Species;"A. thoubalicum";"O. paraperplexa" "Natural Reserve";"Cuc Phuong";"Cuc Phuong";PhongNha;"Huu Lien" Province;"Ninh Binh";"Ninh Binh";"Quang Binh";"Lang Son" n;4♀♀;3♂♂;♂;12♀♀;2♀♀;6♀♀ Character; ; ; ; ; ;  L;"1.63 ± 0.12 (1.50–1.75)";"0.83 ± 0.09 (0.77–0.94)";1.54;"1.55 ± 0.07(1.46–1.68)";"1.51, 1.77";"1.44 ± 0.12(1.43–1.45)" a;"35.3 ± 1.7 (33–37)";"41.1 ± 5.2(38–47)";59.4;"55.6 ± 3.9 (50–62)";"44, 52";"46 ± 1.7(45–48)" b;"2.5 ± 0.3 (2.2–2.8)";"4.2 ± 0.5(3.9–4.8)";5.1;"5.1 ± 0.1 (4.9–5.4)";"4.7, 5.1";"5.2 ± 0.2(4.9–5.3)" c ;"59.9 ± 10.5(50–70)";"50.4 ± 3.0(47–53)";15;"17.3 ± 4.1(14–21)";"14, 17";"15.3 ± 2.0(14–18)" V/T;"53 ± 4.0(47–57)";"42 ± 9.8(31–49)";?;"39 ± 2.0(36–41)";"37, 44";"39 ± 3(36–41)" c’;"0.8 ± 0.1(0.7–1.0)";"1.1 ± 0.2(0.9–1.3)";5;"4.5 ± 1.1(2.0–5.5)";"5.1, 5.4";"5.1 ± 0.9(4.1–5.9)" "Lip region diameter";8;5;8;8;8;7 "Odontostyle length";9;"4.0 ± 1.0(3-5)";8;8;8;8 "Odontophore length";"10.5 ± 0.6(10–11)";?;9;9;8;9 "Neck length";"645 ± 30(630–690)";"198 ± 2.5(19–200)";302;"306 ± 11 (295–335)";"324, 348";"280 ± 95(274–291)" "Pharyngealexpansion length";"425 ± 44(400–490)";"86.7 ± 5.8(80–90)";150;"157 ± 10(145–175)";"170, 175";"155 ± 5(150–160)" "Body diam. at neck base";"47.0 ± 2.4(45–50)";"21.3 ± 0.6(21–22)";28;"28.5 ± 2.0 (25–32)";28;"27.7 ± 2.5(25–30)" "Body diam. at mid-body";"46.0 ± 1.4 (45–48)";"20.3 ± 0.6(20–21)";26;"28.0 ± 2.4(24–32)";32;"31.0 ± 1(30–32)" "Body diam. at cloaca";"33.0 ± 2.4(30–35)";"15.7 ± 0.6(15–16)";20;"19.8 ± 0.6(18–20)";20;"18.7 ± 1.1(18–20)" "Prerectum length";"160 ± 8.7 (150–165)";?;?;"120 ± 20(80–130)";"80, 100";"65 ± 13.2(55–80)" "Rectum length";"27.8 ± 1.5(27–30)";?;?;"21.7 ± 2.8(18–25)";"20, 22";"40 ± 0(40–40)" "Tail length";"27.5 ± 2.9 (25–30)";"16.7 ± 2.9(15–20)";100;"96.8 ± 6.3 (90–110)";"101, 108";"95 ± 12(82–106)" "Spicules length";-;20;42;-;-;- "Ventro median supplements";-;2;1; ;-;-