Rhitymna cursor ( Thorell, 1894 ) Jäger, 2019

Jäger, Peter, 2019, Review of the huntsman spider genus Rhitymna Simon, 1897 (Araneae: Sparassidae), Zootaxa 4560 (3), pp. 441-462 : 452

Rhitymna cursor ( Thorell, 1894) comb. nov.

Figs 27 , 33–35 , 61

Sarotes cursor Thorell, 1894: 339 (description of female; holotype female [PJ 3294], Singapore [N 1°21'16.51", E

103°46'40.21", 140 m elevation], Workman collection 144.1901, 59.1054, XXIX, NMID, examined). Workman 1896: 82,

pl. 82 (illustration of female). Olios cursor (Thorell) . Roewer 1955: 698. Heteropoda cursor (Thorell) . Bonnet 1957: 2188. Rhitymna simoni Jäger, 2003: 117 , figs 68–74 (description of female; holotype female [PJ 1554], Indonesia, Java, Palabuan,

Fruhstorfer, Simon Coll. 14780, jar 1625, MNHN, examined) syn. nov.

Note. The type of Rhitymna cursor comb. nov. was only recently made available. It is clear from the congruent female copulatory organs as well as from spination and measurements that it is a senior synonym of R. simoni Jäger, 2003 . The holotype female of R. cursor differs from the type of R. simoni in the following characters: 1. Distinct central transversal rim almost straight and with an additional ridge anteriorly, 2. Epigynal field not as elongated as in holotype of R. simoni , 3. Posterior ducts broader than in holotype of R. simoni ( Figs 33–35 ).

Measurements (holotype R. cursor ): PL 4.9, PW 5.4, AW 3.5, OL 6.4, OW 2.9. Chelicerae with 3 anterior and 3 posterior teeth. Palpal claw with 6 teeth. Spination (leg III missing): Palp 131, 0 0 1, 1111, 1012, Femur I–II 323, IV 321, Patella I–II 101, IV 100, Tibia I–II 2226, IV 2126, Metatarsus I–II 2024, IV 3014/3034 + ventral distal median spine. AME 0.37. No slit sense organs could be found close to the epigyne.

Distribution. Singapore, Indonesia (Java). The female holotype of T. cursor extends the known distribution range from Java to Singapore [ Malaysia was given in previous versions of the World Spider Catalog, probably according to the title of Workman’s book; the label states clearly Singapore as collecting locality as it was listed in Thorell’s original description] ( Fig. 61 ).

Figures

FIGURE 61. Records of Rhitymna species currently known (World Spider Catalog 2019 and works cited therein, records in this paper). Species with larger distribution ranges: stars—R. verruca, light triangles—R. plana, light squares—R. pinangensis. Inset: Sri Lanka.

FIGURES 16–27. Rhitymna spp., habitus (16–23, 25–27 in ethanol; 24 alive). 16–19 Rhitymna gerdmangel spec. nov. from Mae Hong Son Prov., Thailand; 20–24 Rhitymna plana, from Tuyen Quang Province, Vietnam; 25–26 Rhitymna tangi, from Oudomxai Prov. Laos; 27 Rhitymna cursor, holotype from Singapore (16–17, 20–21 males, 18–19, 22–27 females).

FIGURES 33–35. Rhitymna cursor comb. nov., holotype female from Singapore. 33 Epigyne, ventral; 34 Vulva, dorsal; 35 Schematic course of internal duct system, dorsal. FW—first winding of internal duct system, GA—glandular appendage.