Igor J. Kaprus

Revision of Palearctic species of the genus Dimorphaphorura (Collembola: Onychiuridae: Onychiurinae: Oligaphorurini) with description of new species.

Abstract In this paper, the Palearctic genus DimorphaphoruraBagnall, 1949 (Collembola: Onychiuridae), is revised. The diagnosis of the genus is defined within the tribe Oligaphorurini based on the development of the furcal area, shape of furcal rudiment, and furcal chaetotaxy. Six new species are described: D. olenaesp. n. from Ukraine, D. inyasp. n . , D. pseudoinyasp. n., D. sibiricasp. n., D. caucasicasp. n. , and D. sophyaesp. n. from Russia. The type species of the genus, D. differensBagnall, 1949 is redescribed, and the lectotype and paralectotypes are designated. All previously known species are redescribed or with additional characters complemented: D. alnus ( Fjellberg, 1987 ) comb. n. , D. chatyrdagi ( Kaprus’, Weiner & Pomorski, 2002 ) comb. n. , D. daii ( Pomorski, Skarżyński & Kaprus’, 1998 ) comb. n. , Dimorphaphorura eremia ( Kaprus’,Weiner & Pomorski, 2002 ) comb. n. , D. hackeri ( Christian, 1986 ) comb. n. , D. irinae ( Thibaud & Taraschuk, 1997 ) comb. n. , D. melittae ( Christian, 1993 ) comb. n. , D. pseudoraxensis ( Nosek & Christian, 1983 ) comb. n. , D. raxensis ( Gisin, 1961 ) comb. n. , D. steposa ( Kaprus’, Weiner & Pomorski, 2002 ). An identification key to all Dimorphaphorura species is provided.

“Sexually Armed” Species of the Genus Protaphorura (Collembola: Onychiuridae)

Abstract Species possessing mvo: Protaphorura bakhchisaraica sp. nov. and P. salsa sp. nov. from two peculiar habitats: xerothermic bushes in Ukraine (Crimea) and a salt lake shore in Russia (South Siberia) are described. Two other species with this organ, Protaphorura ianstachia Yosii, 1972 and P. stiriaca (Stach, 1946), are redescribed, discussed and their lectotypes designed. An identification key to all known Protaphorura species having mvo is given. The structure and arrangement of the organ is applied as a sharp diagnostic character at the species level.

New Siberian “spineless” species of Thalassaphorura Bagnall, 1949 (Collembola, Onychiuridae), with a key to world species of the genus

Six new species of Thalassaphorura from South Siberia are described and illustrated: T. aspinata sp. nov., T. sayana sp. nov., T. sibirica sp. nov., T. stebaevae sp. nov., T. stepensis sp. nov. and T. weineri sp. nov. Their affinity with related species is discussed and a comparison of all species without anal spines is presented. The key to the world species of Thalassaphorura and their geographic distribution are also provided.

Collembola of the genus Protaphorura Absolon, 1901 (Onychiuridae) in the Eastern Palearctic: morphology, distribution, identification key

Abstract Seven new species, Protaphorura jernika sp. n., Protaphorura abscondita sp. n., Protaphorura tuvinica sp. n., Protaphorura vasilinae sp. n., Protaphorura sayanica sp. n., Protaphorura oligopseudocellata sp. n. and Protaphorura nikolai sp. n. from different habitats of the southern Siberia and Far East of Russia, are described. Protaphorura ombrophila (Stach, 1960) is redescribed based on the type specimens. These species differ one from other and from all known species by dorsal and ventral pseudocellar formulae, number of pseudocelli on subcoxae 1 of legs I–III, parapseudocellar formula, chaetotaxy of body, structure of claw, size of postantennal organ and body length. Geographical distribution of all known Protaphorura species of Eastern Palearctic was analysed and an identification key to 50 species was provided.

A new species of Pseudachorutes TULLBERG, 1871 (Collembola, Neanuridae) from Israel

New species of the genus Pseudachorutes is described and illustrated.