Table 2. Measurements (in µm) of Stegelleta laterocornuta sp. nov. and S. tuarua Yeates, 1967 from Castlecliff, New Zealand, the latter compared to the type population (presented as mean ± s.d. and (range) or only range).* Number of annuli from anterior end to nerve ring, excretory pore and deirid, respectively; - indicates that data is not available or not applicable.
Stegelleta laterocornuta sp. nov. Stegelleta tuarua
Population New Zealand JB-75 Type population population Castlecliff
No. & sex Holotype 14 ♀♀ (incl. holotype) 9 ♂♂ {1 aberr.} 1 ♀ 3 ♂♂ 2 ♂♂
Body length 447 433 ± 41 (379–512) 428 ± 35 (365–476) 635 563–739 650; 688
Body diameter (BD) 20.5 19.1 ± 1.7 (15.5–21.5) 17.4 ± 1.1 (15–19) - - 45; 46
Pharynx length 118 116.7 ± 5.2 (109–126) 117.8 ± 4.6 (109–123) {138} - - 144; 165
Tail length 38 35.9 ± 2.9 (30–42) 24.2 ± 0.9 (22–25) {36} - - 43; 48
Anal or cloacal diam. (ABD) 11 11.1 ± 0.8 (9.5–12.5) 11.9 ± 0.4 (11.0–12.5) {13} - - 30; 30
Vulva or Testis 273 270 ± 22 (235–315) 223 ± 15 (200–235) - - 432; 476
V-A/T 3.6 3.6 ± 0.3 (3.0–3.9) - - - -
a 21.8 22.7 ± 1.7 (18.6–26.0) 24.6 ± 1.3 (21.5–26.5) 21.2 17.2–18.8 14.4; 15.0
b 3.8 3.7 ± 0.3 (3.4–4.3) 3.6 ± 0.2 (3.3–4.0) 3.8 3.9–4.8 4.5; 4.2
c 11.8 12.1 ± 0.7 (10.5–13.0) 17.7 ± 1.4 (15.2–19.8) {13.1} 25.4 14.1–16.0 15.1; 14.3
c’ 3.5 3.2 ± 0.2 (2.7–3.6) 2.0 ± 0.1 (1.8–2.2) {2.8} 1.6 1.6–1.9 1.4; 1.6
V or T (%) 61 62.3 ± 1.2 (60–65) 54.2 ± 3.7 (49–60) 69.2 56.8–62.7 66; 69
Lip region diameter 7.0 6.8 ± 0.4 (6.5–8.0) 6.7 ± 0.4 (6–7) - - 11; 12
Stoma length 9.0 8.9 ± 0.3 (8.5–9.5) 8.7 ± 0.5 (8.0–9.5) - - 14.5; 19
Corpus length 70 69.6 ± 4.1 (63–75) 69.6 ± 1.9 (66–72) {81} - - 92; 110
Isthmus length 26 26.7 ± 2.3 (24–30) 27.1 ± 1.7 (24–29) {36} - - 22; 20.5
Bulb length 14.5 14.8 ± 1.0 (13–17) 14.3 ± 0.7 (13.0–15.5) {17} - - 23; 24
Bulb diameter 11 11.5 ± 0.7 (10–13) 11.0 ± 0.7 (10–12) - - 19; 20.5
Corpus/isthmus ratio 2.7 2.6 ± 0.2 (2.3–3.0) 2.6 ± 0.2 (2.4–2.9) {2.3} - - 4.2; 5.4
Nerve ring from ant. end 92 83.0 ± 7.7 (70–96) 86.6 ± 6.4 (77–96) {102} - - 108; 121
Population New Zealand JB-75 Type population Castlecliff
No. & sex Holotype 14 ♀♀ (holotype incl.) incl. 9 ♂♂ {1 aberr.}) 1 ♀ 3 ♂♂ 2 ♂♂
Excretory pore from ant. end 94 86.3 ± 8.1 (72–97) 8.1) 92.0 ± 6.6 (81–99) {106} - - ?; 130
Deirid from ant. end 100 92.9 ± 7.2 (81–104) 7.2) 100.2 ± 5.6 (89–105) {107} - - 141; 171
R NR * 42 35 ± 4 (28–42) 35 ± 2) (32–39) {47} - - 35; 38
R EP * 43 37 ± 4 (32–43) 37 ± 2) (33–39) {49} - - ?; 41
R DEI * 46 40 ± 4 (35–48) ) 42 ± 2 (37–44) {50} - - 46; 55
Annuli width at midbody 2.7 2.0–2.7 2.0–2.7 - - 2.4; 2.4
Annuli width anteriorly 2.0 2.0–2.4 2.0–2.4 - - 3.0–3.4; 3.0–3.4
Vagina or Testis flexure length 6.0 6.0 ± 0.6 (5–7) 39.8 ± 3.9 (35–46) - - 90 (dors); 82
Spermatheca or Spicule length 18 20.6 ± 4.6 (17–31) 4.6 22.5 ± 0.7) (21.5–23.5) - 36–40 43; 42
PUS or Gubernaculum length 17 18.1 ± 5.9 (7–24) 5.9 11.4 ± 0.5 (11–12) - 21–24 25; 24
PUS/VBD 0.9 1.0 ± 0.3 (0.6–1.3) -) - - -
Rectum 17 16.6 ± 1.1 (15.5–19.0) 1.1 -) - - -
Rectum/ABD 1.5 1.5 ± 0.1 (1.4–1.6) -) - - -
Phasmid 12 11.6 ± 0.7 (10–13) 0.7 10.6 ± 1.1) (8.5–12.0) {18} - - 18; 18
Phasmid (% of tail) 32 32.2 ± 1.7 (30–37) 1.7 44.0 ± 3.6) (38–50) - ~40 42; 38