Brown binding ram
| Brown binding ram | ||||||||||||
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Brown-tied carpenter, female |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Acanthocinus griseus | ||||||||||||
| ( Fabricius , 1792) |
The Brown Room cohesive Bock ( Acanthocinus griseus ) is a beetle from the family of the longhorn beetle and the subfamily Lamiinae .
The genus name Acanthocinus is from Altgr. ἄκανθα "ákantha" derived for "thorn". It refers to the pointed thorn on each side of the pronotum . The species name griseus from ( lat. ) Grísĕus for gray distinguishes the beetle from the similarly colored but rather brown carpenter's buck . The beetle is called "Braunbindig" because of the brown cross bars on the wing covers, instead of "Braunbindiger Zimmerbock" one also reads "Braunbindiger Zimmermannsbock".
The species is listed under category 3 (endangered) in the Red List of Endangered Species in Germany . In Bavaria it is considered extinct. In Brandenburg it is on the pre-warning list as potentially endangered. In Saxony and Thuringia , too , it is considered very rare and therefore potentially endangered. In Saxony-Anhalt it is classified as endangered (category 2).
Characteristics of the beetle
The color-variable, brown to gray beetle reaches a length of nine to twelve millimeters. The body is elongated and only slightly arched. The drawing is created by the very short gray hair falling backwards on a brown to black background.
The head points downwards perpendicular to the body axis (Fig. 2). The eyes encompass only about half of the eleven-segment antennae (Figs. 1 and 2). In the female, the antennae are one and a half times as long as the body (Fig. 4), in the male more than twice as long (Fig. 5). There are no long protruding hairs on the antennae, but the third to fifth antennae segments are dense and downy with short hairs on the underside of the males (Fig. 3). The first antenna element is simple, slightly towards the end, but not thickened in a pear shape and without a ledge or crescent-shaped flattening. The second antenna element is short. All antennae are light brown at the base and dark brown at the tip, making the antennae appear curled. The end part of the jaw probe is pointed.
The pronotum (Fig. 1) is much wider than it is long and has a slender and pointed spine in the middle that points slightly backwards. On the top, in front of the thorns, is a row of four yellow tomentose spots. The pronotum is punctured but not wrinkled.
In contrast to Acanthocinus reticulatus, the wing covers have no longitudinal ribs with tufts of hair. They are almost three times as long as they are wide together. They run roughly parallel, are only slightly arched outwards and narrowed towards the rear and each end is rounded. The drawing with two darker horizontal stripes is similar to the carpenter's jig , but more contrasting. The front horizontal stripe is often dissolved and the end of the wing cover can also be dark (see taxo picture). The puncturing is coarse and dense, especially near the base, but less dense and coarse than in Acanthocinus carinulatus . In the female, the elytra leave an elongated laying tube uncovered (taxo picture and Fig. 4).
The tarsal segments are alternately ringed light and dark (Fig. 6). In contrast to Acanthocinus aedilis, the first tarsal segment of the metatarsus is longer than the other tarsal segments together. In all tarsi, the fourth segment of the tarsi is hidden between the lobed extensions of the third segment, the tarsi therefore appear to be four-segmented.
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Fig. 3: 4th antenna segment from the inside in the male |
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| Fig. 1: Head and pronotum | Fig. 4: Underside of female |
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| Fig. 5: Male on the side | |
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| Fig. 2: Front view |
Fig. 6: Hind tarsus T: splint 1–5: first to fifth tarsal segment |
biology
The species is counted as a saproxylophage insect, as the larvae feed on dying wood. The larvae develop in spruce , fir and (mainly) pine . The females lay the eggs in thin sections of the bark of dead branches, stumps of freshly felled trees and also in trees damaged by forest fire. Separated branches lying on the ground with a diameter of at least three centimeters are also accepted. Initially, the larva eats directly under the bark in the cambium . Later the feeding tunnels lead through the outer sapwood . The doll's chamber is usually created in the sapwood, occasionally it extends into the heartwood . The doll's chamber is slightly curved, its entrance clogged with pegs. Pupation takes place in May and June. The adults hatch about a month later. The larvae probably need two years to develop.
The animals are crepuscular and nocturnal and like to fly at light traps.
distribution
The boreomontane species occurs in Central Europe mainly in the mountains and is rare there. You can find them here from June to September. In Northern Europe, the beetle is widespread, but rare ( Sweden , Finland , Norway ). The species is absent in Denmark and Great Britain . The southern border of the distribution area stretches from the Pyrenees over the Alps , the Carpathians and the Dinaric Mountains over northern Greece to Asia Minor . The species is also reported from various parts of Siberia, the Far East, and Japan. The beetle can easily be carried away with firewood or in the wake of globalization, for example in wooden transport pallets .
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
- Svatopluk Bílý, O. Mehl: Longhorn beetles (Coleoptera, Cerambycidae) of Fennoscandia and Denmark. Brill Academic Pub (August 1997), ISBN 90-04-08697-8
Individual evidence
- ↑ Acanthocinus griseus in Fauna Europaea. Retrieved January 8, 2012
- ↑ Sigmund Schenkling: Explanation of the scientific beetle names.
- ↑ Red lists at BioNetworkX
- ↑ S. Markalas: "Bark and wood-boring insect species in pines ( Pinus halepensis , P. brutia and P. nigra ) after forest fires in Greece" Anzeiger fur Pestkunde Volume 64, Number 4, 72-75, doi: 10.1007 / BF01906166 .
- ↑ PDF of the EUROPEAN AND MEDITERRANEAN PLANT PROTECTION ORGANIZATION ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ Becker, G. (1969) "About wood-destroying insects in Korea" Journal for Applied Entomology, 64: 152-161. doi: 10.1111 / j.1439-0418.1969.tb03034.x .
- ↑ He Li, Guo Ying Zhou, Ju Nang Liu, Huai Yun Zhang: "Study on Pine Wilt Disease and its Control Situation" Applied Mechanics and Materials (Volumes 55 - 57) 10.4028 / www.scientific.net / AMM.55-57.567
- ↑ Rudi Glenz: "About a" garage occurrence "of Acanthocinus griseus (F.) in Lower Bavaria" NachrBl. bayer. Ent. 46 (1/2), 1997 as PDF
