Scorpiops thailandus, 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 : 117-122

Scorpiops thailandus sp. n.

( Figures 754–778 , 780–787 , 789, 791 , 793–799 , 814 , Tables 8 –9) http: //zoobank. org / urn: lsid: zoobank. org: act: 2B2A8926-

46D3-45F8-987F-0164EDADE5EA

Vietscorpiops sp. : Šťáhlavský et al., in press.

TYPE LOCALITY AND TYPE REPOSITORY. Thailand, Nakhon Nayok Province, Khao Yai (14.51°N 101.39°E) ; FKCP.

TYPE MATERIAL ( FKCP). Thailand, Nakhon Nayok Province, Khao Yai (14.51°N 101.39°E), 2013, 1♀ (paratype), leg. M. Černička, 4♂ 5♀ (holotype and paratypes, 513, 525), breed F. Kovařík 2013-2015; Nakhon Ratchasima Province, Pak Chong (14.73°N 101.42°E), ca. 60 km of Saraburi, X.2004, 2♀ (paratypes), leg . V. Fura; Phetchabun Province, Nam Nao ( Fig. 798 , 16.86 °N 101.31°E), ca. 130 km E of Phitsanulok, X.2004, 1♂ (paratype), leg . V. Fura.

ETYMOLOGY. Named after the locality of occurrence.

DIAGNOSIS (♂ ♀). Total length 23–28 mm. Base color uniformly reddish black. Pectine teeth number 6–7 in males and 5–6 in females, fulcra absent. Pectines with 2 marginal and 1–3 middle lamellae. Patella of pedipalp with 17 (5 eb, 2 esb, 2 em, 4 est, 4 et) external trichobothria and 8–9 ventral trichobothria. Chela of pedipalp with 4 V series trichobothria located on ventral surface. Chelal trichobothrium Eb 3 located in middle of manus at same level as Dt. Fingers of pedipalps slightly straight in both sexes; male has small internal apophysis on movable finger. Chela length to width ratio 3.6–3.7 in male and 3.2 in female. Pedipalp movable finger with 25–30 IAD, ca. 55 MD which create 10 straight rows in a line and there are also 4–5 ID and 11 OD present. Tarsomere II of legs with row of 6–7 stout median ventral spinules and two pairs of flanking setae. Metasoma I–II with 10 carinae, and metasoma III–IV with 8 carinae. Telson rather elongate, sparsely granulate, more so in male, length to depth ratio 2.8 in male and 3 in female; annular ring present.

DESCRIPTION (♂ ♀). Total length 23–28 mm. Habitus as shown in Figs. 754–757 . For position and distribution of trichobothria on pedipalps, see Figs. 766a–771a . Sexual dimorphism: adult males have larger pectines than females; pedipalp chela and patella are more narrow in male; fingers of pedipalps are straight in both sexes ( Figs. 767 and 774 ); male has the small apophysis on the internal surface of the movable finger reduced in size ( Fig. 791 ).

Coloration ( Figs. 754–757 , 793–797 ). Base color uniformly reddish black to black. Legs and telson are yellow to reddish brown, sternites lighter, yellowish to reddish brown. Chelicerae yellowish brown and reticulate, fingers reddish brown.

Carapace and mesosoma ( Figs. 754–757 , 780–783 ). Entire carapace covered with minute granules; carinae absent. Anterior margin of carapace with a deep median notch. Carapace with two, or two normal and one reduced pairs of lateral eyes. Mesosoma granulated, with one median carina developed. Tergite VII is pentacarinate. Sternites smooth or finely granulated with two parallel furrows except sternite VII which is strongly granulated with two carinae incomplete. Pectine teeth number 6–7 in males and 5–6 in females. Pectines with 2 marginal and 1–3 middle lamellae; fulcra absent.

Metasoma and telson ( Figs. 758–765 ). 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 and V indicated by isolated granules that may coalesce into carinae. Dorsolateral carinae of segments II–IV terminate posteriorly in a pronounced tooth. Telson elongate and granulate, more so in males, with annular ring developed in both sexes.

Pedipalps ( Figs. 766–778 ). Pedipalps very sparsely hirsute. Patella with 17 (5 eb, 2 esb, 2 em, 4 est, 4 et) external and 8–9 ventral trichobothria. Chela with 4 V series trichobothria located on the ventral surface. Femur and patella are finely granulated. Femur with 3–4 granulose carinae, and patella with 5 carinae, with dorsal patellar spurs reduced and ventral patellar spurs pronounced. Manus dorsally with fine reticulated, rounded granules, which in the central area form an irregular dorsal secondary carina. External surface of chela covered by minute granules, with an almost complete external secondary carina with larger sparse granules. Movable fingers with ca. 25–30 IAD, ca. 55 MD which create 10 straight rows in a line and there are also 4–5 ID and 8 OD present.

Legs ( Figs. 784–787 ).Tibia and tarsomeres of legs with several setae not arranged into bristle combs on dorsal surfaces, but with rows of spinules on dorsolateral surfaces and on legs I – II also on ventrolateral surface. Tarsomere II of legs with row of 6–7 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 8.

AFFINITIES. See comments under diagnosis of S. farkaci .

DISTRIBUTION. Thailand ( Fig. 799 ).

Figures

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

Figures 754–757: Scorpiops thailandus sp. n. Figures 754–755. Male holotype in dorsal (754) and ventral (755) views. Figures 756–757. Female paratype in dorsal (756) and ventral (757) views. Scale bar: 10 mm.

Figures 758–765: Scorpiops thailandus sp. n. Figures 758–760, 762. Male holotype, metasoma and telson lateral (758), ventral (759), and dorsal (760) views, and telson lateral (762). Figures 761, 763–765. Female paratype, telson lateral (761), and metasoma and telson lateral (763), ventral (764), and dorsal (765) views. Scale bars: 10 mm (758–760, 763–765).

Figures 766–779: Figures 766–778: Scorpiops thailandus sp. n., pedipalp segments. Figures 766–772. Female paratype, chela dorsal (766), external (767) and ventral (768) views. Patella dorsal (769), external (770) and ventral (771) views. Trochanter and femur in dorsal (772) view. Trichobothrial pattern is indicated by white circles (766a–771a). Figures 773–778. Male holotype, chela dorsal (773), external (774) and ventral (775) views. Patella dorsal (776), external (777) and ventral (778) views. Figure 779. Scorpiops farkaci, male paratype, telson lateral.

Figures 780–787: Scorpiops thailandus sp. n. Figures 780, 782, 784–787. Male holotype, carapace and tergites I–III (780), coxosternal area and sternites (782), left legs I–IV, retrolateral aspect (784–787 respectively). Figures 781, 783. Female paratype, carapace and tergites I–IV (781), and coxosternal area and sternites III–IV (783).

Figures 788–792: Comparison males of three similar species Scorpiops farkaci (788, 790), S. thailandus sp. n. (789, 791), and S. phatoensis sp. n. (792). Figures 788–789. Pedipalp chela internal views. Figures 790–792. Movable finger dentition under UV light.

Figures 793–794: Scorpiops thailandus sp. n., female (793) and male (794) paratypes in vivo habitus.

Figures 795–796: Scorpiops thailandus sp. n., female paratype with newborns (795) and with juveniles after first ecdysis (796).

Figures 797–798: Scorpiops thailandus sp. n., male paratype shortly after adulthood (fifth) ecdysis (797) and locality Thailand, Nam Nao (798).

Figures 808–815: Male karyotypes of scorpiopid species based on postpachytene. Figure 808. Scorpiops oligotrichus (2n=105, 51II+III). Figure 809. Scorpiops pakseensis sp. n. (2n=87, 42II+III). Figure 810. Scorpiops phatoensis sp. n. (2n=105, 51II+III). Figure 811. Scorpiops problematicus (2n=97, 47II+III). Figure 812. Scorpiops schumacheri sp. n. (2n=63, 60II+III). Figure 813. Scorpiops sherwoodae sp. n. (2n=104, 52II). Figure 814. Scorpiops thailandus sp. n. (2n=147, 72II+III). Figure 815. Scorpiops thaomischi (2n=94, 47II). 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.

Figures 10–20: Scorpiops spp., pedipalp chela external (10–16, 18 and 20) and dorsal (17 and 19) views. Trichobothria Dt and Eb are 3 indicated by white open circles. Figures 10–14. S. montanus, juvenile, holotype, ZMHB (10), female (11) and male reared from litter of female 11 (12), India, Uttarakhand State, Dhika forest, 29.65°N 78.94°E, FKCP, female (13) and male (14) from India, Uttarakhand State, Rishikesh, 30.13°N 78.32°E, FKCP. In the juvenile holotype, Eb 3 is located distal to Dt (Fig. 10); in the female from Dhika forest, Eb 3 is located slightly distal to Dt (Fig. 11) but the male from her litter has Eb 3 proximal to Dt (Fig. 12); in both specimens from Rishikesh, Eb 3 is proximal to Dt but its relative position differs between individuals (Figs. 13–14). Figure 15. S. hardwickii, female, India, Uttaranchal State, ca. 30 km of Bageshwar, SE of Dhakuri vill., 2600–2800 m a. s. l., FKCP. Figure 16. S. asthenurus, male, India, Meghalaya State, Nong Poh env., FKCP. Figures 17–18. S. petersii, male, India, Himachal Pradesh State, Molta, FKCP. Figures 19–20. S. vonwicki, female, holotype, ZISP.