Scorpiops schumacheri, 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 : 101-109

Scorpiops schumacheri sp. n.

( Figures 156 , 177 , 186 , 653–689 , 692–693, 695, 699–700, 704, 705 , 799 , 813 , Tables 6, 9) http: //zoobank. org / urn: lsid: zoobank. org: act: 7974FB0F-

ECBC-43E1-B115-DD8E41F2D614

Euscorpiops sp. 2 : Šťáhlavský et al., in press.

TYPE LOCALITY AND TYPE REPOSITORY. Thailand, Trang Province, Trang, 7.565100°N 99.623855°E; FKCP .

TYPE MATERIAL ( FKCP). Thailand, Trang Province, Trang, 7.565100°N 99.623855°E , captive bred, 1♂ (holotype, 1821), leg M. Stockmann; Trang, 7.565100°N 99.623855°E, X.2018 , UV detection, 5♀ (paratypes, 1562, 1639, 1733), local collector .

ETYMOLOGY. It is a pleasure to name this species after Patrick Schumacher ( Germany) who collected some scorpions together with Mark Stockmann.

DIAGNOSIS (♂ ♀). Total length 23–26 mm. Base color uniformly yellowish brown to reddish black. Legs and telson yellow to orange. Pectine teeth number 6 in male and 4–5 in females, fulcra reduced. Marginal lamella III present, other surfaces of pectines form one compact unit with an incomplete furrow between areas where marginal and middle lamellae are usually delimited. Patella of pedipalp with 16 (5 eb, 2 esb, 2 em, 3 est, 4 et) external trichobothria and 7 ventral trichobothria. Chela of pedipalp with 4 V series trichobothria located on ventral surface. Chelal trichobothrium Eb 3 located in middle of manus usually between trichobothria Dt and Est. Fingers of pedipalps undulate in male and straight in females. Chela length to width ratio 2.57 in male, 3.15–3.17 in females. Pedipalp movable finger with 25–28 IAD and 42–48 MD which create two irregular parallel rows; ID and OD absent, or incorporated into these two rows. Tarsomere II of legs with row of 5–8 stout median ventral spinules. Telson is sparsely granulate, bulbous in males and elongate in females, length to depth ratio 2.72 in male and 3.16 in females; annular ring developed in both sexes.

DESCRIPTION (♂ ♀). Total length 23–26 mm. Habitus as shown in Figs. 653–656 . For position and distribution of trichobothria on pedipalps, see Figs. 669–675 . Sexual dimorphism: adult males have larger pectines than females; pedipalp chela is more narrow in female; fingers of pedipalps undulate in male and straight in females ( Figs. 670 and 680 ).

Coloration ( Figs. 653–656 , 686–689 ). Base color uniformly yellowish brown to reddish black. Legs and telson yellow to orange, sternites lighter. Chelicerae yellowish brown and reticulate, fingers reddish brown.

Carapace and mesosoma ( Figs. 653–656 , 657–658 ). Entire carapace sparsely covered with minute 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. Mesosomafinely granulated, with one median carina developed. Tergite VII is pentacarinate. Sternites smooth to finely granulated with two parallel furrows, sternite VII is finely granulated without carinae. Pectine teeth number 6 in male and 4–5 in females. Pectinal marginal lamella III present, other surfaces of pectines create one compact unit with unfinished furrow between locations of marginal and middle lamellae. Fulcra absent.

Metasoma and telson ( Figs. 663–668 ). Metasoma sparsely hirsute and granulated, with sparse, relatively large granules. Metasomal segment I–IV with 8 carinae, and V with 5 carinae. Median lateral carinae of metasoma I–V indicated by isolated granules that may coalesce into carinae. Dorsolateral carinae of segments II–IV do not terminate posteriorly in a pronounced tooth. Telson elongate and sparsely granulate with annular ring present in both sexes.

Pedipalps ( Figs. 669–685 ). Pedipalps very sparsely hirsute. Patella with 16 (5 eb, 2 esb, 2 em, 3 est, 4 et) external and 7 ventral trichobothria. Chela with 4 V series trichobothria located on ventral surface. Femur and patella are finely granulated. Femur with 3–4 granulose carinae, and patella with 5 carinae, and dorsal and ventral patellar spurs. Manus dorsally with fine rounded granules. External surface of chela covered by minute granules, with an almost complete external secondary carina with larger sparse granules. Movable fingers with 25–28 IAD and 42–48 MD which create two irregular parallel rows; ID and OD absent or incorporated into these two rows.

Legs ( Figs. 659–662 ). 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 5–8 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 6.

AFFINITIES. The most similar species are S. neradi , S. phatoensis sp. n., and S. schumacheri sp. n. (see affinities under description of S. dunlopi sp. n. where S. schumacheri sp. n. is differentiated from S. dunlopi sp. n. and S. phatoensis sp. n.). Fingers of pedipalps are more strongly and differently undulate in male S. neradi compared to male S. schumacheri sp. n. (see Fig. 691 versus 693), and the pedipalp patella of S. neradi has 6 ventral trichobothria while that of S. schumacheri sp. n. has 7.

DISTRIBUTION. Thailand ( Fig. 799 ).

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 149–163: Whole hemispermatophores of 15 scorpiopids. Convex (external) aspect of hemispermatophores of: Scorpiops oligotrichus (149), S. citadelle (150), S. sherwoodae sp. n. (151), S. montanus (152), S. pakseensis sp. n. (153), S. leptochirus (154), S. phatoensis sp. n. (155), S. schumacheri (156), S. wongpromi (157), S. kautti sp. n. (158), S. birulai sp. n. (159), S. anthracinus (160), S. thaomischi (161), S. dii sp. n. (162) and S. problematicus (163). Specimen numbers indicated. Scale bars: 2 mm (149–154, 157–161, 163), 1 mm (155–156, 162).

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 653–656: Scorpiops schumacheri sp. n. Figures 653–654. Male holotype in dorsal (653) and ventral (654) views. Figures 655–656. Female paratype in dorsal (655) and ventral (656) views. Scale bar: 10 mm.

Figures 657–668: Scorpiops schumacheri sp. n. Figures 657–663, 666–668. Male holotype, carapace and tergites I–IV (657), coxosternal area and sternites (658), right legs I–IV, retrolateral aspect (659–662 respectively), telson lateral (663), and metasoma and telson lateral (666), ventral (667), and dorsal (668) views. Figures 664–665. Female paratype, telson lateral (664), and metasoma and telson lateral (665). Scale bar: 10 mm (665–668).

Figures 669–678. Scorpiops schumacheri sp. n., male holotype, pedipalp segments.Chela dorsal (669), external (670) and ventral (671) views. Patella dorsal (672), external (673) and ventral (674) views. Trochanter and femur dorsal (675) and ventral (676y) views. Movable (677) and fixed (678) finger dentition. Trichobothrial pattern is indicated by white circles (669–675).

Figures 679–685. Scorpiops schumacheri sp. n., female paratype, pedipalp segments. Chela dorsal (679), external (680) and ventral (681) views. Patella dorsal (682), external (683) and ventral (684) views. Movable finger dentition (685).

Figures 686–687. Scorpiops schumacheri sp. n., male holotype (686) and female paratype (687) in vivo habitus.

Figures 688–689. Scorpiops schumacheri sp. n., female paratype with newborns (688) and with juveniles after first ecdysis (689).

Figures 690–707: Comparison of three similar species Scorpiops neradi (690–691, 693, 697–698, 703, 705), S. schumacheri sp. n. (692–693, 695, 699–700, 704, 705), and S. dunlopi sp. n. (696, 701–702, 707). Figures 690–693, 697–702. Pedipalp chela dorsal and external views of males (690–693) and females (697–702). Figures 694–696. Movable finger dentition under UV light. Figures 703–707. Telson lateral views of males (703–704) and females (705–707).

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.