O. Merkl szerk.: Folia Entomologica Hungarica 68. (Budapest, 2007)

Remarks - Since the male genitalia were not figured in the original description (HORVÁTH 1884), there was considerable confusion about the identity of D. quadrivirgatus for a long time. First, HAUPT ( 1935) erroneously synonymized D. quadrivirgatus with D. sudeticus. Later, NAST (1938) misidentified specimens of D. quadrivirgatus from the Eastern Beskids ("Ostkarpaten") as D. nigricans, and figured the male genitalia. WAGNER (1939) recognized NAST's (1938) misidentification, but recognized the specimens as an undescribed species and named them as D. nasti. Together with D. penthopitta, LANG (1947) and DLABOLA (1954) recognized D. quadrivirgatus as junior synonym of D. sudeticus. The same opinion was expressed by RlBAUT (1952), and repeated in his world catalogue by METCALF (1967). Finally, based on the re-examination of the adequate type material, NAST (1972) recognized D. quadrivirgatus as a valid species. KNIGHT ( 1974) accepted this opinion and designated a lectotype of the species. Distribution - Bulgaria, Romania, Ukraine. Diplocolenus (Erdianus) beresi sp. n. (Figs 8-15) Type material - Holotype, male: "TRANSYLVANIA, Mt. Rodnei, Statiunea Borsa, top of the Vf. Gargalau, 2100 m, 01.08.2002., leg. A. Orosz". - Paratypes (males, females): "TRANSYLVANIA, Mt. Rodnei, Statiunea Borsa, under the Vf, Gargalau, 1900-2100 m, 31. 07. 2002., leg. A. Orosz" (1 male, 2 females); "TRANSYLVANIA, Mt. Rodnei, Statiunea Borsa, top of the Vf. Gargalau, 2100 m, 1.08.2002., leg. A. Orosz" (4 males, 9 females); "ROMANIA, Mt. Rodnei (Mt. Maramures), Borsa, between Stiol and Prislop, about 1500 m, 29.06.2005., leg. K. Orci, J. Kontschán & D. Murányi" (28 males, 3 females). Holotype and paratypes are deposited in the Hungarian Natural History Museum, Budapest. Description - Colour. General colour light yellowish green, with more or less developed but distinct brown spots on vertex, pronotum, scutellum (Fig. 8) and forewings; dorsal colouration varying from almost uniformly light yellowish green to almost uniformly chocolate brown. Frontoclypeus dark brown with distinct median light spot of variable shape; postclypeus with a pair of distinct triangular light spots; genae andlorum uniformly light yellow (Fig. 10). Cells of forewings transparent; clavus, anteapical and apical cells with distinct brown pattern; veins of forewings yellowish (Fig. 9). Tibiae of fore and mid legs light yellow, posterior legs dark brown. Ventral surface of body largely dark brown; abdominal sternites black, posteriorly bordered with red. Lateral parts of male anogenital complex dark, anal tube dorsally light yellow, pygophore with light yellow dorsal lobe and almost black posterior process. Structure of male genitalia. Anal tube dorsoventrally slightly flattened, lateral margins converging posteriad in dorsal aspect, apex not reaching apex of pygophore. Pygophore narrowing