Scorpiops lourencoi, Lv & Di, 2022

Lv, Heyu & Di, Zhiyong, 2022, Scorpiops lourencoi sp. nov., the revalidation of Scorpiops atomatus Qi, Zhu & Lourenco, 2005, and the redescription of Scorpiops tibetanus Hirst, 1911 (Scorpiones, Scorpiopidae) from China, ZooKeys 1132, pp. 189-214 : 189

publication ID	https://dx.doi.org/10.3897/zookeys.1132.87364
publication LSID	lsid:zoobank.org:pub:B4388BBD-BD51-40F6-8341-ADA7CF276E4B
persistent identifier	https://treatment.plazi.org/id/92D21DC0-794E-4D76-B2F8-28AB9D88520B
taxon LSID	lsid:zoobank.org:act:92D21DC0-794E-4D76-B2F8-28AB9D88520B
treatment provided by	ZooKeys by Pensoft
scientific name	Scorpiops lourencoi
status	sp. nov.

Treatment

Scorpiops lourencoi sp. nov.

Figs 65-68 View Figures 65–68 , 69-78 View Figures 69–78 , 79-88 View Figures 79–88 , 89-96 View Figures 89–96

Scorpiops tibetanus Di et al., 2013: 75, 77, 80, 81, 83, 85, figs 102-118, tab. 2.

Type material.

Male holotype, China, Xizang, Rikaze City (Shigatse City), 26/7/2021, Zhiyong Di leg, (Ar.-MHBU-ScXZRKZ2107260101); 3 male and 3 female paratypes (Ar.-MHBU-ScXZRKZ21072601, 02-06; Ar.-MHBU-ScXZRKZ2107270501), same location data as holotype.

Diagnosis.

Scorpiops lourencoi sp. nov. differs from all other species in the genus based on the following combination of characters: reddish black color, length 45-50 mm; patella of pedipalp with 17 (5 eb, 2 esb, 2 em, 4 est, 4 et) external and eight or nine (usually nine) ventral trichobothria. Chelal trichobothria Eb3 located in proximal half of manus between trichobothria Dt and Db, chela with four ventral trichobothria; chela with an average length/width ratio of 1.9 in males (n = 4 adults) and 2.4 in females (n = 3 adults); pedipalp movable finger with ca. four or five ID, 10-14 IAD, 44-45 MD, and seven or eight OD present; pedipalp chelal fingers on adult males and females scalloped, usually more strongly in male. Pectinal teeth count 8-11 (usually 10) in four males and seven or eight (usually seven) in three females, fulcra present; pectinal with three marginal and five or six middle lamellae. Telson bulbous and granulate, annular ring present.

Etymology.

Patronym in honor of Prof. Wilson R. Lourenço, who significantly contributed to scorpion research.

Description

(based on holotype: Ar.-MHBU-ScXZRKZ2107260101).

Coloration (Figs 65 View Figures 65–68 , 66 View Figures 65–68 ; after one year of preservation in alcohol): Carapace, dark red-brown. Median and lateral ocular tubercles dark brown. Tergites and metasomal segments dark red-brown to dark brown. Vesicle dark brown, with brown aculeus. Chelicerae dark brown; with the fingers dark brown and gradually lighter toward the tip. Pedipalps dark red-brown. Legs dark brown. Tarsal claws yellowish brown. Sternum, genital operculum, and sternites yellowish brown. Pectinal teeth yellowish.

Morphology.

Prosoma (Figs 69 View Figures 69–78 , 70 View Figures 69–78 ): Carapace with dense, coarse granules; shallow anterior median furrow; broad and flat lateral furrow; posterior median furrow broad and deep. Median ocular tubercle high and coarse, with a shallow median furrow, median eyes situated anteriorly compared to center of carapace; three pairs of lateral ocelli, posterior smallest, some large granules near lateral ocelli, and presence of smooth oval area behind the lateral ocular tubercle.

Mesosoma: Integument coarse. Tergites sparsely covered with large coarse granules, posterior part of tergites with larger granules; tergites III-VI with a median carina; tergite VII with two pairs of lateral carinae (outside lateral carinae degenerated) (Fig. 76 View Figures 69–78 ). Sternum quinquangular with few setae (Fig. 75 View Figures 69–78 ). Genital operculum subtriangular with genital papillae protruding (Fig. 75 View Figures 69–78 ). Pectinal teeth count 8/9, fulcra present (Fig. 75 View Figures 69–78 ). Sternites, segments III-VI are smooth and shiny with few setae, segment VII with four smooth carinae of big granules and few setae.

Metasoma: Integument coarse with few setae. Segments II-V longer than wide; segments I-V with respectively 10-8-8-8-7 granular carinae, segments II-IV all dorsal carinae gradually become strongly serrated; segment V carinae with smaller granules dorsally and larger serration ventrally. Vesicle with few setae and granules (Fig. 79 View Figures 79–88 ).

Pedipalps: Integument with smooth granules and few setae, especially the granules are larger on dorsal and external surfaces of chelae. Femur with external, dorsointernal, dorsoexternal, ventrointernal, ventroexternalcarinae granulated, and internal carinae crenulated (Fig. 80 View Figures 79–88 ). Patella with dorsointernal, ventrointernal, ventroexternal, and external carinae with smooth granules; two spinoid granules present on the internal aspect, the ventral internal spinoid granule being much larger than the dorsointernal one (Figs 81-83 View Figures 79–88 ). Trichobothrial pattern C, neobothriotaxic (Vachon, 1974); patella with 17 external trichobothria (5 eb, 2 esb, 2 em, 4 est, 4 et), 9 (right) and 9 (left) ventral trichobothria (Figs 82 View Figures 79–88 , 83 View Figures 79–88 ). Chela very thick, with four ventral trichobothria, all carinae are granular and coalesced except the dorsal secondary, subdigital, dorsal internal, interomedian, and ventromedian carinae vestigial; fingers scalloped, with a pronounced lobe in the movable finger and a corresponding notch in the fixed finger (Figs 89-92 View Figures 89–96 ).

Legs: Integument coarse with few setae except ventral aspects of coxae, trochanters, femurs, and patellae smooth. Trochanter dorsal with few granules and few setae. Femur dorsal with few granules. Patella internally with a dentate carina. Tibiae without spurs (Fig. 96 View Figures 89–96 ). Basitarsus with spurs and two lateral pedal spurs (Fig. 96 View Figures 89–96 ). Tarsus ventrally with a row of spinules (Fig. 96 View Figures 89–96 ). Tarsal ungues curved and hook-like (Fig. 96 View Figures 89–96 ).

Chelicerae (Fig. 71 View Figures 69–78 ): Integument smooth and shiny, dorsal with irregular pattern, ventrally with long hairs. Fixed finger of chelicera with three large triangular teeth on inner margin; ventral of movable finger with six teeth on inner margin, dorsal of movable finger with four teeth on inner margin.

Variation.

Feature figures of adult females are provided (Figs 67 View Figures 65–68 , 68 View Figures 65–68 , 72-74 View Figures 69–78 , 77 View Figures 69–78 , 78 View Figures 69–78 , 84-88 View Figures 79–88 , 93-95 View Figures 89–96 ). Number (left/right) of trichobothria on the ventral surface of the pedipalp patellae: females with 9/9 (n = 2) and 8/9 (n = 1), males with 9/9 (n = 4). Number of pectinal teeth: females with 7/7 (n = 2) and 7/8 (n = 1), males with 8/9 (n = 1), 10/10 (n = 2), and 10/11 (n = 1). Chela with an average length/width ratio of 1.9 in males (n = 4) and 2.4 in females (n = 3), male pedipalp chela fingers stronger curved than females, lobe and corresponding notch reduced in females. Measurements provided in Table 1 View Table 1 . One female specimen (mistakenly identified as S. tibetanus in Di et al. (2013); not examined): body length 45.2 mm, patella with nine ventral trichobothria, pectinal teeth count 7/7.

Habitat.

Found under stones in dry mountain boscage in Shigatse City, ~ 3889 m elevation.

Distribution.

Rikaze City, Xizang, China (Fig. 97 View Figure 97 ).

Remarks.

Scorpiops atomatus is similar to the new species, but can be readily distinguished based on the following combination of characters: (i) the pectinal teeth count 8-11 (with 10-11 (usually 11) in males and eight or nine (usually nine) in females) in S. atomatus , while there are 7-11 (with 8-11 (usually 10) in males and seven or eight (usually seven) in females) in S. lourencoi sp. nov. (ii) length of adults 40-45 mm in S. atomatus , while the length of adults 45-50 mm in S. lourencoi sp. nov. (iii) chela with an average length/width ratio of 2.3 in males (n = 2 adults) and 2.5 in females (n = 3 adults) in S. atomatus , while 1.9 in males (n = 4 adults) and 2.4 in females (n = 3 adults) in S. lourencoi sp. nov. (iv) chela surface with small granules in S. atomatus , while large granules in S. lourencoi sp. nov.