Compsobuthus turieli, Kovařík & Lowe & Stockmann & Šťáhlavský, 2020

Kovařík, František, Lowe, Graeme, Stockmann, Mark & Šťáhlavský, František, 2020, Notes on Compsobuthus: redescription of C. arabicus Levy et al., 1973 from Arabia, and description of two new species from North Africa (Scorpiones: Buthidae), Euscorpius 298, pp. 1-40 : 23-24

publication ID	https://doi.org/ 10.5281/zenodo.5741445
publication LSID	lsid:zoobank.org:pub:15B1EA02-BFD2-43CB-80FD-B8B12BA6C0BC
DOI	https://doi.org/10.5281/zenodo.6546403
persistent identifier	https://treatment.plazi.org/id/3133B07B-FFB8-106B-94B3-A1EC58D2F820
treatment provided by	Felipe
scientific name	Compsobuthus turieli
status	sp. nov.

Treatment

Compsobuthus turieli View in CoL sp. n.

( Figures 110–163 View Figures 110–113 View Figures 114–122 View Figures 123–134 View Figures 135–155 View Figures 156–157 View Figures 158–159 View Figures 160–167 , Table 1 View Table 1 )

http://zoobank.org/urn:lsid:zoobank.org:act:1BCCBD64-

4FB0-45ED-B1E1-0C1A6DC01E50

TYPE LOCALITY AND TYPE DEPOSITORY. Western Sahara, 70 km S of Ad-Dakhla GoogleMaps , 23°04.13'N 016°05.08'W; FKCP.

TYPE MATERIAL EXAMINED. Western Sahara: 70 km S of Ad- Dakhla , 23°04.13'N 016°05.08'W, 7.II.2005, 1♂ (holotype) GoogleMaps 1juv. (paratype), leg. R. et H. Fouquè & S. BečvÁř. GoogleMaps Morocco: At Akka , 29.390083°N 8.268220°W, IX.2013, dry, barely vegetated farmland nr Qued Akka, collected by day under rock left from road construction, 1♀ (paratype), leg. C. Turiel and M. Stockman, FKCP GoogleMaps ; N of Zag , 28.24872°N 09.33291°W ( Fig. 156 View Figures 156–157 ), X.2016, in sandy flats with large black rocks, loose cover of shrubs and solitary trees, collected by day under rocks and UV detection by night sitting on rock, 2♀ 1juv. (paratypes), leg. M. Stockmann, FKCP GoogleMaps .

ETYMOLOGY. It is a pleasure to name this species after Carlos Turiel (Neuss, Germany).

DIAGNOSIS. Total length 29–31 mm. Sexual dimorphism minor, pedipalp fingers straight in females, almost straight in male holotype, male chela slightly more robust, chela L/W ratio: ♂ 5.39, ♀ 5.59; metasomal segment proportions similar in both sexes. Base color uniformly yellow to yellowish brown. Carapace and tergites densely, finely granular. Anterior margin of carapace bearing 8 symmetrically distributed spinules. Pedipalp femur L/ Carapace L ratio: 0.86–0.93. Movable finger of pedipalp chela with 9–11 rows of granules, without external accessory denticles, with 10 internal accessory granules (‘ acutecarinatus ’ group; Levy & Amitai, 1980). Manus of pedipalp chela shorter than fixed finger. Pedipalp chela L/movable finger L ratio: 1.38–1.43. Metasoma I–II with 10 carinae, III with 8–10 carinae, IV with 8 carinae. All metasomal segments longer than wide; metasoma L/W ratios: III 1.85–1.92, IV 2.20–2.27, V 2.50–2.68. Metasoma V W/D ratio: 1.07–1.09. Ventral intercarinal surfaces of metasoma lacking macrosetae. Pectine teeth: ♂ 16, ♀ 13–14. Pectine L/ Metasoma V W ratio: ♂ 2.00, ♀ 1.46. Sternites and metasoma granulated, more strongly in females. Sternites VI–VII with 4 crenulate carinae. Telson rather elongate, aculeus shorter than vesicle. Subaculear tubercle absent.

DESCRIPTION. Total length 29–31 mm in both sexes. The habitus is shown in Figs. 110–113 View Figures 110–113 . Trichobothriotaxy of pedipalps is shown in Figs. 135–142 View Figures 135–155 .

Sexual dimorphism. Sex differences are minor, fingers of pedipalps straight in females and almost straight in the male holotype. No sex differences in proportions of metasomal segments. Female with considerably shorter pectines, smaller pectine teeth and larger genital opercula.

Coloration ( Figs. 110–113 View Figures 110–113 , 157–159 View Figures 156–157 View Figures 158–159 ). The base color is uniformly yellow to yellowish brown. Weak fuscosity may be present on anterior interocular triangle.

Carapace and mesosoma ( Figs. 123–126 View Figures 123–134 ). The entire carapace is covered by granules of different sizes. The carinae are moderately to strongly developed and granular. The anterior margin of the carapace is weakly concave medially, and bears 8 symmetrically distributed spinules (macrosetae). The tergites are strongly granulated. Tergites I–VI are tricarinate, with strong, denticulate median and lateral carinae. Each carina terminates in a spiniform process that in the lateral carinae extends well past the posterior margin of the tergite. Tergite VII is pentacarinate, with lateral pairs of carinae strong, serratocrenulate, and median pairs moderate, crenulate; the median carina is weak and confined to the anterior half of the segment. Pectinal tooth counts: ♂ 16, ♀ 13–14 (3×13, 3×14). The pectine marginal tips extend barely to the posterior margin of sternite III in females, and to half the length of sternite IV in the male. The pectines have 3 marginal lamellae and 7–9 middle lamellae. The lamellae bear numerous dark setae, and each fulcrum bears 2–3 dark setae. All sternites are granulated. The posterior areas of sternites lack a broad glabrous patch. Sternites VI–VII bear 4 crenulate carinae, which are more strongly developed on VII. The other sternites bear one pair of carinae on the medial side of the spiracles.

Metasoma and telson ( Figs. 114–122 View Figures 114–122 ). Metasomal segments I–II with 10 carinae, III with 8–10 carinae, IV with 8 carinae, and V with 5 carinae. Median lateral carinae of metasoma III are indicated by isolated granules that may partially form carinae. All segments sparsely setose and densely granulate, more so in females. Accessory rows of granules are present on dorsal surfaces of segments as well as on the ventral surface of the fifth segment. The telson is rather elongate, with the aculeus a little shorter than the vesicle. A subaculear tubercle is absent.

Pedipalps ( Figs. 135–155 View Figures 135–155 ). The pedipalps are finely granulated and sparsely hirsute. The femur bears 5 carinae, the patella 7 granular carinae, the chela 5–7 carinae. The movable and fixed fingers bear 9–11 rows of granules, without external accessory granules, with 10 internal accessory granules on movable finger, 8–10 on fixed finger. Pedipalp chela L/W ratio: ♂ 5.39, ♀ 5.59. Manus of chela shorter than fixed finger. Pedipalp chela L/movable finger L ratio 1.38–1.43 in both sexes.

Legs ( Figs. 127–134 View Figures 123–134 ). Legs III–IV bear small to moderate tibial spurs. Retrolateral and prolateral pedal spurs are present on all legs. The tarsomeres bear two rows of macrosetae on the ventral surface and several macrosetae on the other surfaces. Bristlecombs are absent. The femur bears 4 carinae, the patella 4–6 carinae. The femur and patella bear only solitary macrosetae and are granulated on prolateral surfaces, smooth on retrolateral surfaces. Tarsal ungues moderately elongated, curved.

Hemispermatophore ( Figs. 160–163 View Figures 160–167 ). Flagelliform, elongate and slender, trunk ca. 7.7 times length of capsule region. Flagellum separated from external lobe, pars recta ca. 60% of trunk length, broad with anterior lamina, pars reflecta long, about the same length as trunk, thick, hyaline. Capsule region with 4 lobes at base of flagellum: posterior lobe longest, triangular, apically rounded, median lobe shortest, apically truncate, anterior lobe acuminate with long thin terminus. Basal lobe strong with broad base and sharp, falcate hook. Left and right hemispermatophores were similar.

Measurements. See Table 1 View Table 1 .

AFFINITIES. The described features distinguish C. turieli sp. n. from all other species of the genus. In the region, the only other known member of the ‘ acutecarinatus group’ is C. berlandi Vachon, 1950 , from Mauritania (type locality: Fort Gouraud, 400 km E of Villa-Cisneros) which is characterized by the presence of 7–8 rows of granules on the pedipalp movable finger, and total length 38 mm (Vachon, 1950). In contrast, C. turieli sp. n. has 9–11 rows of granules on the pedipalp movable finger, and total length <31 mm.

ECOLOGY. Specimens were found under rocks, or on rocks at night, in arid sandy terrain with rather sparse vegetation. Water was available only in an oasis or date plantations, or transiently (a few hours) after a heavy storm. Loamy soil was present but C. turieli sp. n. was only found in sandy areas. Other scorpions observed together with C. turieli sp. n. were: in sandy areas, Androctonus amoreuxi (Audouin,1826) , Buthacus stockmanni KovařÍk, Lowe & ŠťÁhlavský, 2016 and Lissothus occidentalis Vachon, 1950 ; in loamy areas, Buthus mariefranceae Lourenço, 2003 .