Little maple buck
| Little maple buck | ||||||||||||
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Little maple buck |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Ropalopus macropus | ||||||||||||
| ( Germar , 1824) |
The Small Maple Bock ( Ropalopus macropus ) is a beetle from the family of the longhorn beetle and the subfamily Cerambycinae .
The species is listed in the Red List of Endangered Species in Germany and in the State of Bavaria under Category 1 (threatened with extinction).
Notes on the name and taxonomy
The name Kleiner Ahornbock differentiates the beetle from the similar large maple buck ( Ropalopus clavipes ). Both are not found on maples, such as Ropalopus ungaricus
The species was first described in 1824 by Germar under the name Callidium macropus . The species name "macropus" (from ancient Greek μακρός makrós, large and πούς pōūs, foot.) Indicates the relatively long legs. The genus Ropalus was separated from the genus Callidium because an extension of the front breast separates the front hips. The generic name R (h) opalopus (from ancient Greek ρόπαλος rhópalon, club and πούς. Pōūs, foot) refers to the club-like thickened legs.
In Europe, the genus Ropalopus is represented with eight species, worldwide with twenty species in three subgenera.
Characteristics of the beetle
The elongated body of the small maple buck is flat, solid black and dull. It reaches a length of 8 to 14 millimeters.
The end links of the lip and jaw buttons are ax-shaped (Fig. 6). The compound eyes are deeply edged and finely faceted by the feeler base (the facets are not yet clearly visible at ten times magnification). The inner edges of the eyes (blue on the right in Fig. 5) are closer together on the vertex than the base of the antennae (green on the right in Fig. 5). The antennae are widened at the tip, but not drawn out into a mandrel (Fig. 7). The third antenna segment is significantly longer than the fourth. The third and fourth antennae are together significantly longer than the fifth. The pronotum is wider than it is long and has dense wrinkled dots (Fig. 6). Seen from above it is disc-shaped, on the side a hump is at most indicated.
The wide and flat wing-coverts are matt gray. They taper significantly towards the rear in the male, but hardly in the female. The tip of the elytra is rounded together.
The front hips are brought closer together, but separated from one another by a narrow extension of the front chest (Fig. 4). The joint cavities of the front hips are open to the rear. The middle and hind legs are stalked and thickened like a club at the end. The tarsi appear to be four-limbed (pseudotetrameric) because the fourth limb is very small and hidden between the lobes of the third limb (best seen in Fig. 6 on the left forefoot). The claws are imperforate.
 Fig. 1: Side view Fig. 2: Front view Fig. 3: Pairing   |
 Fig. 5: Underside Fig. 3: Head, added blue on the right : Inner edge of the eye green: Inner edge of the feeler base Fig. 6: Section of the top Fig. 7: Feeler links 2 - 6    |
biology
The warmth-loving species can be found on fragile deciduous trees and brushwood piles, occasionally also on wooden fences or on the flowers of the hawthorn . But it hardly ever occurs on maple trees .
The larva develops in various other deciduous trees such as willow , linden, as well as oak , elm and fruit trees in dry branches. It takes two years to develop. The adult beetle appears in Central Europe in June and July. You can find it on piles of brushwood, but also on flowering bushes.
distribution
The distribution area of the Kleiner Ahornbock stretches from Germany southeast over Austria , the former Yugoslavia and Romania to the Black Sea, in a northeast direction over Poland and Belarus to central Russia . The species is also widespread in the Middle East and as far as Iran .
The beetle is rather rare in Central Europe.
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).
- Adolf Horion: Faunistics of the Central European Beetles, Bd. XII . Überlingen-Bodensee 1974
- Klaus Koch : The Beetles of Central Europe . Ed .: Heinz Freude . tape 3 : ecology . Goecke & Evers, Krefeld 1992, ISBN 3-87263-042-3 .
Web links
- ↑ a b Ropalopus macropus at Fauna Europaea. Retrieved December 22, 2010
- ↑ Red lists at BioNetworkX
- ↑ Sigmund Schenkling: Explanation of the scientific beetle names (species)
- ↑ Sigmund Schenkling: Explanation of the scientific beetle names (genus)
- ↑ Ropalopus at Fauna Europaea. Retrieved February 28, 2013
- ↑ Subgenera on Ropalopus at BioLib
- ↑ Cerambycidae of the West Palaearctic region
