Coelometopus clypeatus

Coelometopus clypeatus
Coelometopus clypeatus
Systematics
Order : Beetle (Coleoptera) Subordination : Polyphaga Family : Black beetle (Tenebrionidae) Subfamily : Coelometopinae Genre : Coelometopus Type : Coelometopus clypeatus
Scientific name
Coelometopus clypeatus
( Germar , 1813)

Fig. 1: Top view	Fig. 2: side view	Fig. 3: Bottom
Fig. 4 after Solier, partially colored; Fig. 1: top view; Fig. 2: head: yellow: mandible; blue: upper lip; light brown: head shield; gray: transverse furrow Fig. 3: feeler; 4: chin with jaw button (green) and lip button (red);

Coelometopus clypeatus is a beetle from the family of black beetles and the subfamily Coelometopinae . The genus Coelometopus consists of only two species . Both are only found on the Iberian Peninsula .

Notes on the name

The species was first described by Germar in 1813 under the name Blaps clypeata . Germar von Illiger took the name . The name clypeātus ( Latin ) means excellent due to the construction of the head shield ( clypeus ) . Germar also describes in detail a transverse channel on the head shield that characterizes the species.

The unusual formation of the front of the head meant that the type of Solier was placed in its own genus in 1848. The generic name Coelometopus (from ancient Greek κοίλος, kōīlos, hollow and μέτοπον métopon, forehead) alludes to the hollowing out of the forehead. Solier mentions a crescent-shaped deep indentation on the posterior seam of the epistome .

Physique of the beetle

The beetle is almost dull black and is fourteen to sixteen millimeters long. On the upper side it is very dense and finely dotted .

The rounded little head is trimmed at the front and slightly lowered. The short, broad and weakly edged upper lip (Fig. 4 Fig. 2 blue) protrudes forward. No synovial membrane is visible between the upper lip and the head shield (Fig. 4 Fig. 2, light brown). The head shield is separated from the forehead by a wide, deep transverse groove (Fig. 4 Fig. 2 gray). The transverse channel narrows towards the outside in the shape of a sickle and continues as a strong, obliquely outwardly sloping line.

The short, eleven-jointed antennae (Fig. 4, Fig. 3) barely extend beyond the middle of the pronotum. The fourth to seventh links are elongated, the last four links like a string of pearls. The last antenna segment in the male is longer than it is wide and truncated, in the female it is wider than it is long and cut off at an angle. The lateral eyes are strongly outlined. The upper part of the eye is large and rounded and separated from the lower part of the eye by several rows of ocells . The end link of the jaw button is ax-shaped (Fig. 4 Fig. 4, jaw button green), the end section of the lip button is egg-shaped (Fig. 4 Fig. 4, lip button red).

The flat pronotum is almost as long as it is wide, widest in the second third, then a bit flared. The front edge is slightly bulged, the front corners blunt. The somewhat acute rear angles emerge. The sides are edged, the edge widens towards the base and disappears towards the front corners. On the sides of the front edge, one edge is at most indicated, the base slightly edged. The throat is deeply furrowed across.

The wing panels are barely wider than the pronotum and very little near the base, slightly arched behind. Together they are broadly rounded at the top. You have clear shoulder corners. The epipleures of the wing covers are moderately wide in front and extend to the suture of the wing cover (Fig. 3). The elytra are very finely striped, the stripes disappear towards the base and at the end of the elytra. There are no membranous wings.

The triangular label is very small and wider than it is long.

The rear chest is shorter than the articular cavities of the mid-hip. The abdominal sternites are dense and slightly more dotted than the top, especially the first three segments. A short synovium is visible between the 3rd and 4th and between the 4th and 5th abdominal segment (Fig. 3). The legs are short and thin, the splints are thornless. The hind tarsi are four-limbed with a long first limb, the remaining tarsi are five-limbed. The tarsi and the splints on the inside are golden yellow tomentose (Fig. 3). The front tarsi of the males are not expanded.

Sexual organs

The female reproductive organs of Coelometopus clypeatus were examined in comparison with different species of the genus Mesolampus . It was found that a primary mating pouch next to the mouth of the fallopian tube is recognizable, but hardly developed. At the end of a long tube there is a bubble-shaped seed pocket in which the seeds are stored for fertilization after mating.

biology

The beetle is found in rotten trunks (beech, cherry, walnut, pine). A find report mentioned in abundance under pine chips .

distribution

The distribution area is limited to Portugal and northern Spain .

literature

• Natural history of the insects of Germany Begun by WF Erichson Vol. 5, Part 1 Berlin 1877 p. 668f
• Gustav Jäger (Ed.): CG Calwer 's Käferbuch . K. Thienemanns, Stuttgart 1876, 3rd edition p. 627f

Individual evidence

1. ↑ ^{a b} Solier: Essai sur les Collaptérides - 14th Tribu - Blapsides in Flaminio Baudi, Eugenio Truqui: Studi entomologici vol. 1 Turin 1848 p. 149 panel XIII at BHL Species description p. 280, fig. Panel XIII
2. ↑ ^{a b} Coelometopus clypeatus in Fauna Europaea. Retrieved December 15, 2013
3. ^ Taxon profile Coelometopus Solier, 1848 BioLib, accessed December 15, 2013
4. ↑ ^{a b} Coelometopus at Fauna Europaea. Retrieved December 15, 2013
5. ↑ ^{a b c d} Miquel Palmer: Phylogeny of the genus Misolampus (Coleoptera: Tenebrionidae) in Boll. Soc. Hist. Nat. Belears 41 (1998) p. 150 [1]
6. ↑ Sigmund Schenkling: Explanation of the scientific beetle names (species)
7. ↑ Ernst Friedrich Germar: New insects in the magazine of Entomology 1st issue Halle 1813 Species description p. 122 at BHL Species description p. 122
8. ↑ Sigmund Schenkling: Explanation of the scientific beetle names (genus)
9. ^ E. Mulsant: Opuscules entomologique 9th issue Paris 1859 at BHL p. 145 ff
10. ↑ ^{a b c d} Natural history of Germany's insects Begun by WF Erichson Vol. 5, Part 1 Berlin 1877 p. 668f at BHL p. 668f
11. ↑ Coleonet, accessed on 16 December 2013
12. ↑ Piochard de la Brulerie: Rapport sur l'Excursion faite en Espagne 1865 in Annales de la Société entomologique de France Series 4, Vol. 6. Paris 1866 in BHL Article p. 501 Report of discovery p. 543
13. ↑ George Charles Champion: An Entomological Excursion to Bejar, Central Spain in Transactions of the Entomological Society of London London 1903 at BHL p.175
14. ↑ George Charles Champion: An Entomological Excursion to Moncayo, N. Spain in Transactions of the Entomological Society of London London 1904 in BHL Bark of old beeches p.87, under pine chips p.92

Web links

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