Euscorpius simaiakisi, Tropea & Fet & Parmakelis & Stathi, 2022

Tropea, G., Fet, V., Parmakelis, A. & Stathi, I., 2022, Two New Species Of Еuscorpius (Scorpiones, Euscorpiidae) From Skyros And Andros Islands, Greece, Zoodiversity 56 (4), pp. 307-322 : 316-320

Euscorpius simaiakisi sp. n. ( figs 13–24 ; tables 1–4)

urn:lsid:zoobank.org:act:1B99F354-39AE-400C-88F2-92B656943B70

Euscorpius carpathicus: Stathi & Mylonas, 2001: 289 (in part; Andros);

Euscorpius sp. Clade E5: Parmakelis et al., 2013b: 10 (in part; Andros);

Euscorpius cf. kritscheri: Fet et al., 2013: 9 ;

Euscorpius cf. kritscheri DNA clade E5: Fet et al., 2018: 126, 130-131, figs. 1 , 8 .

Type material (9 specimens: 2 {, 7}). Holotype}: Andros Island , Evrousies , dry wall along the stream, east of springs, 590 m, 37°50' N, 24°53' E, 23 April 2011, leg. S. Simaiakis ( NHMC 13221 Eus7). Paratypes. Greece: 2 {: Andros Island , Chora, harbor, 37°50' N, 24°56' E, 9.11.197 8, leg. M. Mylonas ( NHMC 1128 Eus74); 1}: Andros Island , Vitali, 37°55' N, 24°48' E, 3.09.197 9, leg. M. Mylonas, ( NHMC 1134 Eus72); 1}: Andros Island, Menites, dense phrygana, 37°49' N, 24°54' E, 1.05.200 2, leg. S. Simaiakis ( NHMC 4422 Eus73); 1 {imm.: Andros, Vourkoti dirt road to Profitis Ilias peak, W of the village, 730 m, 37°51' N, 24°53' N, 23.04.201 1, leg. S. Simaiakis ( NHMC 13220 Eus5); 1} imm.: Andros, Pitrofos, in yard, 425 m, 37°48' N, 24°52' E, 25.04.201 1 leg. S. Simaiakis, ( NHMC 13239 Eus4); 1 {imm., 1}: Andros Island, Evrousies, dry wall along the stream, east of springs, 590 m, 37°50' N, 24°53' E, 23.04,2011, leg. S. Simaiakis ( NHMC 13221 Eus7) .

Etymology. The species epithet honours Stylianos Simaiakis, who collected most of the specimens of the new species.

G e o g r a p h i c r a n g e. Known only from Andros Island (see map in fig. 26 ).

Diagnosis. A small Euscorpius species, total length around to 24–27 mm. Colour of adults from very light brown-reddish to medium brown, with or without reticulations or marbling on the carapace, mesosoma and metasoma, but never on chelicerae, telson and pedipalps. The number of trichobothria on the pedipalp manus ventral surface is 4 ( V 1-3 +Et 1); trichobothria et and est on fixed finger are located distally to the notch of the fixed finger and dsb is located proximally to the notch. The number of ventral trichobothria on the pedipalp patella usually is Pv = 7; the number of external trichobothria on pedipalp patella usually is: eb = 4, eb a = 4, esb = 2, em = 4, est = 4, et = 5. The pectinal teeth number mostly is 7 in females, and 8 in males. Chela carina V 1 follows a direction toward the external of the trichobothrium Et 1. Dorsal patellar spur ( DPS) well developed. Femur of pedipalp slightly shorter than patella. Carapace usually slightly wider than long in females. Metasomal segment I wider than long in females. Ventrolateral metasomal carinae on segment V present with small, serrulated and widely spaced granules. Ventromedian metasomal carinae on segment V formed by very small, spaced and serrulated granules. Ventral row of tarsus III ending with a decentralized spinule, without forming a “Y” configuration. Average distance from centre of median eyes to the anterior margin of the carapace is 41.86 % of the carapace length in females. Telson usually as wide as high in females.

Description of the female holotype (NHMC 13221 Eus 7)

Colouration. Whole colour is light brown with darker marbling on carapace and mesosoma, with carapace and pedipalps with reddish trend and lighter legs; the telson and the chelicerae are yellow without marbling; sternites, pectines and genital operculum whitish/ivory, the sternites are very light brownish.

Carapace. With a fine and homogeneous granulation on most of surface; anterior edge straight; posterior lateral, anterior median and posterior median furrows are present; two pairs of lateral eyes and a pair of median eyes, situated distally of the middle, are present; distance from centre of median eyes to anterior margin is 41.58% of carapace length.

Mesosoma. Tergites mostly smooth but laterally with a few very little granules; sternites are smooth or very finely punctated. Spiracles small, oval shaped and inclined about 35° downward towards outside.

Metasoma. Dorsal carinae on segments I–IV with very few, low, clear and hardly visible tubercles; ventrolateral carinae on segment I absent, on segment II and IV obsolete or smooth, on segment V present with small, serrulated and widely spaced granules; ventromedian carina on segments I–IV absent, on segment V formed by very small, spaced and serrulated granules; intercarinal spaces smooth. Dorsal furrows weakly marked.

Telson. Slightly wider than high. Vesicle smooth, with ventral setae of different sizes, especially around the vesicle/aculeus juncture.

Pectines. Teeth number 7/7; middle lamellae 4/4; several microsetae on marginal lamellae, middle lamellae and fulcra.

G e n i t a l o p e r c u l u m. The genital operculum is formed by two longitudinally separated subtriangular sclerites.

Sternum. Pentagonal shape, type 2; wider than long, deep posterior emargination.

P e d i p a l p s. Coxa and trochanter with tuberculated carinae. Femur: dorsal and ventral internal carinae tuberculated; dorsal external carinae formed by tubercles slightly serrulated; ventral external carinae irregular, present mostly in the proximal 2/5; external median carinae serrulated; anterior median formed by about 7 or 8 more noticeable conical tubercles, of which three bear a macroseta each; intercarinal spaces from finely to medially granulated. Patella: dorsal and ventral internal carinae tuberculated, the latter slightly serrulated; dorsal external carinae mostly crenulated, with tubercles becoming clearer and more detached, with the more proximal part without them; ventral external carinae formed by low tubercles distally, which gradually become granules proximally; intercarinal surface ventrally and externally smooth, dorsally with just a few granules, and internally finely granulated. Dorsal patellar spur well-developed. Chela: carina D1 is distinctly strong, dark and from smooth a slightly crenulated; D4 formed by dark and low tubercles; V1 is distinctly strong, dark and from tuberculated proximally to slightly crenulated, forming a weakly pronounced “Y” configuration; V3 is rounded, slightly darker than the adjacent area, with a few small and scattered granules; intercarinal internal tegument granulated, the remaining parts are mostly smooth; notch and lobe on fixed and movable fingers are barely notable; finger dentition: a DD is present in the distalmost part on the tip; MD is formed by very small denticles closely spaced forming a more or less straight line, discontinued at level of the OD; fixed finger has 7/7 OD and 10/11 ID; movable finger has 8/8 OD and 15/13 ID.

T r i c h o b o t h r i a. Chela: trichobothria on the pedipalp manus ventral surface V = 3/3 (V 1-3) + Et 1 = 1/1; the trichobothrium V 4 is situated on the external surface very near to the carina V 1; the trichobothria et and est are located distally to the notch, and the trichobothrium dsb is located just proximal to the middle of the notch; et-est / est-dsb ratio is about 1.17/1.08. Patella: ventral (Pv): 7/7; patella external (Pe): et = 5/5, est = 4/4, em = 4/4, esb = 2/2, eb a = 3/4, eb = 4 / 4. Femur: trichobothrium d on femur is proximal to i, while the trichobothrium e is distal to both, situated on dorsal external carina.

Legs. Legs with two pedal spurs; no tarsal spur; ventral row of tarsus III with a total of 9/9 spinules of increasing size from proximal to distal, ending with a decentralized spinule, without forming a “Y” configuration; 3 larger flanking pairs of tarsal setae adjacent to the ventral spinules row are present. Tubercles present on ventral and dorsal surface of all leg femora, they are more marked and dark ventrally, but on the fourth pair the tubercles are ventrally few, and less evident.

C h e l i c e r a e. Typical of the subfamily Euscorpiinae .

T r i c h o b o t h r i a l a n d p e c t i n a l t e e t h c o u n t v a r i a t i o n. Pectinal teeth in males (n = 4): 8/8 (2); in total, 8 in 100 % (4); mean = 8, SD = 0.

Pectinal teeth in females (n = 14): 7/6 (1), 7/7 (5), 8/8 (1); in total, 6 in 7.14 % (1), 7 in 78.57 % (11), and 8 in 14.29 % (2); mean = 7.07, SD = 0.47.

Pedipalp patella trichobothria Pv (n = 18): 7/6 (1), 7/7 (7), 7/8 (1); in total, 6 in 5.55 % (1), 7 in 88.89 % (16) and 8 in 5.55 % (1); mean =7, SD = 0.34.

Pedipalp patella trichobothria Pe (n = 18): et = 5/5 (9); in total, 5 in 100 % (18); mean = 5, SD = 0; est = 4/3 (1), 4/4 (8); em = 3/3 (1), 4/4 (7); esb = 2/2 (9); eb a = 3/4 (1), 4/4 (8); eb = 4/4 (9).

Figures

Figs 13–14. Dorsal and ventral views of Euscorpius simaiakisi sp. n. female holotype.

Figs 15–24.Euscorpius simaiakisi sp. n. female holotype: 15 — carapace; 16 — external view of chela; 17 — dorsal view of pedipalp patella; 18 — ventral view of pedipalp patella; 19 — external view of pedipalp patella; 20 — ventral view of chela; 21 — dorsal view of chela; 22 — telson; 23 — ventral view of the metasomal segment V; 24 — lateral view of the metasomal segment V.

Figs 1–2. Dorsal and ventral views of Euscorpius triantisi sp. n. female holotype.

Figs 3–12.Euscorpius triantisi sp. n. female holotype: 3 — carapace; 4 — external view of chela; 5 — dorsal view of pedipalp patella; 6 — ventral view of pedipalp patella; 7 — external view of pedipalp patella; 8 — dorsal view of chela; 9 — ventral view of chela; 10 — telson; 11 — ventral view of the metasomal segment V; 12 — lateral view of the metasomal segment V.

Fig. 26. Map indicating localities of the examined specimens of two new species (red squares, E. triantisi sp. n.; green circles, E. simaiakisi sp. n.; black dot marks type locality).