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

MATERIAL AND METHODS Specimens were collected in Romania, County Maramures, Rodna Mountains (Muntii Rodnei) and Maramures Mountains (Muntii Maramuresului). Male genitalia were studied after short boiling in 10% KOH solution. Abdominal sternite VII were figured by slide mounts, depressed under coverglass. For comparing the new species to its closest relatives, the following specimens, all deposited in the Hungarian Natural History Museum, Budapest, were used: Diplocolenus penthopitta (WALKER, 1851): "sudeticus", "Silesia austr.", "1900.VI.il.", [leg.] "Kertész", "Deltocephalus penthopittus Am. Fieb." [HORVÁTH's handwriting] (1 male). Diplocolenus quadrivirgatus (HORVÁTH, 1884): Lectotype, "Mármaros, Pop Iván, 20.7.1883" (male). Other materials examined: "Górhavas, Gyulafalva, 1902, Aigner" (1 female); "TRANSYLVANIA, Mt. Rodnei, Statiunea Borsa, top of the Vf. Gargalau, 2100 m, 01.08.2002. leg. A. Orosz", 1 male, 2 females; "TRANSYLVANIA, Mt. Rodnei, Statiunea Borsa, between of the Vf. Stiol and Vf. Gargalau, 1500-1800 m, 31.07.02. leg. A. Orosz", 3 females; "ROMANIA, Mt. Rodnei, Borsa, between Stiol and Prislop, about 1500 m, 29.06.2005. leg. K. Orci, J. Kontschán, D. Murányi", 1 female; "ROMANIA, County Brasov, Mt. Ciucas, 1600-1850 m, 28.07.2006. leg. A. Orosz", 1 male, 1 female; "ROMANIA, County Prahova, Muntele Rosu, over Cheia, 1500-1600 m, 27.07.2006. leg. A. Orosz", 4 males, 5 females. THE SUBDIVISION OF DIPLOCOLENUS Diplocolenus RlBAUT, 1946 (type species by original designation: Deltocephalus calceolatus BOHEMAN, 1845) is one of the most speciose genera within the tribe Jassargini, subfamily Deltocephalinae. The genus is widely distributed in the Palaearctic Region, two species also occur in the Neotropical Region. The genus was described by RlBAUT (1946), who later subdivided the genus into three subgenera, Diplocolenus s. str., Erdianus and Verdanus (RlBAUT 1952). In a subsequent paper (RlBAUT 1959), he established a further subgenus, Sabelanus. On the basis of the structure of the subgenital plate, EMELJANOV (1966) recognized six subgenera, and erected Calidanus, Gelidanus and Verdanulus in addition to those described by RlBAUT. DLABOLA ( 1980) added a further new subgenus, Ribautanus for the accommodation of D. convenarum RlBAUT, 1946. In a revision of the genus, KNIGHT (1974) attempted to present a reasonable subdivision of the genus based on phylogenetic analysis. As a basis, characters of the male genitalia, first of all anal tube and pygophore, subgenital plates, connective, genital styles, furthermore the basal apodeme, shaft and apex of the aedeagus were thoroughly examined. As a result, with detailed arguments, he subdivided the genus into three subgenera, corresponding with