Abstract
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.
Highlights
The second is the shape of the palpal segments, with the most marked one being the palpal femur (in A. ferum, the palpal femur is widened basally (Fig. 3C), whereas it is not widened in C. museorum (Fig. 3D))
The last characteristic is visible on the carapace (A. ferum has a carapace without humeral angles (Fig. 3C), while C. museorum has humeral angles on the carapace (Fig. 3D) (Beier 1963; Christophoryová et al 2011b)
The present record from Hungary adds to the distribution data about the species in Central Europe
Summary
The family Cheiridiidae contains two subfamilies, Cheir idiinae with six genera (including one fossil genus) and Pycnocheiridiinae with two genera (Harvey 2013). Many genera of the subfamily Cheiridiinae are widely distrib uted, e.g. Apocheiridium Chamberlin, 1924, Cheiridium Menge, 1855, Cryptocheiridium Chamberlin, 1931, and Neocheiridium Beier, 1932 are known from multiple continents. In Central Europe, two species, Apocheiridium ferum (Simon, 1879) and Cheiridium museorum (Leach, 1817), have a wide geographical distribution. Regardless of the present record, the Hungarian pseudoscorpion fauna includes 53 species belonging to 20 genera and eight families (Har vey 2011, 2013; Novák 2012, 2013a, 2015, 2017, 2018; Novák and Kutasi 2014; Novák and Harvey 2015; Har vey et al 2019). The current finding of A. ferum repre sents the first record of the genus and the species for the Hungarian fauna. The aims of this work are to i) pres ent the first known occurrence of A. ferum in Hungary, ii) compare the main morphological characteristics of both recorded cheiridiid species, and iii) show the distri bution patterns of both species in Hungary
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