Euscorpius sadileki, Kovařík & Šťáhlavský, 2020

Kovařík, František & Šťáhlavský, František, 2020, Five new species of Euscorpius Thorell, 1876 (Scorpiones: Euscorpiidae) from Albania, Greece, North Macedonia, and Serbia, Euscorpius 315, pp. 1-37 : 22-28

publication ID	https://doi.org/ 10.5281/zenodo.4648646
DOI	https://doi.org/10.5281/zenodo.4772913
persistent identifier	https://treatment.plazi.org/id/062F616D-B925-FF89-252F-BAB8FB0A59B4
treatment provided by	Carolina
scientific name	Euscorpius sadileki
status	sp. nov.

Treatment

Euscorpius sadileki View in CoL sp. n.

( Figures 115–149 View Figures 115–118 View Figures 119–125 View Figures 126–133 View Figures 134–140 View Figures 141–148 View Figure 149 , 184 View Figure 184 , 186 View Figures 185–186 , Tables 3–4 View Table 3 View Table 4 )

http: //zoobank. org / urn: lsid: zoobank. org: act: 382FE1BA- 8307-406D-A493-6EC930BAA309

TYPE LOCALITY AND TYPE REPOSITORY. Serbia, Sokobanja, 43.63°N 21.80°E; FKCP GoogleMaps .

TYPE MATERIAL. Serbia, Sokobanja, 43.63°N 21.80°E, 14. GoogleMaps VI.2014, leg. D. SadÍlek, 1♂ 1♀ (holotype and paratype, 543), FKCP; Nišava Province , Gadžin Han env., road between Donji Dušnik and Supotnica, Suva Planina foothills, 43.155ºN 22.118ºE, 5. GoogleMaps VI.2014, 1♀ (paratype), leg. P. ŠÍpek et al., FKCP.

ETYMOLOGY. The species epithet is a patronym honoring David SadÍlek, the collector of holotype of the new species.

DIAGNOSIS (♂ ♀). Total length 26–36 mm. Color reddish black, legs and telson yellow. Pedipalp patellar external trichobothria numbers: 4 eb, 4 eb a, 2 esb, 4 em, 4 est, 6 et, ventral aspect of patella with 8–9 trichobothria. Pectinal teeth number 9 in male, 6–8 in females. Chelicerae yellow, with reticulation. Male with pedipalp fingers type C, female with fingers undulate. Dorsal metasomal carinae on III–IV segments granulated. Dorsolateral metasomal carinae on II–IV segments absent. Ventrolateral metasomal carinae on II–IV segments present and smooth or granulate (mainly in male). Metasoma II–IV densely (roughly) granulated including lateral surface. Metasoma V ventrally granulated with median carina present. Chela length/width ratio, 2.2 in male and 2.4–2.5 in females. Metasoma IV length/ width ratio, 1.68 in male and 1.8 in females. Telson length/ depth ratio, 2.6 in male and 3–3.1 in females.

DESCRIPTION (♀ ♂). Total length about 26–36 mm in both sexes. The habitus is shown in Figs. 115–118 View Figures 115–118 . For position and distribution of trichobothria of pedipalps, see Figs. 141–147 View Figures 141–148 . Sexual dimorphism, see below in the description.

Coloration ( Figs. 115–118 View Figures 115–118 , 149 View Figure 149 ). Base color uniformly reddish black, sternites lighter, yellowish brown, legs and telson yellow. Chelicerae yellow, reticulate.

Carapace and mesosoma ( Figs. 115–122 View Figures 115–118 View Figures 119–125 ). Carapace finely granulated with several smooth areas; carinae are absent. The anterior margin of the carapace is straight. Carapace with two lateral eyes. Tergites finely granulated, without developed carina. Tergite VII lacking lateral and median carinal pairs. Sternites III–VII rather smooth in females and sparsely finely granulated in male, both lacking lateral and median carinae. Stigmata small, narrow ellipical. Pectinal teeth number 9 in male and 6–8 (1 x 6, 1 x 7, 2 x 8) in females, fulcra are present. Pectines have three marginal lamellae and 4–6 middle lamellae.

Metasoma and telson ( Figs. 126–133 View Figures 126–133 ). Metasoma very sparsely hirsute. Metasoma I–V granulated finely in females and roughly in male. Dorsal metasomal carinae on I–V segments distinctively irregularly granulated; dorsolateral carinae absent; ventrolateral carinae present, smooth in females and granulated in male. Metasoma V completely granulated in both sexes with median carina developed, on metasoma I–IV ventral median carina is absent. Anal arch with small pigmented granules. Telson finely granulated, elongate in females and swollen in males, with annular ring present in both sexes. Aculeus short more curved in male.

Pedipalps ( Figs. 134–148 View Figures 134–140 View Figures 141–148 ). Pedipalps very sparsely hirsute. Patella with 24 (4 eb, 4 eb a, 2 esb, 4 em, 4 est, 6 et) external and 8–9 (3 x 8, 1 x 9) ventral trichobothria. Chela with 4 ventral trichobothria, of which V

4 is located on external surface near Eb 1. Female paratype has additional trichobothrium eb a on chela external surface ( Fig. 142 View Figures 141–148 ), which is absent in male holotype. Femur and patella are granulated, femur roughly and patella finely. Femur has granulated developed carinae; ventroexternal carina is incomplete to missing. Patella with 5 complete carinae including irregular wide externomedian. DPS weak to moderate. Manus dorsally with fine, rounded granules, which do not form median carina; only five chelal carinae are developed. Male with pedipalp fingers type C, weakly undulate, similar ar females.

Legs ( Figs. 123–125 View Figures 119–125 ). Both pedal spurs present on all legs, lacking spinelets; tibial spurs absent. Tarsus with single row of spinules on ventral surface, terminating distally with two essentially adjacent spinules.

Measurements. See Table 3 View Table 3 .

AFFINITIES. The combination of four characters (pedipalp patellar external trichobothria numbers: 4 eb, 4 eb a; metasoma IV length/width ratio 1.6–1.8; male with pedipalp fingers type C and female with fingers undulate; and metasoma II– IV densely (roughly) granulated including lateral surface) is unique in the entire genus Euscorpius .

DISTRIBUTION. Serbia ( Fig. 184 View Figure 184 ).