Enchodelus groenlandicus Thorne 1939

Enchodelus groenlandicus (Ditlevsen, 1927) Thorne, 1939 Dorylaimus (Doryllium) groenlandicus Ditlevsen, 1927; Ditlevsen (1927) BLR: https://doi.org/10.5281/zenodo.10830630 Dorylaimellus groenlandicus (Ditlevsen, 1927) Thorne & Swanger, 1936; Thorne and Swanger (1936) BLR: https://doi.org/10.5281/zenodo.10845805 Enchodelus (Enchodelus) groenlandicus (Ditlevsen, 1927) Thorne, 1939 Enchodelus (Enchodelus) groenlandicus; Ahmad and Jairajpuri (1980) BLR: https://doi.org/10.5281/zenodo.8144934 Enchodelus groenlandicus (Ditlevsen, 1927) Thorne, 1939; Thorne (1939) BLR: https://doi.org/10.5281/zenodo.11003133 Enchodelus groenlandicus; Eliava and Eliashvily (1990): 57; 98 BLR: https://doi.org/10.5281/zenodo.11003031 Enchodelus groenlandicus; Guerrero et al. (2008 b) BLR: https://doi.org/10.5281/zenodo.8111847 Enchodelus groenlandicus; Andrássy (2009 a) BLR: https://doi.org/10.5281/zenodo.10728535 Enchodelus groenlandicus; Pedram et al. (2011) BLR: https://doi.org/10.5281/zenodo.8114666 Enchodelus groenlandicus; Elshishka et al. (2012) Plazi treatment Enchodelus groenlandicus; Holovachov (2014): 22 [list] Plazi treatment Enchodelus groenlandicus; Peña-Santiago (2021 b): 207 BLR: https://doi.org/10.5281/zenodo. 11192354 Distribution This species is representative of Holarctic nematode fauna, reported for the first time from Greenland (type habitat: a brook - Ditlevsen (1927)) and later from: Albania (soil from around beech trees, soil around brook, 950-1500 m a. s. l. - Andrássy (2009 a)), Iran (the rhizosphere of grasses - Pedram et al. (2011)), Russia (Arctic tundra - Kuzmin and Gagarin (1990) / Arctic polygonal nival desert, associated with Deschampsia borealis (Trautv.) Roshev., Gymnomitrium coraloides Nees., Cladonia sp., 750 m a. s. l - Elshishka et al. (2012)), Spain (meadow and hedgehog heath, 955-2450 m a. s. l. - Guerrero et al. (2008 b)) and Uzbekistan (a cotton field - Khakimov (1973)). Taxon discussion Originally described by Ditlevsen (1927), based on a single female specimen from Disko Island, Greenland, with Guerrero et al. (2008 b) providing a more detailed description of Iberian populations. Later, the species was also reported, along with descriptions, from Albania, Iran and Russian Arctic (polygonal polar desert on Plateau Putorana) (Andrássy 2009 a, Pedram et al. 2011, Elshishka et al. 2012, respectively), but Iranian specimens deviate in many morphometric characters from the type population and subsequent records. Besides, the species was recorded in a cotton field in Uzbekistan (Khakimov (1973)), but Guerrero et al. (2008 b) suggested that this material belonged to a different species (characterised by a short body and post-equatorial vulva). Further, Andrássy (2009 b) suggested that E. groenlandicus and E. saxifragae are identical. Notes Geographical distribution of E. groenlandicus shows a remarkable disjunction pattern as it occurs at high altitudes 950 m - 2450 m a. s. l. in southern Europe and Iran and at high latitudes in the Arctic Polar Region (Putorana Plateau and Greenland). Guerrero et al. (2008 b) hypothesised that such distribution might stem from quaternary glacial events.