Reddyanus jayarathnei Kovařík, 2016

Kovařík, František, Lowe, Graeme, Ranawana, Kithsiri B., Hoferek, David & Š, V. A., 2016, Scorpions of Sri Lanka (Scorpiones Buthidae, Chaerilidae, Scorpionidae) with description of four new species of the genera Charmus Karsch, 1879 and Reddyanus Vachon, 1972, stat n, Euscorpius 220, pp. 1-133 : 66-76

Reddyanus jayarathnei Kovařík , sp. n.

( Figs. 14 , 206 , 215–216 , 231–232 , 248, 257 , 334–357 , 415–416 , 569, Tables 4–5 )

http://www.zoobank.org/urn:lsid:zoobank.org:act:F E1515A9-8302-46D4-8298-11BFB4555882

TYPE LOCALITY AND TYPE REPOSITORY. Sri Lanka, Galle district , Kanneliya Rain Forest, 06°15'04" N 80°20'18" E; UPSL.

TYPE MATERIAL. Sri Lanka, Galle District , Kanneliya Rain Forest, 06°15'04" N 80°20'18" E ( Fig. 357 ), 1♂ (holotype, Fig. 356 ) 1♀ (paratype, Fig. 355 ), UPSL , 1♂ (paratype, Figs. 206 , 215 , 231 , 248, 257 , 334–335 , 338, 340, 343–351 , 415 , 569) 1♀ (paratype, Figs. 216 , 232 , 336–337 , 339, 341–342 , 352–354 , 416 ), FKCP, V.– XI.2015, leg. S. Jayarathne.

ETYMOLOGY. Named after V. A. Sanjeewa Jayarathne who collected the types.

DIAGNOSIS. Total length 37.1 mm (female) – 45.5 mm (male). Male with slightly longer metasomal segments and telson than female. Pedipalp segments approximately the same length and width in both sexes. Pedipalp movable finger longer than manus of chela in both sexes. Pedipalps and legs with brown maculation, identical on femur and patella. First metasomal segment bears 10 carinae, second through fourth segments bear eight carinae, fifth segment bears five carinae in female and three to five in male. Posterior terminal tubercle of each dorsal carina on metasomal segments of both sexes scarcely larger than preceding tubercles. Subaculear tooth wide and rounded, dorsally with granules in four rows; six symmetrical granules in three rows and one or two granules on tip. Ratio of metasomal segment II length/ width 1.81 in male. Glabrous zone on posterior part of fifth sternite present medially in male. Pectinal teeth number 12 in female, 14 in male.

DESCRIPTION. Total length 37.1 mm (female paratype) – 45.5 mm (male holotype). The habitus is shown in Figs. 334–337 . For measurements and ratios see Tables 4–5 . For position and distribution of trichobothria of pedipalps see Figs. 344–348 . The male has slightly longer metasomal segments and telson than the female ( Figs. 349– 354 ).

Coloration ( Figs. 334–337 ). Entire mesosoma and carapace dark, almost black with yellow to reddish spots. Chelicera strongly reticulated, with spotted fingers. Pedipalps dorsally and laterally reddish, with brown to black spots, identical on femur and patella. Pedipalp chela fingers reddish black. Legs with same color and pattern as pedipalp femur and patella. Metasomal segments reddish brown with the spots. Telson reddish brown with spots.

Mesosoma and carapace ( Figs. 338–341 ). Carapace without carinae but with large granules. Mesosoma with one granulated median carina. Tergite VII pentacarinate. Fifth sternite with glabrous zone on posterior medial part in the male. Seventh sternite with four incomplete carinae, sparsely granulate. Pectinal tooth count is 12 in the female, 14 in the male. Pectines with three marginal lamellae and seven middle lamellae. The lamellae bear numerous pale setae.

Metasoma and telson ( Figs. 215–216 , 349–354 , 415– 416 ). The first metasomal segment bears 10 carinae and the second to the fourth segments bear eight carinae, the fifth segment bears five carinae well developed in the female and only indicated or absent in the male. Lateral inframedian carinae may be indicated on second metasomal segment. Ventral carina present on telson. Intercarinal surfaces of metasoma granulated including dorsal surface mainly in the female. In both sexes, posterior terminal tubercle of each dorsal carina on metasomal segments not enlarged. Telson elongate, with subaculear tooth wide and rounded, dorsally with granules in four rows; six symmetrical granules in three rows and one or two granules on the tip.

Pedipalps ( Figs. 231–232 , 342–348 ). Femur and patella only very sparsely hirsute, with complete carinae, granulated. Dorsal carinae indicated on chela manus in both sexes. Sixth row of granules on movable finger with one external granule. The seventh row of granules on the fixed finger without additional granules.

Legs ( Fig. 206 ). Femur and patella bear complete carinae and are granulated. Legs hirsute without bristle combs.

AFFINITIES. The described features distinguish R. jayarathnei sp. n. from all other species of the genus. R. jayarathnei sp. n. is well characterized by the glabrous zone on the posterior medial part of the fifth sternite in the male, which is not as extensive in R. ranawanai sp. n. ( Fig. 570 versus Fig. 569 ) and is absent in other Sri Lankan Reddyanus species ( Figs. 567–568 ).

Figures

Figures 12–15: Maps showing the known geographical distribution of the Sri Lankan species.

Figures 201–208: Distal segments of legs, retroventral view of Sri Lankan Reddyanus. Figures 201–204. R. ceylonensis sp. n., male holotype from locality 15CI, legs I–IV. Figures 205–208. Leg IV. R. besucheti, male from locality 15CD (205), R. jayarathnei sp. n., male paratype (206), R. loebli, male from locality 15CG (207), and R. ranawanai sp. n., male holotype (208).

Figures 209–224: Metasomal segments II–III, lateral view of Sri Lankan Reddyanus and Isometrus species. Figures 209–210. Reddyanus basilicus, male (209) and female (210) from locality 15CR. Figures 211–212. R. besucheti, male holotype (211) and female from locality 15CG (212). Figures 213–214. R. ceylonensis sp. n., male holotype (213) and female paratype from locality 15CI (214). Figures 215–216. R. jayarathnei sp. n., male (215) and female (216) paratypes. Figures 217–218. R. loebli, male (217) and female (218) from locality 15CG. Figures 219–220. R. ranawanai sp. n., male holotype (219) and female paratype (220). Figures 221–222. Isometrus maculatus, male from locality 15CP (221) and female from locality 15CI (222). Figures 223– 224. I. thwaitesi, male from locality 15CH (223) and female from locality 15CO (224).

Figures 225–240: Pedipalp, dorsal view of Sri Lankan Reddyanus and Isometrus species. Figures 225–226. Reddyanus basilicus, male (225) and female (226) from locality 15CR. Figures 227–228. R. besucheti, male from locality 15CD (227) and female from locality 15CG (228). Figures 229–230. R. ceylonensis sp. n., male holotype (229) and female paratype from locality 15CI (230). Figures 231–232. R. jayarathnei sp. n., male (231) and female (232) paratypes. Figures 233–234. R. loebli, male (233) and female (234) from locality 15CG. Figures 235–236. R. ranawanai sp. n., male holotype (235) and female paratype (236). Figures 237–238. Isometrus maculatus, male from locality 15CP (237) and female from locality 15CI (238). Figures 239–240. I. thwaitesi, male from locality 15CH (239) and female from locality 15CO (240).

Figures 241–259: Pedipalp chela dorsal (241), movable finger (242–250), and fixed finger (251–259) of Sri Lankan Isometrus, Lychas, and Reddyanus species. Figures 241–242, 252. Isometrus maculatus, female from locality 15CO (241) and male from locality 15CP (242, 252). Figures 243–244, 253. I. thwaitesi, male from locality 15CH (243) and female from locality 15CO (244, 253). Figures 245, 254. Reddyanus basilicus, male from locality 15CS. Figures 246, 255. R. besucheti, male from locality 15CD. Figures 247, 256. R. ceylonensis sp. n., male holotype. Figures 248, 257. R. jayarathnei sp. n., male paratype. Figures 249, 258. R. loebli, male from locality 15CG. Figures 250, 259. R. ranawanai sp. n., male holotype. Figure 251. Lychas srilankensis, male from locality 15CO.

Figures 334–337: Reddyanus jayarathnei sp. n., paratypes. Figures 334–335. Male in dorsal (334) and ventral (335) views. Figures 336–337. Female in dorsal (336) and ventral (337) views. Scale bar: 10 mm.

Figures 338–348: Reddyanus jayarathnei sp. n., paratypes. Figures 338, 340, 343–348. Male, chelicerae, carapace and tergites I–III (338), sternopectinal region (340). Pedipalp chela, dorsal (343), external (344) and ventral (345) views. Pedipalp patella, dorsal (346) and external (347) views. Pedipalp femur and trochanter dorsal (348) view. The trichobothrial pattern is indicated in Figures 344–348. Figures 339, 341–342. Female, chelicerae, carapace and tergites I–III (339), sternopectinal region and sternite III (341), and pedipalp chela dorsal view (342).

Figures 349–354: Reddyanus jayarathnei sp. n., paratypes. Figures 349–351. Male, metasoma and telson, lateral (349), ventral (350), and dorsal (351) views. Figures 352–354. Female, metasoma and telson, lateral (352), ventral (353), and dorsal (354) views. Scale bar: 10 mm.

Figures 355–357: Reddyanus jayarathnei sp. n., female paratype (355) and male holotype (356) at the type locality (357), Galle district, Kanneliya Rain Forest, 06°15'04" N 80°20'18" E.

Figures 403–429: Telson, lateral view of Sri Lankan Buthidae and Chaerilidae species. Figures 403–404. Isometrus maculatus, male from locality 15CP (403) and female from locality 15CI (404). Figures 405–406. I. thwaitesi, male from locality 15CH (405) and female from locality 15CO (406). Figures 407–408. Lychas srilankensis, male (407) and female (408) from locality 15CJ. Figures 409–410. Reddyanus basilicus, male (409) and female (410) from locality 15CR. Figures 411–412. R. besucheti, male holotype (411) and female from locality 15CG (412). Figures 413–414. R. ceylonensis sp. n., male holotype (413) and female paratype (414) from locality 15CI. Figures 415–416. R. jayarathnei sp. n., male (415) and female (416) paratypes. Figures 417–418. R. loebli, male (417) and female (418) from locality 15CG. Figures 419–420. R. ranawanai sp. n., male holotype (419) and female paratype (420). Figures 421–422: Buthoscorpio sarasinorum, male from locality 15CF (421) and female from locality 15CG (422). Figures 423–424. Charmus laneus, male (423) and female (424) from locality 15CO. Figures 425–426. Charmus saradieli sp. n. male paratype (425) (MHNG) and female holotype (426). Figurs 427. Hottentotta tamulus, male from locality 15CK (427). Figures 428–429. Chaerilus ceylonensis, male (428) and female (429) from locality 15CD.

Figures 555–570: Key characters for distinguishing males of Sri Lankan Isometrus and Reddyanus. Figures 555–556, 565– 566. Pedipalp chela dorsal view, I. maculatus from locality 15CP (555), I. thwaitesi from locality 15CH (556), R. basilicus, holotype (565), and R. besucheti, holotype (566). Figures 557–558. Sternopectinal area, I. maculatus from locality 15CP (557), and I. thwaitesi from locality 15CH (558). Figures 559–560, 567–570. Sternite V, I. maculatus from locality 15CP (559), I. thwaitesi from locality 15CH (560), R. besucheti, from locality 15CF (567), R. ceylonensis sp. n., holotype (568), R. jayarathnei sp. n., paratype (569), and R. ranawanai sp. n., paratype (570). Figures 561–564. Metasomal segment II lateral (561–562) and pedipalp patella dorsal (563–564), R. loebli from locality 15CG (561, 563) and R. besucheti, from locality 15CF (562, 564).