Abstract
In sixteen moss, lichen and mixed (moss/lichen) samples, collected from Estonia, Latvia and Lithuania, 291 specimens, 48 simplexes, including one exuvium with 6 eggs, and 8 free-laid eggs of eutardigrades were found. In total, 17 species, together with one new to science, were identified (all are new records for the Baltic states): Astatumen bartosi, Diphascon (Adropion) prorsirostre, D. (Diphascon) bullatum, D. (D.) pingue pingue, D. (D.) recamieri, D. (D.) rugosum, Hypsibius convergens, H. dujardini, H. cf. scabropygus, Isohypsibius ronsisvallei, I. sattleri, Macrobiotus harmsworthi harmsworthi, M. hufelandi hufelandi, Milnesium asiaticum, Milnesium tardigradum tardigradum, Minibiotus formosus sp. n. and Paramacrobiotus richtersi. The new species is most similar to Minibiotus gumersindoi, but differs from it mainly by the presence of two types of cuticular pores, the absence of a triangular or pentagonal arrangement of pores above a single large pore on legs, the presence of granulation on all legs and a different macroplacoid length sequence. In this paper we also provide photographs and morphometrics of H. cf. scabropygus.
Highlights
The Baltic States, i.e. Estonia, Latvia and Lithuania, are located on the eastern coast of the Baltic Sea, and fall within the Palearctic ecozone (Holt et al 2012)
In this study we report seventeen tardigrade species, which are all new records for the Baltic States
In addition to the description of the new species, we provide morphometric data and photographs of Hypsibius cf. scabropygus, a rare species that belongs to a large group of hypsibiids with at least partially sculptured dorsal cuticle and pharynx with two macroplacoids and without the microplacoid
Summary
The Baltic States, i.e. Estonia, Latvia and Lithuania, are located on the eastern coast of the Baltic Sea, and fall within the Palearctic ecozone (Holt et al 2012).
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