Iberodorcadion seoanei
| Iberodorcadion seoanei | ||||||||||||
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Iberodorcadion seoanei |
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| Scientific name | ||||||||||||
| Iberodorcadion seoanei | ||||||||||||
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| Fig. 1: Front view | Fig. 2: side view |
Iberodorcadion seoanei is a beetle from the family of the longhorn beetle and the subfamily Lamiinae . The delimitation of the species of the genus Iberodorcadion is problematic, sub-genera were established and discarded. The species lists also differ considerably, the number is around 50 species. The species Iberodorcadion seoanei includes three subspecies according to Fauna Europaea.
Notes on the name
The species was first described by Graëlls in 1858 under the name Dorcadion Seoanei . Graëlls closes the Latin part of his description by stating the place where it was found and the words: where Seoane discovered it and told us that it would be found in June . Graells calls the animal after Seoane ( Latin Dorcadion Seoanei = Dorcadion des Seoane). He suspects that the species is identical to the species Dorcadion sulcatum by Dejean . However, since he does not know Dorcadion sulcatum from the Dejean collections and the description is insufficiently precise, he describes the beetle found by Seoane .
The genus Dorcadion (from ancient Gr . Δορκάδιον "dorkádion" for "small gazelle") is divided into five genera by Breuning in 1943 after the construction of the male sexual organs. Breuning remarked on the future genus Iberodorcadion as early as 1942: This subheading includes fulginator L., molitor F. atlantis Bed., And all species from the Iberian Peninsula. They form a natural group that is well defined by their geographical distribution . This explains the name Iberodorcadion , even if not all associated species are restricted to the Iberian Peninsula, but sometimes also occur in France and Morocco. Iberodorcadion is not classified as a genus by all authors, but in some cases as a subgenus.
Description of the beetle
The beetle shows the typical shape of an earth buck. It's black almost everywhere. The surface is roughly structured. The female is broader and more robustly built than the male. It is an average of fifteen millimeters long and six millimeters wide, the male only twelve millimeters and a width of six millimeters.
The head is very roughly punctured . The forehead slopes down vertically. It has an indistinct longitudinal furrow and, at the bottom of this furrow, a very fine but distinct groove that continues on the head to the pronotum. The base of the upper jaw and the upper lip are covered with brooches, these are slightly longer and reddish black on the front edge of the upper lip, otherwise black. The buttons are bare except for a few longer pockets on the joints. The eyes are reddish dark. They are strongly edged out at the front by the deflection of the antennae. The eleven-segmented, stable antennae are very short with velvety hairs, black on the base members, dark reddish towards the end.
The pronotum is also very coarse, irregular and partially wrinkled. Approximately in the middle of the sides of the pronotum, it has a pointed hump. There it is wider than it is long.
The elytra are coarse-grained, the grains are large, elongated and flat. They are oriented in different directions and cross each other. This creates an irregular mesh pattern. Three broadly raised ribs run parallel to the seam on each wing cover, which are particularly prominent near the base and disappear towards the end of the wing cover. The gaps are in the form of wide furrows. They are more or less dense with very short, rough, ash-gray wallets. As a result, the spaces on each wing cover form four gray stripes interrupted by the three black stripes of the ribs. This colored stripe is only partially valid, as the range of variation is large and the hairiness in the different subspecies is not uniform. There are no membranous wings.
The triangular label is wider than it is long.
The bottom and legs are evenly flat dotted. They are almost shiny and sparsely haired very short, reddish black, only the splints are a little more hairy on the outside near the tooth. The tarsi are all five-limbed with a very small fourth limb (pseudotetramer). The groove typical of the subfamily Lamiinae is located on the inside of the front rail. The claws and hairs of the tarsi are reddish black.
The three subspecies differ as follows. In the nominate C.seoanei seoanei the elytra seam is barely increased, the ribs increases excessively and the intervals on the wing covers little hairy, they appear shiny black. Also in the subspecies C. seoanei laurae the ribs are only moderately raised, but the whole body is golden tomentose and dull. On average, this subspecies is slightly larger than the other two. In the subspecies C. seoanei kricheldorffi , the ribs and the suture of the wing cover are greatly increased.
biology
The beetles appear soon after the snow melts.
distribution
The species is found almost exclusively in the mountainous region of the Galician part of the Cantabrian Mountains.
literature
E. Vives: Coleoptera Cerambycidae in MARamos et al. Fauna Iberica Volume 12 Editorial CSIC - CSIC Press, Madrid 2000 p. 331 ff
Individual evidence
- ↑ a b c Iberodorcadion seoanei at Fauna Europaea. Retrieved December 16, 2013
- ↑ Mario Tomé: "Revisión y propuesta de sinonimia de los subgéneros Iberodorcadion , Hispanodorcadion y Baeticodorcadion " ARACNET 10 - Bol. SEA, nº 31 (2002): 77-81 [1]
- ^ A b Taxon profile Iberodorcadion Breuning, 1943 BioLib, accessed December 17, 2013
- ^ Iberodorcadion at Fauna Europaea. Retrieved December 16, 2013
- ↑ Iberodorcadion at eol
- ↑ a b c d e Graells: Insectos nuevos de España in Guillermo Schulz (ed.): Memoria de los trabajos verificados en el año de 1855 Madrid 1858 Preview in the Google book search
- ↑ Sigmund Schenkling: Explanation of the scientific beetle names (genus) .
- ^ Stephan Breuning: Contribution to the evaluation of the genital organs for the systematics at Springer
- ↑ a b c Fauna Iberica Coleoptera: Cerambycidae Volume 12 Editorial CSIC - CSIC Press, 2000 p. 331 ff Preview in the Google book search
Web links
- http://entomologia.rediris.es/iberodorcadion/seoanei/seo1.html
- http://i58.servimg.com/u/f58/10/05/00/19/i_s_k10.jpg Distribution map Iberodorcadion seoanei kricheldorffi
- Photos subspecies
