Morphological and molecular characterisation of Californian species ...

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S. Álvarez-Ortega et al. Table 1. Morphometric data of Metaporcelaimus capitatus (Thorne & Swanger, 1936) Andrássy, 2001 and M. marinensis sp. n. All measurements are in μm except L in mm, and in the form: mean ± s.d. (range). Character M. capitatus M. marinensis sp. n. Sonoma County Redwood forest Marin County Laurel trees Females Females Males – Holotype Paratypes Paratypes n 3 – 2 4 L 2.41 ± 0.14 2.40 2.48, 2.36 2.14 ± 0.12 (2.24-2.50) (1.99-2.29) a 34, 36 43 39, 43 39.4 ± 0.7 (39-40) b 4.0, 4.2 4.5 4.7, 4.8 4.5 ± 0.2 (4.2-4.7) c 48, 50 52 45, 49 46.5 ± 3.4 (43-51) c ′ 1.4, 1.5 1.3 1.6, 1.5 1.3 ± 0.1 (1.3-1.4) V 57.5 ± 1.2 58 55, 56 – (56-59) Lipregiondiam. 20.6± 1.4 14 14, 14 14.3 ± 0.4 (19-22) (14-15) Odontostyle length 19.1 ± 0.3 14 ?, 14 14.2 ± 0.7 (19-20) (13-15) Odontophore length 39.6 ± 0.7 25 26, 27 25.4 ± 1.3 (39-40) (24-26) Guiding ring from ant. end 10.0 ± 0.6 8 8, 8 7.8 ± 0.3 (9.5-10.5) (7.5-8.0) Neck length 600, 624 529 529, 493 472 ± 11.9 (456-484) Pharyngeal expansion length 321, 354 276 262, 235 229 ± 11.0 (216-243) Diam. at neck base 65, 67 50 58, 52 48.8 ± 3.9 (45-53) at mid-body 69, 73 55 63, 54 54.2 ± 4.5 (50-59) at anus/cloaca 33.0, 35.5 34 35, 32 34.8 ± 1.6 (32-36) Prerectum length 142 ± 37.8 120 99, 115 143 ± 20.6 (99-169) (117-166) Rectum length 52.9 ± 3.6 39 44, ? 49.0 ± 6.7 (50-57) (39-55) Tail length 50, 51 46 55, 48 46.0 ± 2.7 (43-50) Spicule length – – – 58.7 ± 4.0 (54-63) Ventromedian supplements – – – 6.5 ± 0.6 (6-7) 4 Nematology
Studies on Metaporcelaimus Fig. 2. Metaporcelaimus marinensis sp. n. A: Anterior region in median view; B: Lip region in surface view; C: Neck; D: Vagina; E: Spicule and lateral guiding piece; F: Posterior genital branch; G: Entire body; H: Female, caudal region; I: Male, caudal region. Vol. 00(0), 2012 5
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