Table 1 in Descriptions of species of Stegelleta Thorne, 1938 (Nematoda, Rhabditida, Cephalobidae) from California, New Zealand and Senegal, and a revision of the genus

Table 1. Measurements (in µm) of Stegelleta incisa (Thorne, 1937) from Kelso Dunes, California compared with the type population of S. incisa from Utah and a bisexual population described by Orselli & Vinciguerra (2002) from Italy under the name S. ophioglossa Andrássy, 1967 (presented as mean ± s.d. and (range) or only range). * Calculated from data in original publication; ** number of annuli from anterior end to nerve ring, excretory pore and deirid, respectively; ¤ estimated from drawings in original publication; - indicates that data is not available or not applicable; figures within [] indicate the number of specimens measured.
PopulationUtahKelso Dunes, CaliforniaItalyNo. & sex1 ♀1 ♂10 ♀♀11 ♂♂5 ♀♀5 ♂♂Body length500460490 ± 23 (465–534)463 ± 28 (428–526)550 ± 30 (510–580)550 ± 30 (510–600)Body diameter (BD)24*20*23.2 ± 1.0 (22–25)21.2 ± 1.7 (18–24)29 ± 1.4 (27.5–30.8)25.3 ± 2.6 (20.9–27.5)Pharynx length139*115*130.6 ± 1.0 (115–141)123.9 ± 7.9 (107–135)181.4 ± 6.1 (177–192)184.8 ± 24.2 (161–225)Tail length34*34*38.8 ± 1.7 (32–41)32.2 ± 2.5 (29–36)50.1 ± 3.6 (44–53.9)48.6 ± 3.6 (45.1–53.9)Anal or cloacal diam. (ABD)--14.4 ± 0.2 (14.0–14.5)16.1 ± 1.0 (14.5–18.0)18.4 ± 0.4 (17.6–18.7)22 ± 1.1 (20.9–23.1)Vulva or Testis--307 ± 14 (291–335)269 ± 23 (223–300)--V-A/T--3.8 ± 0.2 (3.4–4.1)---a212321.2 ± 0.9 (19.6–22.5)21.9 ± 1.3 (19.5–24.2)19 ± 2 (17–21)22 ± 2.2 (15–25)b3.643.8 ± 0.2 (3.5–4.2)3.7 ± 0.2 (3.4–4.3)3 ± 0.1 (2.8–3.2)2.9 ± 0.2 (2.6–3.3)c15.013.512.7 ± 0.6 (11.8–13.4)14.4 ± 1.0 (12.7–15.5)11 ± 0.5 (10.4–11.5)11.3 ± 0.6 (10.9–12.2)c’--2.7 ± 0.1 (2.5–2.8)2.0 ± 0.2 (1.8–2.3)2.6 ± 0.2 (2.3–2.9)2.1 ± 0.1 (1.9–2.3)V or T (%)664162.7 ± 1.1 (61–65)58.1 ± 3.4 (52–64)62.5 ± 0.6 (61.4–63)-Lip region diameter--8.3 ± 0.3 (7.5–8.5)8.0 ± 0.6 (7.0–8.5)--Stoma length--9.8 ± 0.9 (8.5–11.0)9.7 ± 0.6 (9–11)13.2 ± 2 (11–15.4)13.5 ± 0.4 (13.2–14.3)Corpus length--83.2 ± 2.8 (78–86) [5]81.2 ± 3.9 (76–87) [5]123 ± 5.4 (117–129)123.6 ± 21.5 (102–159)Isthmus length--34.2 ± 2.7 (29–36) [5]31.8 ± 2.4 (30–36) [5]30.3 ± 7.5 32.7 ± 4.6 (17.6–36.3) (25.3–37.4)Bulb length--16.6 ± 0.7 (16–18)15.7 ± 0.9 (14.5–17.0) [6]20.2 ± 2.1 (17.6–23.1)18.8 ± 0.6 (18.1–19.8)Bulb diameter--12.2 ± 0.7 (11–13)11.8 ± 0.7 (11–13) [6]--Corpus/isthmus ratio3-2.4 ± 0.2 (2.3–2.9) [5]2.6 ± 0.2 (2.1–2.8) [5]--Nerve ring from ant. end--88.5 ± 4.5 (78–94)90.2 ± 7.1 (78–102)137.5 ± 6.3 (129–144)141.8 ± 23.1 (118–179)No. & sex1 ♀1 ♂10 ♀♀11 ♂♂5 ♀♀5 ♂♂Excretory pore from ant. end--93.8 ± 2.9 (88–99)95.6 ± 7.0 (84–108)122–147-Deirid from ant. end--101.1 ± 3.4 (94–107)101.5 ± 8.3 (82–114)--R NR **--32 ± 1.5 (30–35)32 ± 2 (30–36)--R EP **--34 ± 2 (32–38)34 ± 2 (31–38)--R DEI **--37 ± 2 (35–41)37 ± 2 (34–41)--Annuli width at midbody--2.4–3.42.4–3.02.0–2.5-Annuli width anteriorly--2.4–2.72.2–3.0--Vagina or Testis flexure length--7.3 ± 0.4 (7–8)39.5 ± 6.7 (27–48)7–8-Spermatheca or Spicule length--30.9 ± 6.7 (24–43)24.0 ± 1.3 (22–27)24–26.534.5 ± 1.6 (31.9–36.3)PUS or Gubernaculum length--27.3 ± 2.3 (24–31)13.2 ± 1.1 (12–16)30.6 ± 5.9 (22.5–36.3)20.4 ± 1.4 (19.8–23.1)PUS/VBD--1.3 ± 0.1 (1.1–1.4)-0.7–1.3-Rectum--16.0 ± 1.6 (13–18)-21.6 ± 0.3 (16.5–24.7)-Rectum/ABD--1.1 ± 0.1 (0.9–1.2)---Phasmid--14.9 ± 2.2 (12–20)14.1 ± 1.8 (11–18)--Phasmid (% of tail)30 ¤47 ¤38.3 ± 4.6 (32–49)43.8 ± 4.7 (37–50)15–3025–35