Sauertylenchus maximus Siddiqi 2000

Sauertylenchus maximus (Allen, 1955) Siddiqi, 2000 Syn: Bitylenchus maximus (Allen, 1955) Siddiqi, 1986 Tylenchorhynchus maximus Allen, 1950 Tylenchorhynchus wilskii Kornobis, 1980 (Brzeski, 1998) Bitylenchus wilskii (Kornobis, 1980) Jairajpuri, 1982 Bitylenchus wilskii (Kornobis, 1980) Siddiqi, 1986 (Figure 4, Table 3) Description Female Body curved ventrally to C-shaped after heat fixation. Cuticle with distinct annuli, 1.5–2.3 μm wide at midbody. Lateral field with four longitudinal incisures, outer bands areolated. Lip region offset, hemispherical, 8.0– 9.0 μm wide at base, 4.0–5.0 μm high, and bearing six or seven distinct transverse annuli. Cephalic framework lightly sclerotized, outer margins extending over two or three body annuli. Stylet moderately strong, knobs rounded, slightly directed posteriorly; the conus almost half of the total stylet length. Dorsal pharyngeal gland orifice located 2.0–2.1 μm behind stylet knobs. Median pharyngeal bulb oval, 12–13 μm wide; basal bulb pyriform, abutting anterior intestine. Reproductive system didelphic, amphidelphic, spermatheca elongated, empty. Vagina 10 μm long, 40–60% of the vulval body diameter. Intestinal fasciculi present throughout intestine and inside post rectal sac which enters into about two-thirds of the tail length. Tail cylindrical with a hemispherical, annulated terminus, bearing 33–40 annuli on ventral side. Hyaline portion thickness 6–7 μm. Phasmids located 16–17 μm posterior to anus, in the anterior half of the tail. Male Not found. Remarks Compared to the original description of S. maximus by Allen (1955), the Iranian populations differ by the absence of males. The Iranian populations of S. maximus were recovered from Semnan, Ardabil and West Azerbaijan provinces in the rhizosphere of peach (Prunus persica), grass, hawthorn (Crataegus aronia) and apple (Malus pumila), respectively.
Published as part of Azizi, Kourosh, Eskandari, Ali, Karegar, Akbar, Ghaderi, Reza, Elsen, Sven Van Den, Holterman, Martijn & Helder, Johannes, 2022, Analyses of morphological and molecular characteristics of Telotylenchinae from Iran point at the validity of the genera Bitylenchus and Sauertylenchus, pp. 425-446 in Zootaxa 5169 (5) on pages 434-435, DOI: 10.11646/zootaxa.5169.5.2, http://zenodo.org/record/6952625
{"references":["Allen, M. W. (1955) A review of the nematode genus Tylenchorhynchus. University of California Publications in Zoology, 61, 129 - 165.","Siddiqi, M. R. (2000) Tylenchida Parasites of Plants and Insects. 2 nd edition. CABI Publishing, Wallingford, Oxon, UK, 833 p. https: // doi. org / 10.1079 / 9780851992020.0000","Siddiqi, M. R. (1986) Tylenchida Parasites of Plants and Insects. Commonwealth Institute of Parasitology, Slough, UK, 645 pp.","Brzeski, M. W & Dolinski C. M. (1998) Compendium of the genus Tylenchorhynchus Cob, 1913 sensu lato (Nematodea: Belonolaimidae). Russian Journal of Nematology, 6 (2), 189 - 199.","Jairajpuri, M. S. (1982) Some studies on Tylenchorhynchinae: The subgenus Bitylenchus Filipjev, 1934, with description of Tylenchorhynchus (Bitylenchus) depressus n. sp. and a key to species of Bitylenchus. Mededelingen van de Fakulteit Landbouwwetenschappen Rijksuniversiteit Gent, 47, 765 - 770."]}