Scorpiops krabiensis, Kovařík & Lowe & Stockmann & Šťáhlavský, 2020

Kovařík, František, Lowe, Graeme, Stockmann, Mark & Šťáhlavský, František, 2020, Revision of genus-group taxa in the family Scorpiopidae Kraepelin, 1905, with description of 15 new species (Arachnida Scorpiones), Euscorpius 325, pp. 1-140 : 70-74

Scorpiops krabiensis sp. n.

( Figures 180 , 186 , 361 , 486–512 , 799 , 805 , Tables 4, 9) http: //zoobank. org / urn: lsid: zoobank. org: act: 54 F65562 -

5B86-4F3F-B08D-18D699AC22DB

Alloscorpiops / Dasyscorpiops sp. 2 : Šťáhlavský et al., in press.

TYPE LOCALITY AND TYPE REPOSITORY. Thailand, Krabi Province, Krabi, 8.120417°N 98.916539°E; FKCP .

TYPE MATERIAL ( FKCP). Thailand, Krabi Province, Krabi, Suan Phrueksa Sawan Viewpoint , 8.120417°N 98.916539°E, 240 m a. s. l, 22.I.2020 , 22:00 - 01:00 h, UV detection, in rock crack, in ambush position, recently molted to adulthood, waning moon, 1♂ (holotype, 1829), leg. M. Stockmann; Krabi, Tiger Cave Temple, 8.1275000°N 98.9244440°E, 80 m a.s.l., 27.VIII.2019 , UV detection, in rock crack at rock face, waning moon, 1♂ juv. (paratype, 1771), leg. Peter Kautt.

ETYMOLOGY. Named after the locality of occurrence.

DIAGNOSIS (♂). Total length 65 mm. Base color uniformly reddish black to black. Telson and legs reddish brown. Pectine teeth number 12 in males; fulcra reduced to absent; 3 marginal and 4 middle lamellae. Patella of pedipalp with 60–61 external and 26–28 ventral trichobothria. Chela trichobothrium Eb 3 located in distal half of manus between trichobothria Dt and Est. Chela of pedipalp with 19 V series trichobothria, of which the 2–3 most proximal are located on external surface of manus. Fingers of pedipalps undulate in male. Chela length to width ratio 3.89. Pedipalp movable finger with ca. 60 IAD, which have the same size as MD (ca. 95 in number) and create a second row; there are also 6 ID and 15 OD present. Tarsomere II of leg III with 4–5 stout median ventral spinules and two pairs of flanking setae. Metasoma I with 10 carinae and metasoma II–IV with 8 carinae. Telson elongate and granulate, length to depth ratio 3.40 in male; annular ring present.

DESCRIPTION (♂). Total length 65 mm. Female unknown. Habitus as shown in Figs. 486–489 . For position and distribution of trichobothria on pedipalps, see Figs. 497–500, 503 and 506 . Fingers of pedipalps undulate in male ( Fig. 498 ). Coloration ( Figs. 511–512 ). Base color uniformly reddish black to black. Telson, legs, and sternites are reddish brown. Chelicerae yellowish brown and reticulate, fingers black.

Carapace and mesosoma ( Figs. 486–492 ). Entire carapace covered with large granules; carinae absent. Anterior margin of carapace with a deep median notch. Carapace with 3 pairs of lateral eyes of which two are normal and one is reduced. Mesosoma granulated, with one median carina. Tergite VII is pentacarinate. Sternites smooth with two parallel furrows except sternite VII which is granulate and has four granulate carinae. Pectine teeth number 12 in males. Pectines with 3 marginal and 4 middle lamellae; fulcra reduced to absent.

Metasoma and telson ( Figs. 493–496 ). Metasoma sparsely hirsute and granulated, with sparse, relatively large granules. Metasomal segment I with 10 carinae, II–IV with 8 carinae, and V with 5 carinae. Median lateral carinae of metasoma II– III and V indicated by isolated granules that may coalesce into carinae. Dorsolateral carinae of second to fourth segments terminate posteriorly in a pronounced tooth. Telson elongate sparsely granulate with annular ring developed.

Pedipalps ( Figs. 497–505 ). Pedipalps very sparsely hirsute. Patella with 60–61 external and 26–28 ventral trichobothria. Chela with 19 ventral trichobothria from which 2–3 are located on external surface. Femur and patella granulated. Femur with 5–6 granulose carinae, and patella with 5 carinae, with dorsal and ventral patellar spurs pronounced. Manus dorsally with fine, rounded reticulated granules, which in the central area form an irregular dorsal secondary carina. External surface of chela densely covered by minute granules, with a regular external secondary carina. Movable fingers bear ca. 60 IAD, which have the same size as MD (ca. 95 in number) and create a second row; there are also 6 ID and 15 OD present.

Legs ( Figs. 507–510 ). Tibia and tarsomeres of legs with several setae not arranged into bristle combs but with rows of spinules on dorsolateral surfaces and on legs I – II also on ventrolateral surface. Tarsomere II of legs I–IV with 4–5 stout median ventral spinules and two pairs of flanking setae. Femur with 3–4 and patella 4–5 carinae; both femur and patella granulated.

Measurements. See Table 4.

Figures

Figure 186: Dentition of crown-like structures (cls) and distal posterior lobe (dpl) apex of 16 scorpiopids. Species are grouped according to four major clades resolved by DNA analysis (Šťáhlavský et al., in press). To highlight inconsistency of the trichobothrial classification with molecular phylogeny, previously described species are listed under genera (in quotes) where they were originally placed according to trichobothriotaxic characters of Soleglad & Fet (2001). Cited ranges of cls denticle counts for each species represent data from both left and right hemispermatophores extracted from all available specimens: N =1, except for “Alloscorpiops” wongpromi (N = 2), “A.” anthracinus (N = 2), Scorpiops thaomischi (N = 2), and “Euscorpiops” problematicus (N = 3). Data with N> 1 reveal intraspecific stability of cls dentition patterns, and intraspecific variability of dpl denticulation patterns. Right insets: convex (upper inset) and concave (lower inset) views of whole hemispermatophore of Scorpiops kautti sp. n. Anatomical structures and measurements are indicated. Scale bar: 2 mm.

Figure 799. Geographic distribution of the family Scorpiopidae. The map plots locality

Figures 170–185: Hemispermatophore capsules of 16 scorpiopids. Convex aspect of capsules of: Scorpiops oligotrichus (170), S. citadelle (171), S. sherwoodae sp. n. (172), S. montanus (173), S. pakseensis sp. n. (174), S. leptochirus (175), S. phatoensis sp. n. (176), S. schumacheri (177), S. wongpromi (178), S. kautti sp. n. (179), S. krabiensis sp. n. (180), S. birulai sp. n. (181), S. anthracinus (182), S. thaomischi (183), S. dii sp. n. (184) and S. problematicus (185). Specimen number of S. krabiensis 1829, of others as indicated in Figs. 149–163. Scale bars: 400 μm (170–175, 178–185), 200 μm (176–177).

Figures 359–362. Thailand, type localities of Scorpiops birulai sp. n. (359), S. kautti sp. n. (360), S. krabiensis sp. n. (361), and S. phatoensis sp. n. (362).

Figures 486–489: Scorpiops krabiensis sp. n. Figures 486–487. Male holotype in dorsal (486) and ventral (487) views. Figures 488–489. Male juvenile paratype in dorsal (488) and ventral (489) views. Scale bar: 10 mm.

Figures 490–496: Scorpiops krabiensis sp. n., male holotype. Figures 490–492. Carapace and tergites I–IV (490), coxosternal area and sternites (491), lateral and median eyes (492). Figures 493–496. Telson lateral (493), and metasoma and telson lateral (494), ventral (495), and dorsal (496) views. Scale bar: 10 mm (494–496).

Figures 497–506. Scorpiops krabiensis sp. n., male holotype, pedipalp segments. Chela dorsal (497), external (498) and ventral (499) views. Patella dorsal (500), external (501 and 506) and ventral (502) views. Trochanter and femur dorsal (503) and ventral (504) views. Movable finger (505) dentition under UV light. Trichobothrial pattern is indicated by white circles (497–500, 503, 506).

Figures 507–510. Scorpiops krabiensis sp. n., male holotype, left legs I–IV, retrolateral aspect.

Figures 511–512. Scorpiops krabiensis sp. n., male holotype (511) and male juvenile paratype (512), in vivo habitus.

Figures 800–807: Male karyotypes of scorpiopid species based on postpachytene. Figure 800. Scorpiops anthracinus (2n=105, 51II+III). Figure 801. Scorpiops birulai sp. n. (2n=99, 96II+III). Figure 802. Scorpiops citadelle (2n=104, 52II). Figure 803. Scorpiops dii sp. n. (2n=109, 53II+III). Figure 804. Scorpiops kautti sp. n. (2n=87, 42II+III). Figure 805. Scorpiops krabiensis sp. n. (2n=81, 39II+III). Figure 806. Scorpiops leptochirus (2n=96, 48II). Figure 807. Scorpiops montanus (2n=70, 35II). Insets show the location of 18S rDNA (red signal) on the same chromosome as in the karyogram (ppach) and additionally on chromosomes during pachytene (pach) or metaphase II (met II). Abbreviation of postpachytene configuration: II – bivalent, III – trivalent. Scale bar: 10 μm.