, Volume IV, KGLutz 'Verlag, Stuttgart 1912
Individual evidence
- ↑ a b Crioceris quinquepunctata in Fauna Europaea. Retrieved September 29, 2012
- ↑ Crioceris at Fauna Europaea. Retrieved September 27, 2012
- ↑ Sigmund Schenkling: Explanation of the scientific beetle names (genus)
- ↑ Sigmund Schenkling: Explanation of the scientific beetle names (species)
- ^ Adolf Horion : Käferkunde for nature lovers . Vittorio Klostermann, Frankfurt am Main 1949
- ↑ Klaus Koch : The beetles of Central Europe . Ed .: Heinz Freude . tape 3 : ecology . Goecke & Evers, Krefeld 1992, ISBN 3-87263-042-3 .
- ↑ Red List Germany
