Hydrodroma meridionalis Pešić & Smit 2011

Male. (holotype; in parentheses measurements of paratypes, if not given otherwise n = 5): Idiosoma L/W (800–994/680–813); integument papillae bluntly pointed. Coxal field: L Cx-I+II, 208 (206–226, x¯ = 215), Cx-III+IV, 244 (241–263, x¯ = 252), total number of coxal setae: 15–18 (18–22, x¯ = 20) on Cx-I, 18–19 (16–21, x¯ = 18) on Cx-II, 14 (11–16, x¯ = 14) on Cx-III, 17 (15–19, x¯ = 17) on Cx-IV. Genital plate (Fig. 1B, 3A): setae more numerous than in females, for measurements, Ac and setae numbers see Table 1; ejaculatory complex L 163 (163–177, n = 3, x¯ = 169). Capitulum vL 183 (188–203, x¯ = 195); chelicera (Fig. 1D) total L 247 (265–275, x¯ = 270), basal segment L 194 (209–216, x¯ = 213), claw L 51 (52–55, x¯ = 54). Palp as in female, for chaetotaxy see Fig. 2B, for measurements see Table 1. Number of swimming setae on legs are presented in Table 2. Female. (paratypes, n = 3): Idiosoma L/W 840–1044/750–938. Coxal field: L Cx-I+II, 219, Cx-III+IV, 247; number of coxal setae: 18–23 (x¯ = 21) on Cx-I, 14–23 (x¯ = 19) on Cx-II, 12–16 (x¯ = 14) on Cx-III, 14–19 (x¯ = 17) on Cx-IV. Shape of genital plate as in Fig. 1C, for measurements, Ac and setae numbers see Table 1. Capitulum vL 203–225 (x¯ = 217); chelicera total L 269–286 (x¯ = 278), basal segment L 214–235 (x¯ = 224), claw L 54–60 (x¯ = 56). Palp: For chaetotaxy see Fig. 1F, for measurements see Table 1. Numbers of swimming setae on legs are presented in Table 2. Morphometric data for the genital plate, palp and leg segments (2–6) for Hydrodroma meridionalis sp. n. Numbers (n) and length in µm (L) are given. MALE FEMALE holotype paratype (n =5, in parentheses x¯) paratype (n =3) genital acetabula, n 47–46 42–51 (49) 37–52 (45) genital setae, n 32–46 35–43 (38) 27–33 (31) genital plate, L 191–195 184–200 (192) 175–195 (185 ) dL P-1 39 43–47 (45) 46–63 (53) dL P-2 65 63–65 (65) 64–70 (66 ) dL P-3 44 35–48(42) 43–52 (48) dL P-4 158 163–168 (165) 168–182 (176) dL P-5 67 62–67 (66) 69–72 (70) Palp, total L 373 376–390 (383) 390–428 (413) H P-4 32 32–34 (33) 35–39 (36) L/H P-4 ratio 4.9 4.8–5.1 (5.0) 4.6–5.2 (4.9) dL I-Leg-2 68 72–75 (74) 73–86 (80) dL I-Leg-3 94 97–100 (99) 95–109 (103) dL I-Leg-4 141 143–147 (145) 144–172 (157) dL I-Leg-5 184 184–194 (189) 194–222 (207) dL I-Leg-6 172 166–184 (179) 178–194 (189) dL II-Leg-2 88 91–97 (93) 97–103 (100) dL II-Leg-3 116 116–122 (118) 119–137 (128) dL II-Leg-4 191 197–203 (201) 203–234 (220) dL II-Leg-5 234 238–250 (245) 244–281 (261) dL II-Leg-6 203 200–220 (214) 191–226 (214) dL III-Leg-2 91 94–103 (98) 100–116 (109) dL III-Leg-3 109 111–119 (116) 115–131 (125) dL III-Leg-4 176 185–191 (189) 192–222 (208) dL III-Leg-5 219 222–234 (229) 234–267 (249) dL III-Leg-6 198 191–217 (208) 210–229 (220) dL IV-Leg-2 122 128–141 (132) 134–159 (146) dL IV-Leg-3 159 159–178 (169) 175–200 (187) dL IV-Leg-4 244 244–259 (252) 259–294 (276) dL IV-Leg-5 261 259–281 (272) 281–322 (299) dL IV-Leg-6 239 231–252 (245) 255–275 (266) Table 2. Number of swimming setae of Hydrodroma meridionalis sp. n., from Lawn Hill Creek (type series). Hydrodroma meridionalis sp. n. male holotype (paratype, n =7) female (n = 5) II-Leg-5p 1 (1) 1 III-Leg-4p 8 (8–9) 7–9 III-Leg-5p 6 (5–7) 5–7 IV-Leg-4a 8–9 (8–10) 9–10 IV-Leg-4p 8–9 (8–9 ) 8–10 IV-Leg-5a 2–3 (2–3) 1–3 IV-Leg-5p 4–5 (4–6) 3–6 Number of swimming setae of Hydrodroma meridionalis sp. n. (Victoria: Stony Creek 1♀, Rockpool Buandik Falls 2♀, Jump Creek 1♂; Queensland: Gregory River 2♂, 2♀, Fletcher Creek 3♀, Cattle Creek 1♀, Waterview Creek 1♂, Davies Creek 1♂, 1♀, Alligator Creek 1♀, Broken River 2♀; New South Wales: Kangaroo Valley 1♂, 1♀, Bugong Creek 2♂, 1♀, Towamba River 1♀, Wog Wog River 1♂; Western Australia: Plunge pool, The Grotto, S of Wyndham, 1♂, Pool Lennard River 2♀,1♂, S of Kununnura 2♀, pool W of Tunnel Creek 2♂,1♀, unnamed creek at crossing with Windjana Gorge road 1♀; Northern Territory: Douglas River 1♂, 1♀, Chinaman Creek 2♂, 3♀). Victoria Queensland New Southern Wales Western Australia Northern Territory male (n =1) female (n =3) male (n =4) female (n =10) male (n =4) female (n =3) male (n =4) female (n =7) male (n = 3) female (n = 4) II-Leg-5p 1 1 1 1 1 1 1 1 1 1 III-Leg-4p 8 9–12 8–9 8–9 8–12 10–12 7–11 6–9 8–9 7–12 III-Leg-5p 6 6–9 6–5 4–6 7–10 8–11 3–6 3–7 5–6 5–8 IV-Leg-4a 8 8–12 7–10 6–11 7–10 9–11 7–9 6–9 7–8 7–9 IV-Leg-4p 8 9–11 6–9 7–11 7–11 10–12 7–10 7–10 7–9 7–10 IV-Leg-5a 2 3–4 2–3 1–3 2–3 3–4 0–2 1–2 2–3 0–2 IV-Leg-5p 5–6 7–8 3–5 3–5 4–8 5–6 4 3–4 4–5 2–6

Widespread in Australia (Queensland, Victoria, New Southern Wales, Western Australia, Northern Territory, South Australia).