A new species of the genus Calodorylaimus (Nematoda, Dorylaimida) from highly mineralised rivers of the Elton Lake basin, Russia
V.G. Gagarin & V.A. Gusakov
Abstract. A new species of free-living nematode (Calodorylaimus salinus sp. nov.), found in sediment of the highly mineralised rivers of the Elton lake basin (Russia), is described and illustrated. This species is close to C. mongolicus Andrássy, 1988, but differs from the latter in having a wider labial region, a stouter tail in females and a greater number of separate precloacal supplements in males. A dichotomic key for identification of valid species of the genus CalodorylaimusAndrássy, 1986 is given. Calodorylaimus densus Andrássy, 1988 is assigned to the genus Laimydorus Siddiqi, 1969.
Key words: freshwater free-living nematodes, morphology, highly mineralised rivers, Dorylaimida, Dorylaimidae, Calodorylaimus, new species
Zoosystematica Rossica, 2012, 21(1): 3-9 ▪ Published in print 25 July 2012
https://doi.org/10.31610/zsr/2012.21.1.3 ▪ Open full article 
References
Alekseev V.M. & Naumova A.D. 1977. New species of Nematodes from Khasan Lake. Zoologichesky Zhurnal, 56(2): 292–295. (In Russian).
Andrássy I. 1988. The superfamily Dorylaimoidea (Nematoda) – a review. Family Dorylaimidae. Opuscula Zoologi Budapestinensis, 23: 3–63.
Andrássy I. 2009. Free-living nematodes of Hungary (Nematoda errantia). Vol. III. Pedozoologica Hungarica, 5. Budapest. 608 p.
Gagarin V.G. 1993. Free-living nematodes of island Sakhalin. In: Shilova A.I. (Ed.) Presnovodnye bespozvonochnye: biologiya, sistematika, evolyutiya [Freshwater invertebrate: biology, systematic, evolution]: 53–77. St Petersburg: Gidrometeoizdat. (In Russian).
Gusakov V.A. & Gagarin V.G. 2012. Meiobenthos composition and structure in high-mineralized tributaries of the El‘ton lake. Arid Ecosystems, 2(3): in press. https://doi.org/10.1134/S2079096112030067
Loof P.A.A. 1996. Dichotomous and polytomous identification keys for females of the genera Prodorylaimus Andrassy, 1959 and Laimydorus Siddiqi, 1969 (Nematoda: Dorylaimidae). Russian Journal of Nematology, 4: 7–28.
Texas A&M University. 2011. Biology catalog: Nematoda, Family Dorylaimidae. Entomology at Texas A&M University. Updated 24 March 2008 [cited 10 November 2011]. Available from: http://insects.tamu.edu/research/collection/hallan/Nematoda/Family/Dorylaimidae.txt
Tsalolikhin S.J. 1985. Nematody presnykh I solonovatykh vod Mongolii [Nematodes of fresh and brackish water bodies of Mongolia]. Leningrad: Nauka. 115 p. (In Russian).
Vinciquerra M.T. 2005. Dorylaimida Part II: Superfamily Dorylaimoidea. Freshwater nematodes. Ecology and Taxonomy. London: CABI Publishing.
Zinchenko T.D., Golovatjuk L.V., Vykhristjuk L.A. & Shitikov V.K. 2011. Diversity and Structure of Macrozoobenthic Communities in the Highly Mineralized Khara River (Territory adjacent to Lake Elton). Biology Bulletin, 38(10): 1–11. https://doi.org/10.1134/S1062359011100190