Abstract
A new dorylaimid species is described herein from natural habitats in the biosphere reserve of Valle de Tehuacán-Cuicatlán (RBVTC), Mexico. Talanema ngiguae sp. nov. is characterized by its 1.24–1.63 mm long body, lip region hardly offset by depression and 14.5–16.5 µm wide with perioral liplets, odontostyle 18.5–22 µm long, guiding ring double, neck 323–383 µm long, pharyngeal expansion occupying 45–46% of the total neck length, uterus tripartite and 153–190 µm long or 2.7–2.8 times body diameters, vulva longitudinal (V = 57–61), female tail conical with a dorsal concavity (27–32 µm, c = 46–49, c’ = 0.9–1.0), male tail short and rounded conoid (23 µm, c = 67–71, c’ = 0.7), spicules 68–69 µm long, and 14–17 shortly spaced ventromedian supplements ending at level of the anterior end of spicules, with hiatus. The new species is compared with its closest relative, T. mauritiense, both taxa being easily distinguished by their lip region, vulva orientation, female tail and spicule length.
References
- Ahmad, W. & Jairajpuri, M.S. (1982) Some new and known species of Dorylaimoidea. Nematologica, 28, 39–61. https://doi.org/10.1163/187529282X00501
- Andrássy, I. (1992) The superfamily Dorylaimoidea (Nematoda)—a review. Family Qudsianematidae, II. Opuscula Zoologica Budapestinensis, 24 (1991), 3–55.
- Botha, A. & Heyns, J. (1990) Dorylaimoidea (Nematoda) from the Kruger National Park. Koedoe, 33, 47–59. https://doi.org/10.4102/koedoe.v33i2.440
- Chitwood, B.G. (1938) IV. Some nematodes from the Caves of Yucatan. In: Pearse, A.S. (Ed.), Fauna of the Caves of Yucatan. Carnegie Institution of Washington, Publication, pp. 51–66.
- De Bruin, S. & Heyns, J. (1992) Dorylaimida (Nematoda) from Bostwana. South African Journal of Zoology, 27, 156–172. https://doi.org/10.1080/02541858.1992.11448278
- Erum, Y.I. & Shahina, F. (2010) Taxonomic studies on parasitic and soil nematodes found associated with wheat in Pakistan. Pakistan Journal of Nematology, 28, 1–58.
- Imran, Z., Abolafia, J. & Ahmad, W. (2021) On the identity of Labronema baqrii Khan, Jairajpuri and Ahmad, 1989 (Nematoda, Dorylaimida) and analysis of the relationships between the genera Labronema Thorne, 1939 and Talanema Andrássy, 1991. Zoologischer Anzeiger, 291, 103e112. https://doi.org/10.1016/j.jcz.2021.02.003
- Khan, T.H., Jairajpuri, M.S. & Ahmad, W. (1989) Two new species of Labronema (Nematoda: Dorylaimida) from India. Indian Journal of Nematology, 19, 194–198.
- Loof, P.A.A. (1964) Free-living and plant parasitic nematodes from Venezuela. Nematologica, 10, 201–300. https://doi.org/10.1163/187529264X00042
- Mejía-Madrid, H.H. & Peña-Santiago, R. (2020) Morphological and molecular characterisation of Aporcelinus zapotitlanensis sp. n. (Dorylaimida: Aporcelaimidae) from central Mexico. Nematology, 22, 469–478. https://doi.org/10.1163/15685411-00003317
- Mejía-Madrid, H.H. (2018) Soil nematode abundance and diversity from four vegetation types in Central Mexico. Nematology, 20, 15–32. https://doi.org/10.1163/15685411-00003119
- Mushtaq, P. & Ahmad, W. (2007) Some new and known species of the family Qudsianematidae (Nematoda: Dorylaimida) from Jammu and Kashmir, India. Journal of Nematode Morphology and Systematics, 9 (2006), 153–178.
- Peña-Santiago, R. & Abolafia, J. (2016) On the identity of Aporcelinus granuliferus (Cobb, 1893) Andrássy, 2009 and its taxonomic consequences. Nematology, 18, 999–1014. https://doi.org/10.1163/15685411-00003011
- Peña-Santiago, R., Cortés, N., García-Ruiz, M. & Abolafia, J. (2023) Morphological and molecular characterisation of Talanema ibericum sp. n. (Dorylaimida, Qudsianematidae) from southern Iberian Peninsula. Nematology, 25, 195–205. https://doi.org/10.1163/15685411-bja10214
- Seinhorst, J.W. (1959) A rapid method for the transfer of nematodes from fixative to anhydrous glycerine. Nematologica, 4, 67–69. https://doi.org/10.1163/187529259X00381
- Sukul, N.C., Das, P.K. & Mitra, B. (1975) Labronema digitatum n. sp. (Nematoda: Dorylaimoidea), a new soil nematode from cultivated soils of Santiniketan. Indian Agriculture, 19, 299–302.
- Thorne, G. (1939) A monograph of the nematodes of the superfamily Dorylaimoidea. Capita Zoologica, 8, 1–261.
- Thorne, G. (1974) Nematodes of the Northern Great Plains. Part II. Dorylaimoidea in part (Nemata: Adenophorea). South Dakota State University Agricultural Experiment Station Technical Bulletin, 41, 1–120.
- Vazifeh, N., Niknam, G., Jabbari, H. & Peña-Santiago, R. (2023) Morphological and Molecular Characterization of Talanema eshtiaghii sp. n. (Dorylaimida, Qudsianematidae) from Iran. Journal of Nematology, 55 (1), 1–8. https://doi.org/10.2478/jofnem-2023-0022
- Williams, J.R. (1959) Studies on the nematode soil fauna of sugarcane fields in Mauritius. 3. Dorylaimidae (Dorylaimoidea, Enoplida). Mauritius Sugar Industry Research Institute Occasional Paper, No. 3, 1–28.