Species of Hexabothriidae (Monogenea) may have extensive distribution ranges reflecting multiple host species: evidence from three new South African records Author Vaughan, David B. 0000-0002-4914-5003 Coastal Marine Ecosystems Research Centre, Central Queensland University, Rockhampton, Queensland, Australia. d.b.vaughan@cqu.edu.au Author Christison, Kevin W. 0000-0001-9879-3405 Department of Forestry, Fisheries and Environment, Aquaculture Innovation and Technology Development, Cape Town, South Africa. http: // orcid. org / 0000 - 0001 - 9879 - 3405 & Department of Biodiversity and Conservation Biology, University of the Western Cape, Cape Town, South Africa. Author Hansen, Haakon 0000-0003-1400-9615 Norwegian Veterinary Institute, Fish Health Research Group, Pb 64, N- 1431 Ås, Norway. http: // orcid. org / 0000 - 0003 - 1400 - 9615 Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite & Disease Laboratory, School of Fisheries, Aquaculture, & Aquatic Sciences, College of Agriculture, Auburn University, 559 Devall Drive, Auburn, AL 36832, USA. Author Bullard, Stephen A. 0000-0002-4914-5003 Department of Zoology, School for Environmental Sciences and Development, North-West University, Private Bag X 6001, Potchefstroom, 2520, South Africa. https: // orcid. org / 0000 - 0001 - 6681 - 7724 d.b.vaughan@cqu.edu.au text Zootaxa 2023 2023-03-10 5254 2 151 180 http://dx.doi.org/10.11646/zootaxa.5254.2.1 journal article 233754 10.11646/zootaxa.5254.2.1 5ec5feba-d119-472c-8d9e-a20b6dd9453a 1175-5326 7727255 3B5279F6-8157-4DB1-BFE5-8391D7330D53

TABLE 4. Comparative measures for Hypanocotyle bullardi

	Hypanus dipterurus (Chero et al. 2018; re-measured = §)	Bathytoshia brevicaudata (Present study)
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a = combination of proximal and distal bulb average length measurements for appendix sucker of Chero et al. (2018); b = Chero et al. (2018) measured separate parts of the ovary: proximal portion 700 (530–1200) long, 990 (740–1810) wide (inclusive of radial branches); distal portion in two parts, descending part 2660 (1580–5660) long, ascending part 1500 (864–3010) long.
Body
Body-proper length (excluding haptor)	19160 (15250–23000); 19763 (17292–21484, n = 4)§	9804 (6229–12193, n = 10)
Maximum width	2540 (2100–3270); 2541 (2118–2950, n = 4)§	3271 (2704–4291, n = 10)
Haptor length	3510 (2750–4120); 4925 (4351–5484, n = 4)§	3304 (2493–4169, n = 10)
Haptor width	4730 (3800–5670); 4929 (4453–5223, n = 4)§	3402 (2410–4005, n = 10)
Haptoral appendix length	4460 (3550–5550); 5215 (4644–5782, n = 4)§	2791 (1724–3567, n = 10)
Haptoral appendix width	1000 (770–1350); 1153 (962–1262, n = 4)§	1129 (914–1550, n = 10)
Sucker of appendix length	689a; 644 (540–685, n = 4)§	569 (423–669, n = 10)
Sucker of appendix width	587a; 481 (398–549, n = 4)§	362 (267–438, n = 10)
Oral sucker length	279 (250–330); 287 (247–335, n = 4)§	221 (192–290, n = 7)
Oral sucker width	304 (250–390); 315 (292–359, n = 4)§	307 (278–352, n = 7)
Pharynx length	116 (100–138); 121 (114–127, n = 2)§	97 (82–107, n = 5)
Pharynx width	112 (95–125); 101 (93–109, n = 2)§	99 (94–111, n = 5)
Number of testes	83§	68 (56–96, n = 9)
Testis diameter	201; 205 (202–208, n = 3)§	118 (87–145, n = 9)
Male copulatory organ total length	1370 (1090–1840)	999 (863–1213, n = 7)
Male copulatory organ maximum width	262 (226–294)	151 (102–207, n = 7)
Cirrus length	373 (313–472)	275 (184–349, n = 7)
Ovary length	b; 2463 (2111–2661, n = 4)§	1681 (1021–2135, n = 10)
Seminal receptacle length	377 (320–450); 393 (345–450, n = 4)§	209 (133–309, n = 10)
Seminal receptacle width	259 (200–360); 235 (166–285, n = 4)§	285 (186–464, n = 10)
Ôtype length	1053§	1181 (1075–1318, n = 9)
Ôtype width	69§	63 (52–84, n = 9)
Uterus length	7755§	4227 (3104–5390, n = 9)
Egg length	166 (130–200); 181 (169–193, n = 4)§	182 (157–194, n = 10)
Egg width	67 (60–80); 73 (66–79, n = 4)§	68 (63–76, n = 10)
Hamulus
Total length	54 (48–58)	60 (57–62, n = 5)
Total diameter	22 (18–28)	28 (27–29, n = 5)
Hook point length	18§	20 (17–22, n = 5)
Hook shank length	14§	13 (11–16, n = 5)
Hook distal point width	3§	3, n = 5
Hook outer aperture angle	75°§	77° (69°–89°, n = 5)
Hook root-base angle	110°§	105° (96°–113°, n = 5)
Hook aperture	23§	19 (17–20, n = 5)
Hook shank-base width	6§	5 (3–5, n = 5)
Hook outer root-shaft length	53§	48 (40–52, n = 5)
Hook inner root-shaft length	50§	46 (41–49, n = 5)
Hook root-base width	27§	24 (21–29, n = 5)
Sucker sclerite 1
Circumference length	1808 (1632–1942, n = 3)§	1567 (1376–1638, n = 10)
Total length	762 (687–868); 848 (832–858, n = 3)§	746 (668–858, n = 10)
Total diameter	604 (524–663, n = 3)§	539 (474–570, n = 10)
Inner diameter	537 (457–596, n = 3)§	479 (421–514, n = 10)
Shaft width	74 (65–83); 69 (67–72, n = 3)§	61 (49–77, n = 10)
Shaft length	852 (838–862, n = 3)§	753 (669–853, n = 10)
Hook-side curve length	154 (123–177, n = 3)§	127 (90–142, n = 10)
Shaft-side curve length	222 (183–268, n = 3)§	153 (129–185, n = 10)
Aperture	596 (530–653, n = 3)§	575 (495–690, n = 10)
Hook length	107 (100–113, n = 3)§	87 (74–95, n = 10)
Hook-curve length	10 (8–12, n = 3)§	11 (8–18, n = 10)
Hook aperture	84 (72–96, n = 3)§	68 (56–81, n = 10)
Hook base-width	31 (27–35, n = 3)§	25 (21–31, n = 10)
Sucker sclerite 2
Circumference length	1847 (1699–1939, n = 3)§	1567 (1442–1654, n = 10)
Total length	762 (687–868); 856 (826–898, n = 3)§	737 (686–834, n = 10)
Total diameter	625 (572–678, n = 3)§	543 (479–607, n = 10)
Inner diameter	555 (500–610, n = 3)§	479 (417–528, n = 10)
Shaft width	74 (65–83); 70 (69–72, n = 3)§	63 (55–79, n = 10)
Shaft length	861 (827–904, n = 3)§	743 (692–835, n = 10)
Hook-side curve length	162 (129–218, n = 3)§	130 (111–152, n = 10)
Shaft-side curve length	178 (167–198, n = 3)§	142 (112–194, n = 10)
Aperture	636 (613–661, n = 3)§	570 (435–666, n = 10)
Hook length	97 (90–103, n = 3)§	81 (70–94, n = 10)
Hook-curve length	12 (10–13, n = 3)§	11 (7–16, n = 10)
Hook aperture	75 (66–81, n = 3)§	64 (53–76, n = 10)
Hook base-width	32 (25–37, n = 3)§	25 (20–28, n = 10)
Sucker sclerite 3
Circumference length	1792 (1637–1972, n = 4)§	1573 (1411–1705, n = 10)
Total length	762 (687–868); 888 (812–964, n = 4)§	734 (640–806, n = 10)
Total diameter	571 (528–670, n = 4)§	541 (487–600, n = 10)
Inner diameter	520 (464–604, n = 4)§	481 (431–544, n = 10)
Shaft width	74 (65–83); 66 (56–71, n = 4)§	63 (55–82, n = 10)
Shaft length	898 (824–966, n = 4)§	740 (648–818, n = 10)
Hook-side curve length	147 (123–157, n = 4)§	135 (108–164, n = 10)
Shaft-side curve length	210 (200–217, n = 4)§	147 (114–204, n = 10)
Aperture	673 (571–762, n = 4)§	558 (489–640, n = 10)
Hook length	93 (85–103, n = 4)§	84 (72–92, n = 10)
Hook-curve length	11 (9–12, n = 4)§	11 (8–16, n = 10)
Hook aperture	76 (66–84, n = 4)§	66 (53–82, n = 10)
Hook base-width	30 (26–33, n = 4)§	24 (19–27, n = 10)