Abstract
Two new nematode species of the order Dorylaimida from Lake Baikal sediments are described and illustrated. Mesodorylaimus ushkaniensis sp. n. is morphologically similar to M. cryptosperma Loof, 1969, but differs by the longer body, comparatively shorter tail in females, longer odontostyle and longer spicules. Allodorylaimus baikalensis sp. n. resembles A. tarkoenensis (Andrássy, 1959) Andrássy, 1986, but differs by the comparatively longer body, tail, spicules, and prerectum in females.
References
- Ahmad, W. (1993) Studies on the genus Mesodorylaimus Andrássy, 1959 from India. Nematologica, 39, 417–430.
- https://doi.org/10.1163/187529293X00376
- Andrássy, I. (1959) Nematoden aus der Tropfsteinhöhle “Baradla” bei Aggtelek (Ungarn), nebst einer Übersicht der bisher aus Höhlen bekannten freilebenden Nematoden-Arten. Acta Zoologica, 4, 253–277.
- Andrássy, I. (1986) The genus Eudorylaimus Andrássy, 1959 and the present status of its species (Nematoda: Qudsianematidae). Opuscula Zoologica Universitatis Budapestinensis, 22, 3–42.
- Andrássy, I. (2009) Free-living nematodes of Hungary (Nematoda Errantia). III. Hungarian National History Museum and Sys-tematic Zoology Research Group of the Hungarian Academy of Science, Budapest, 609 pp.
- Gagarin, V.G. (1991) Seven new species of freshwater nematodes. Zoologicheskii Zhurnal, 70, 20–27. [in Russian]
- Gagarin, V.G. & Serikova, M.P. (2007) Description of Allodorylaimus elytrigii sp.n. (Nematoda, Dorylaimida) from the White Sea supralittoral. Zoologicheskii Zhurnal, 86, 252–254 [in Russian]
- Loof, P.A.A. (1969) Taxonomy of some species of the genus Mesodorylaimus Andrássy, 1959 (Dorylaimoidea). Nematologica, 15, 253–274.
- https://doi.org/10.1163/187529269X00687
- de Man, J.G. (1876) Onderzoekingen overvrij in de aarde levende Nematoden. Tijdschrift der nederlandische dierkundige Ve-reenigin, 2, 78–196.
- Naumova, T.V. & Gagarin, V.G. (2019) Review of the free-living Nematode (Nematoda) fauna of Lake Baikal. Zootaxa, 4608 (1), 101–118.
- https://doi.org/10.11646/zootaxa.4608.1.5
- Pearse, A.S. (1942) Introduction to Parasitology. Bailliere, Tindall & Cox, London, 357 pp.
- Vinciguerra, M.T. (2006) Dorylaimida Part II: Superfamily Dorylaimoidea. In: Eyualem Abebe, Traunspurger, W. & Andrassy, I. (Eds.), Freshwater Nematodes: Ecology and Taxonomy. CABI Publishing, Cambridge, Massachusetts, pp. 1–444.