20. Echiniscus trisetosus Cuénot, 1932

Figure 4B

Synonyms

Echiniscus osellai Maucci, 1974 syn. nov.

Echiniscus storkani Bartoš, 1940: Gąsiorek et al. (2019b)

Terra typica: France.

Etymology: From Latin tres = three + saetōsus = bristly, referring to the presence of three trunk cirri (C, Cd, D) on each side of the body. An adjective in nominative singular.

Shortened description. Medium-sized to large (ca. 250–380 μm, typically 300–350 μm). Body appendage configuration A-C-Cd- D-Dd (Fig. 4B), all but Dd cirrous, and Dd –spiniform. See E. blumi above for the remaining characters.

Phylogenetic position: Echiniscus trisetosus is firmly located at the base of the Echiniscus phylogenetic tree (Figs 1–2).

Remarks: Echiniscus osellai Maucci, 1974 syn. nov. has an identical chaetotaxy and sculpturing (Figs 5G–I) as E. trisetosus, and there are no discriminative criteria between these two species. Besides, as above for E. blumi .