Ábrahám Levente (szerk.): Válogatott tanulmányok XIX. - Natura Somogyiensis 35. / Miscellanea 19. (Kaposvár, 2020)
Háva, J. - Zahradnik, P.: A new species of the genus Stagetus Wollaston, 1861 (Coleoptera: Prinidae: Dorcatominae) from Eocene Baltic amber
46 Natura Somogyiensis The type material is deposited in the following collection: JHAC - Private Entomological Laboratory and Collection, Jifí Háva, Únetice u Prahy, Prague west, Czech Republic. Holotype specimen of the new species described here is provided with a red, printed label showing the following text: "Holotype Stagetus arturi sp. nov. J. Háva & P. Zahradnik det. 2020". Results Subfamily Dorcatominae Stagetus arturi sp. nov. (Figs. 1-2) Type material. Holotype (unsexed): Amber inclusion No. 5946, Poland, Gdansk city area, (JHAC). The complete beetle is included in a transparent amber piece, with dimensions of .30x23 mm. Syninclusions consist of numerous minute organic particles and one very small specimen of Acari (Arachnida). Description of holotype: Body oval (Fig. 1), transversally and longitudinally convex, body length 1.3 mm, the greatest width 0.5 mm (in amber situation). Pronotum, head, elytra, abdomen and legs brown, antennae not visible. Head hypognathous, almost flattened, finely punctured, punctures almost touched. Eyes large, rounded, slightly convex, glabrous. Antennae and palpi not visible. Pronotum about as long as wide, trapeziform (Fig. 1), finely punctured, shiny, with very short yellow setation. The greatest width very shortly before base. Posterior angles obtusely rounded (in dorsal view); anterior part of pronotum slightly raised. Scutellum triangular, very small. Elytra shortly oval, shining, with distinct shoulders, with very short yellow setation. Each elytron with eleven striae consisting of punctures; punctures are large, defined discally and near apex of elytron, eleventh elytral stria ends at the second half of elytron. Prosternum and metastemum with small individual punctures laterally. Legs robust and short, brown, tarsi short light brown. All abdominal visible ventrites of the same length, with small punctures medially. Differential diagnosis: The new fossil species differs from other known recent Palaearctic species keyed by Toskina (2015) by the small body form, brownish cuticle and elytral striation. The new species belongs to the “byrrhoides species group” and is very similar to S. makarovi Zahradnik, 1997, but differs from it by the following characters. S. makarovi Zahradnik, 1997: body length 1.7 mm, body light brown; setation white; setation on elytra double - very short, dense and recumbent, and long, sparse and erect; eleventh elytral stria ends at the first third of the length of elytron. S. michalskii sp. nov.: body length 1.3 mm; body light brown; setation on elytra yellow, very short, not double; eleventh elytral stria ends at the second half of elytron. Etymology: Patronymic, dedicated to amber specialist Artur Michalski (Wroclaw, Poland).
