Materials of Hypogastruridae, Odontellidae, Neanuridae, Onychiuridae and Isotomidae from East Africa were studied. Several new species are described: Acherontiella kowalskiorum sp. n., Furculanurida grandcolasorum sp. n., Stachorutes dallaii sp, n., and Paleonura cassagnaui sp, n. Friesea vrorovi Tshelnokov, 1977 and Tullbergia kilimanjarica (Delamare Deboutteville, 1953) are redescribed. Stachorutes arlei (Thibaud & Massoud, 1980) is a new combination. Identification keys for Friesea Dalla Torre, 1895 with 2 + 2 eyes and Stachorutes Dallai, 1973 are given.
A new diagnosis of Paronychiurus Bagnall, 1948 is given. P. ramosus (Folsom, 1917) and P. eous (Christiansen & Bellinger, 1980) comb. nov. are redescribed on the basis of the types and new specimens. Two new species are described: P. probus sp. n., P. hubbardi sp. n. A key to the species in this genus is presented.
A new diagnosis of Vibronychiurus Pomorski, 1998 is given. V. archivari (Christiansen, 1956) comb. n. and V. hermonicus (Gruia, Poliakov & Broza, 2000) stat. & comb. n. are redescribed on the basis of the types and new specimens. Two new species are described: V. aestimabilis sp. n. from Khakasiya (Russia) and V. caucasicus sp. n. from Caucasus (Russia). A key to the species Vibronychiurus is provided.
On the ventral tube of males of Onychiuroides granulosus (Stach, 1934) there is a male ventral organ, which consists of two groups of four setae that are thickened, slightly flattened and bent. All setae of the male ventral organ are inserted in a richly sculptured cuticle. At the base of each seta there are a few large cells (basal cells) that have large irregular nuclei that contain a large amount of heterochromatin. In the cytoplasm of the basal cells there are numerous mitochondria, ribosomes and a rich system of endoplasmic reticulum. The plasma membrane of the basal cells forms richly folded, deep invaginations, filled with a dense material, which also occurs in particular setae and on their surface. The present study indicates that the male ventral organ is secretory and does not confirm its previously suggested sensory function., Bożena Simiczyjew, Dariusz Skarżyński, Adrian Smolis, Romuald J. Pomorski, Marta Mazurkiewicz-Kania., and Obsahuje bibliografii