Scorpiops bhutanensis Tikader & Bastawade, 1983

Lv, He-Yu & Di, Zhi-Yong, 2022, The first record of Scorpiops bhutanensis Tikader & Bastawade, 1983 from China, with the first report of its female (Scorpiones: Scorpiopidae), Euscorpius 358, pp. 1-8 : 1-3

publication ID	https://doi.org/ 10.5281/zenodo.7163347
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scientific name	Scorpiops bhutanensis Tikader & Bastawade, 1983
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( Figures 1–33 View Figures 1–4 View Figures 5–14 View Figures 15–25 View Figures 26–33 , Table 1) http://zoobank.org/urn:lsid:zoobank.org:act:8C8E8448-

D879-412E-9944-93EAF1FB531A

Scorpiops (Euscorpiops) bhutanensis Tikader & Bastawade, 1983: 453–458 , figs. 1247–1260.

Scorpiops bhutanensis: Kovařík, 2000:167–168 .

TYPE DATA AND TYPE DEPOSITORY: ♂ holotype, Gomchu , eastern Bhutan ; ZSI (Zoological Survey of India), 5094/18.

MATERIAL EXAMINED. China, Xizang, Shannan City , Cuona County, 1♂, 7 June 2018, leg. Xinglong Bai (Ar.-MHBU- ScXZCN1806070101), 3♀, 30 July 2019, leg. Zhiyong Di (Ar.-MHBU-ScXZCN1907300601–03) .

EMENDED DIAGNOSIS. Adult body length about 46–52 mm. Base color uniformly yellow-brown in males, reddish-brown in females. Patella of pedipalp with 17–19 (5 eb, 2 esb, 2 em, 4–5 est, 5 et), and 7–8 (usually 7) ventral trichobothria in both sexes. Chelal trichobothria Eb3 is located in distal half of manus between trichobothria Dt and Est. Chela with 4 ventral trichobothria. The manus of the pedipalp in the male is very long and narrow. Chela length/width ratio is 6.5–7.7 in males and 3.8 in females, chela fingers on adult male and female scalloped. Pectinal teeth count 7 in males and 6 or 7 in females, fulcra present. Telson elongate and granulate, annular ring present in both sexes.

REDESCRIPTION (based on male specimen Ar.-MHBU-Sc XZCN1806070101).

Coloration ( Figs. 1, 2 View Figures 1–4 ; after remaining in alcohol for four years). Carapace, yellow-brown. Median and lateral ocular tubercles black-brown.Tergites yellow-brown.Metasomal segments blackbrown. Vesicle yellow-brown, with a brown aculeus. Chelicerae yellow-brown; with the fingers dark brown and gradually lighter toward the tip. Pedipalps yellow-brown. Legs yellow. Tarsal claws yellow. Sternum, yellow-brown. Sternites light yellowbrown. Genital operculum and pectines pale yellow.

Carapace ( Figs. 5, 6 View Figures 5–14 ). Integument is coarse, with sparse, fine granules; anterior median furrow, broad and deep; lateral furrow, broad; posterior median furrow, broad and deep. Median eyes situated anteriorly compared to center of carapace; three pairs of lateral ocelli with posterior-most one the smallest. Median ocular tubercle with granules and a median furrow. Lateral ocular tubercle with some coarse granules around lateral eyes.

Chelicerae ( Figs. 9, 10 View Figures 5–14 ). Dorsally with irregular pattern, ventrally with long hairs. Fixed finger of chelicera with 3 large triangular teeth on inner margin; ventral of movable finger with 7 teeth on inner margin, dorsal of movable finger with 5 teeth on inner margin.

Mesosoma. All tergites weakly granular; tergite I to tergite VI without any carina; tergite VII with two pairs of weakly granular carinae( Fig. 11 View Figures 5–14 ). Pectinal teeth count 7/7, fulcra present ( Fig. 13 View Figures 5–14 ). Genital operculum subtriangular with genital papillae protruding ( Fig. 13 View Figures 5–14 ). Sternites smooth and shiny; segment VII with some fine granules and four weak ventral carinae.

Metasoma and telson. Integument is coarse, segments II to V longer than wide; segments I to V with respectively 10-8- 8-8-7 granular carinae; segments I to IV carinated and dorsal carinae weakly crenulated, elevated on segments I & II but much elevated, crenulated more strongly on segments III & IV; segment V with a pair of vestigial lateral carinae. Vesicle with dense granules and few setae ( Fig. 15 View Figures 15–25 ).

Pedipalps. Integument rough with granules and few setae, especially dorsal surface with dense granules. Femur with dorsointernal, dorsoexternal, external, internal, ventroexternal, ventrointernal carinae granulated ( Fig. 16 View Figures 15–25 ). Patella with granules on the dorsointernal, dorsoexternal, ventrointernal, ventroexternal, and external carinae; two spinoid granules present on the internal surface ( Figs. 17–20 View Figures 15–25 ). Trichobothrial pattern C, neobothriotaxic ( Vachon, 1974); patella with 18–19 external trichobothria (5 eb, 2 esb, 2 em, 4–5 est, 5 et), 7 (left) and 8 (right) ventral trichobothria ( Figs. 18–20 View Figures 15–25 ). Chela with 4 ventral trichobothria, all carinae granular and coalesced except the dorsal secondary, dorsal internal, and ventromedian carinae vestigial; movable fingers, and fixed fingers with scalloped margins, a pronounced lobe in the movable finger and a corresponding notch in the fixed fingers ( Figs. 26–29 View Figures 26–33 ).

Legs. Integument coarse with few setae. Trochanter dorsal surface with some small granules. Femur dorsal surface densely granular. Patella dorsal surface densely granular, with dorsoexternal carinae. Tibiae without spurs ( Fig. 33 View Figures 26–33 ). Basitarsus with more setae, spurs, and two lateral pedal spurs ( Fig. 33 View Figures 26–33 ). Tarsus ventrally with a row of spinules ( Fig. 33 View Figures 26–33 ). Tarsal ungues curved and hook-like ( Fig. 33 View Figures 26–33 ).

Variation. Illustrations of an adult females are provided ( Figs. 3, 4 View Figures 1–4 , 7, 8, 12, 14 View Figures 5–14 , 21–25 View Figures 15–25 , 30–32 View Figures 26–33 ). Coloration of adult females is darker than in male: carapace, tergites, and metasoma darkbrown; vesicle and legs yellow-brown, legs with yellowbrown tarsi. Number (left/right) of trichobothria on the external surface of the pedipalp patellae: females with 18/18 (2) and 18/? (1), male with 18/19 (1). Number (left/right) of trichobothria on the ventral surface of the pedipalp patellae: females with 8/8 (1), 7/7 (1), and 7/7 (1), male with 8/7 (1). Number of pectinal teeth: females with 7/6 (1), 6/6 (1) and 7/7 (1), male with 7/7 (1). The pedipalp of the male is longer and narrower than female. Chela with an average length/width ratio of 7.7 in studied male (one adult) and 3.8 in females (three adults). Holotype (male): total length 49.5 mm, patella with 17 external and 7 or 8 ventral trichobothria, pectinal teeth count 7/7 (Tikader & Bastawade, 1983; Kovařík, 2000).

Measurements. See Table 1.

COMMENTS. Tikader & Bastawade (1983) described Scorpiops bhutanensis based on a single male specimen and indicated the position and distribution of trichobothria on the patella of pedipalps (7 or 8 ventral trichobothria and 17 external trichobothria).

DISTRIBUTION. Eastern Bhutan (Gomchu = Gomphu?), China (Xizang) ( Fig. 34 View Figure 34 ).