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The genus Apocheiridium Chamberlin, 1924 is reported from Hungary for the first time. Adults of Apocheiridium ferum (Simon, 1879) were collected under the bark of a Platanus Linné, 1753 tree in Pápa, Veszprém County. Simultaneously, the second known European cheiridiid species, Cheiridium museorum (Leach, 1817), was found under the same bark. The differences between these two species are discussed. With the new record of A. ferum, 54 species and 21 genera are now known for the Hungarian fauna of Pseudoscorpiones.

A redescription is provided of the adult, tritonymph and deutonymph life stages of the troglobitic Neobisium (Blothrus) slovacum Gulička, 1977, which is known from Slovakia and Hungary. Material examined included 35 previously deposited museum specimens and 15 newly collected specimens. In addition, the karyotype and distribution of 18S rDNA clusters are described, using fluorescence in situ hybridization (FISH). The male karyotype of N.slovacum comprises 69 chromosomes, with a predominance of biarmed chromosomes, and an X0 sex chromosome system. Two pairs of signals for 18S rDNA on biarmed chromosomes (submetacentric and metacentric) of different sizes were identified. The present study provides the first information about the distribution of these clusters in the arachnid order Pseudoscorpiones. The geographic distribution of the species is summarized and mapped. Neobisiumslovacum is endemic to the Slovak and Aggtelek Karst area in southern Slovakia and north-western Hungary, where it has been recorded from 16 caves. One of these, Hačavská cave (in Slovakia), is the northernmost locality known for any species of the subgenus Blothrus.

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