Pseudogarypus pangaea Henderickx n. sp., a new fossil pseudoscorpion from Baltic amber, is described. Epoxy embedding and X-ray micro-CT are used to visualize the morphology of the single available specimen.

ŠØÁHLAVSKÝ F., HENDERICKX H., KRÁL J. 2005. Karyotype study on pseudoscorpions of the genus Lasiochernes Beier (Pseudoscorpiones, Chernetidae). Folia biol. (Kraków) 53: 69-74.Karyotypes of the genus Lasiochernes (Pseudoscorpiones, Chernetidae) are studied for the first time. The diploid chromosome numbers of males were found to be 2n=61 in L. pilosus, 2n=69 in L. siculus and 2n=73 in L. cretonatus. Karyotypes of all species mainly consist of biarmed chromosomes; the sex chromosome system is X0. Remarkably, the X chromosome displays partial (L. cretonatus), or even total (L. pilosus), negative heteropycnosis during the spermatogonial metaphase.

Palaeogrosphus jacquesi sp. n., the third known sub-fossil scorpion from Malagasy copal, is described. This is the fourth record of a sub-fossil scorpion in copal. The copal specimen was collected in the mines of the region of Sambava, Province of Antsiranana in the northeast of Madagascar. It belongs to the genus Palaeogrosphus Lourenço, 2000, described from Madagascar, and now represented by two sub-fossil species.

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Roncus elbulli sp. n. is described from Cap de Creus Nature Park (Catalonia, Spain). Th e new species is morphologically close to Roncus cadinensis Zaragoza, 2007 (Barcelona province), but diff ers by being smaller in size and having a more robust chela with a diff erent microsetae pattern. Th e new species seems to be restricted to coastal semiarid slopes with garrigue vegetation. A key to the Spanish species of the genus Roncus is provided.