Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 85. (Budapest 1993)

Zanetti, A.: Contribution to the knowledge on Eastern Palaearctic Eusphalerum Kraatz with descriptions of new species (Coeloptera, Staphylinidae: Omaliinae)

Sexual dimorphism - Abdomen of females yellowish; apex of elytra elongated at the suture as in Fig. 43. Variability - Size: 1.7-2.6 mm. Lateral margins of pronotum more or less rounded, surface sometimes rather irregular, mainly in small specimens. Remarks - Eusphaierum defyi sp. n. is clearly different from the other species of the Eastern Palaearctic region. Its elytra are shorter than in European species of the subgenus Abinothum, e.g. longipenne (ERICHSON), but longer than in European species of Eusphaierum s. str., e.g. rectangulum (FAUVEL). It is similar to rectangulum, but the punctation of pronotum is denser. According to WATANABE (in litt.), E. defyi sp. n. is "similar to E. shibatai WATANABE in build and colour, but can be distinguished from it by the following points: pronotum more strongly punctured and strongly coriaceus; elytra more strongly punctured, and different configuration of median lobe of male genital organ". Distribution - It is known from various localities of the Paekdu-san area in the Ryanggang Province (northern North Korea) near the Manchurian border and from the environs of Vladivostok. "Paekdusan is an extinct volcano at the Chinese-Korean border, with a deep lake (Chon-ji) in the crater. The highest point of the rim of the crater is the Changgun Peak (2,750 m). This mountain is the most elevated part of Changpai-san (the majority of this range is situated in China). The vegetation of the Paekdu area is predominantly taiga - like in the Eurasian temperate zone" (MERKL & SZÉL 1989). Phenology and ecology - The Korean specimens were collected in June and July, from 1,000 to 2,500 m a.s.l. The sites are characterized as follows: No. 376: netting in the grass vegetation, wooded environs of the Sam-zi-yan hotel (at the edge of the wood); No. 369: netting in grass vegetation, about 2,0002,500 m a.s.l.; No. 1345: Larix olgensis-iore&t mixed with Picea coreana, P. ajanensis and Betula pendula, with rich shrub-level and underwood; No. 1353: dark and dense, largely untouched Larix olgensis-forest mixed with many Betula pendula. Rich underwoodd along a brooklet; No. 1355: Larix olgensis-iorest (not mixed with Betula pendula), with rather poor underwood, not far from the treeborder line (DELY & DELY-DRASKOVTTS 1978, MERKL & SZÉL 1989). Eusphaierum szeli sp. n. (Figs 21-22,44-45) Material examined - Holotype, male and 5 paratypes (3 males and 3 females), labelled: Korea, Ryanggang Prov., 31 km on Paekdu-san road, NW of Samjiyon 2000 m, No. 1355, 28.VI.1988, leg. O. MERKL et GY. SZÉL (holotype and 3 paratypes HNHM, 2 paratypes Z). Korea, Mt. Pektusan, Esplosion-Lake, 20002500 m, 18.VII.1977, No. 369, netting in grasses, leg. DELY et DRASKOVTTS, 1 female (HNHM). Diagnosis - This reddish brown Eusphaierum differs from the species of the same region by pronotum convex with strong microsculpture and fine and sparse punctation, and mainly by the shape of aedeagus with narrow parameres, median lobe subacute at apex and characteristic structure in the internal sac (Figs 21-22). Measurements of holotype - Width of head: 0.59 mm; length of head, from clypeus to neck: 0.27 mm; width of pronotum: 0.72 mm; length of pronotum: 0.46 mm; length of elytra, from shoulder to apex: 1.2 mm; width of elytra: 1.11 mm; length from clypeus to apex of elytra: 2.1 mm; total length, with extented abdomen: 3 mm. Derivatio nominis - This species is dedicated to Dr. GYÓZÓ SZÉL, colepterist at the Hungarian Natural History Museum. Description of holotype - Head brown, paler in fore parts, pronotum reddish brown, scarcely paler along lateral margins, elytra yellowish brown, abdomen dark brown, legs yellowish, antennae yellowish, darker brown from 9th segment. -Head transverse (width/length ratio = 2.1) with very prominent eyes, hemispherical; subantennal depressions protruded caudally in two grooves confluent in the anteocellar pits that are small and roundish; ocelli large and prominent, separated by a superficial depression, mar-