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. 2022 Mar 16;10:e13010. doi: 10.7717/peerj.13010

Table 2. Characters of Onyx species (males).

Species Characters
Body length a Cephalic setae length Dorsal tooth length Terminal pharyngea l bulb, length & shape, internal lining Number of supplements Spicule length c’
adenophorus 1154 41 10 23 50, elongate, double, lining cuticularized 18, sigmoid 29 2.1
balochiensis 1240–1640 39–52 17–19 32–36 84–100, inconspicuously double, lining faint 15–23, tubular 45–50 2.3–3.2
blomei 697–756 25–28 6–6.5 26–29 50, elongate, lining faint 7–8 tubular, slightly S-shaped 34–35 3.5–3.7
brevispiculatum 1800 22 ? ? no true bulb but slight swelling, lining faint 39 crochet-shaped 117 1.2 calc
cangioensis 679–759 20–23 5 31–36 29 calc, oval, lining faint 14–16, tubular 45–49 2.4–3
cannoni 1032 44 8 22 46 calc, elongate; lining faint 15, tubular 28 ∼2 calc
cephalispiculus 1204–1284 20–28 12–15 ∼40 calc 70 calc, elongate, double, lining cuticularized 18–24, S-shaped 65–75 2.4 calc
cobbi 1334–1544 31–40 21–22 39–43 80 calc, elongate, double, lining cuticularized 15–16, tubular 42-46 3–3.7
dimorphus 1080 21 15–20 50 66–85, elongate, lining faint 10, S-shaped 45 2.6
disparamphis 750–1014 28–41 9.3–15 26–40 38–50, elongate, lining faint 14–19, straight tubular 33–40 2.5–4.4
litorale 1100–1360 28 & 20 15 35 64, elongate, lining faint 15–20, sigmoid 190–200 3.4 calc
macramphis 813 37 8 29 42, elongate, lining faint 14, tubular 27 2.9
mangrovi 523–591 12–15 3 & 3 30–36 70 calc, lining faint 17–23, tubular sigmoid 36–40 1,1–1,4
minor 675–806 35–41 7 21–22 33–40, elongate, double, lining lens-like cuticularized 12, tubular S-shaped 22–25 3.3–3.5
monstrosum 1865–2059 43–49 13 ? 81, double, lining lens-like cuticularized 19–21, sigmoid 55–60 3
orientalis 974–1003 39–44 15–17 24–27 76 calc, double, lining lens-like cuticularized 17–18, tubular 38–40 2.5–2.8
paradimorphus 1003–1196 25-31 18 44 70 calc, double, lining lens-like cuticularized 15, sigmoid tubular 41–44 4.2–4.3
perfectus 1740–2160 37–39 22–28 53–56 88 calc, elongate, lining faint 13–22, sigmoid 45–70 2
potteri 1112 40 14 ? 55 calc, elongate, internal lining faint 10, slightly sigmoid 50 3 calc
rizhaoensis 1213–1330 44–45 10 20–22 55 calc, elongate, double, lining lens-like sclerotized 12, sigmoid 30 2.6–2.8
rugatus 1300 32–33 19 40 calc 90, double, lining lens-like cuticularized 22, complicated papillae 42 2.7
sagittarius 1070 28 5 30 60, double, lining faint 24, slightly sigmoid 35 2
septempapillatus 1320 40 20 21 75, double, lining cuticularized 7, small and nearly straight 37 3