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Two new polydesmid species are described, illustrated, and diagnosed: a troglobitic, Brachydesmus mulaomerovici n. sp., from Bosnia and Herzegovina and epigean Brachydesmus verrucosus n. sp. from Macedonia. The new taxa belong to inferus- and stygivagus-groups of species, respectively. Relationships with congeners are briefly discussed. The distribution map and key are given for all currently known taxa belonging to these groups of species.

The pseudoscorpion sample discovered under a stone in Dalmatia (Croatia) was studied. A new species is described herein: Chthonius (Chthonius) makirina n. sp. This taxon is considered endemic to Dalmatia and the Balkan Peninsula. Along these lines, the diagnostic characters of the analyzed species are thoroughly described and figured. Taxonomic interrelationship and geographic distribution are briefly discussed.

A new genus (Punctoduvalius gen. n.) and a species of trechine ground beetles (Punctoduvalius orlovacensis sp. n.) from Bosnia and Herzegovina have been described and diagnosed. Punctoduvalius gen. n. is clearly distinct from all other phenetically close genera in many important respects, such as: the presence of depigmented reduced eyes, the presence of a pigmented eye border, the presence of deep and complete frontal furrows, the presence of tiny setae on the genae, the presence of distinct longitudinal fissures on the protibias, the ratio of length/width of the first protarsal article in males, the presence of two elytral discal setae, the presence of numerous setiferous punctures in interstrial spaces, the specific position of the humeral setae, and the specific shape of the copulatory piece. This new genus comprises four species: Punctoduvalius pilifer (Ganglbauer, 1891) (endogean from Mts. Treskavica and Bjelašnica, and from a cave on Mt. Visočica, Bosnia and Herzegovina), P. protectus (Winkler, 1926) (from the Pećina kod Ostojića Cave, Mt. Treskavica, and endogean from Mt. Jahorina, Bosnia and Herzegovina), P. brevipilosus (Knirsch, 1927) (endogean from Lupoglav Peak, Mt. Prenj, Bosnia and Herzegovina), and P. orlovacensis sp. n. (from the Orlovača Cave, village of Donje Biševo, near Pale, Bosnia and Herzegovina). The four species clearly differ in many important respects. The following three taxonomic changes are proposed: Punctoduvalius pilifer (Ganglbauer, 1891), comb. n., P. protectus (Winkler, 1926), comb. n., and P. brevipilosus (Knirsch, 1927), comb. n. The new genus and its members belong to an old separate phyletic lineage, distinct from all other existing species groups. Additionally, these forms are relict and endemic to the deep soil and caves of Bosnia and Herzegovina.

Two new epigean pseudoscorpion species belonging to the family Chthoniidae - Chthonius (Ephippiochthonius) metohicus n. sp. and Chthonius (Ephippiochthonius) civitatisveti n. sp. from the UN Administered Province of Kosovo and Southern Croatia, respectively, are described. The newly erected taxa are endemic to each of the areas studied. Their taxonomic relationship with their phenetically close congeners Chthonius (Ephippiochthonius) bidentatus Beier, 1939, Chthonius (Ephippiochthonius) kemza Ćurčić, Lee et Makarov, 1993 and Chthonius (Ephippiochthonius) tetrachelatus (Preyssler, 1790) and comparative morphological traits are described.

A new pseudoscorpion from the family Chthoniidae - Chthonius (Chthonius) aquasanctae n. sp. from west Serbia is described. The newly erected taxon is endemic to the area studied. Its taxonomic relationship to its phenetically close congeners Chthonius (Chthonius) lesnik Ćurčić and Chthonius (Chthonius) iugoslavicus Ćurčić, as well as the comparative morphological traits, are described in detail.

A new endemic and relict species of the genus Neobisium Chamberlin, N. mirkaci n. sp., from the Majhahlje Pit, Ćićarija (Istria), Croatia, has been described. From its phenetically close congeners, N. spelaeum Schiodte and N. stygium Beier, it is distinguished in many important respects. This new taxon is illustrated, diagnosed, and thoroughly described.

A new epigean pseudoscorpion, Chthonius (Chthonius) onaei n. sp. is erected from Podašpilje, nr. Omiš, Mt. Omiška Dinara, Dalmatia, Croatia. Its interrelations with two close congeners, Chthonius (C.) litoralis Hadži, 1933 and Chthonius (C.) dalmatinus Hadži, 1930 are briefly discussed., U radu je dijagnostifikovana nova epigejska vrsta pseudoskorpija Chthonius onaei n. sp. sa planine Omiška Dinara u blizini Omiša, Dalmacija (Hrvatska). Razmatrani su i interspecijski odnosi novoopisane vrste sa dvema srodnim epigejskim vrstama, Chthonius litoralis Hadži, 1933 i Chthonius dalmatinus Hadži, 1930 iz Hrvatske.