Orthochirus sejnai, Kovařík & Fet & Yağmur, 2020

Kovařík, FrantIšek, Fet, Victor & Yağmur, Ersen Aydın, 2020, Further review of Orthochirus Karsch, 1892 (Scorpiones: Buthidae) from Asia: taxonomic position of O. melanurus, O. persa, O. scrobiculosus, and description of six new species, Euscorpius 318, pp. 1-73 : 61-64

Orthochirus sejnai sp. n.

( Figures 296–342 , 343 , Table 3) http: //zoobank. org/urn: lsid: zoobank. org: act: BE6A2191-

7507-4691-A609-AFDCB198BD7B

TYPE LOCALITY AND TYPE DEPOSITORY. Iran, Hamadan Province, ca. 2000 m a. s. l., 35 km SE of Hamadan, Gonbad Village , [34°41'10"N 48°44'38"E] ; FKCP.

TYPE MATERIAL EXAMINED. Iran, Hamadan Province, ca. 2000 m a. s. l., 35 km SE of Hamadan, Gonbad Village ,

[34°41'10"N 48°44'38"E], 7–8 May 1996, 1♂ (holotype) 1♀ 1juv. (paratypes), leg. V. Šejna, FKCP .

ETYMOLOGY. The species epithet is a patronym honoring a Czech arachnologist Vladimír Šejna , the collector of types of the new species .

DIAGNOSIS (♂ ♀). Total length of adults 37–39 mm. Pedipalp manus yellow. Femur and patella of legs yellow. Trichobothrium d 2 on dorsal surface of pedipalp femur present. Pectinal teeth number 24 in male and 20 in female. Movable finger of pedipalps with 8–9 rows of denticles, 8–9 ID and OD. Dorsal carinae on pedipalp patella developed and granulated. Pedipalp femur dorsal granulated. Metasoma I with 10 carinae, metasoma II– III with 6 carinae, metasoma IV – V with incomplete dorsolateral and ventrolateral carinae. Ventral carinae of metasoma I– III consist of large granules in one row. Metasoma II – V ventrally and laterally smooth with fine punctation developed laterally and reduced ventrally on metasoma II– III, spaces among punctae smooth with large granules ventrally between median carinae on metasoma II– III; metasoma I ventrally and laterally granulated with punctation reduced. Metasoma V dorsal surface mesially granulated; metasoma I dorsal with more 40, metasoma II with 2–16 large granules. Tergites roughly to finely granulated. Sternite VII granulated, with four granulated carinae present. Pedipalp, metasoma and telson glabrous. Moderate to strong tibial spurs present on legs III and IV. Tarsomere I of legs I– III with 4–6 setae in both sexes. Pedipalp patella length/width ratio 2.96–2.98 in both sexes. Ratio length/width of metasoma V 1.12–1.18 in both sexes .

DESCRIPTION. Total length of adults 37–39 mm in both sexes. Measurements of the carapace, telson, segments of the metasoma and segments of the pedipalps are given in Table 3. For habitus, see Figs. 296–299 .

Coloration ( Figs. 296–299 ). Carapace, tergites, metasoma, and femur or femur and patella of pedipalps and legs reddish black to lack. Patella of pedipalps and legs could be also yellow or yellowish brown. Chela of pedipalps and tarsomeres of legs yellowish brown. Sternites reddish black with yellow median area indicated in posterior margin of sternites III–IV. Telson reddish black.

Mesosoma and carapace ( Figs. 319–322 , 327–330 ). Tergites with a median carina and is roughly to finely granulated. Seventh sternite densely granulated mainly in posterior part with four granulated carinae, the other sternites almost smooh in female and partly granulated with smooth areas mainly in middle and posteriorly in male. Pectine teeth number 24 in male and 20 in female.

Metasoma and telson ( Figs. 331–342 ). Metasoma I with 10, metasoma II–III with 6 granulated carinae. Metasoma II–V lacks lateral and metasoma IV–V ventromedian carinae. Ventrolateral carinae are developed on metasoma I–III and indicated or incomplete on metasoma IV–V, dorsolateral carinae are present on metasoma I–III and indicated on other segments. Ventral carinae of metasoma I–II consist of large granules. Metasoma I granulated laterally, metasoma II–V laterally punctate and smooth; granulation absent on dorsal surfaces of metasoma III–IV; metasoma V dorsal surface mesially granulated; metasoma I dorsal with more 40, metasoma II with 2–16 large granules. Fine punctation on metasoma IV–V ventrally developed, spaces among punctae smooth. Entire metasoma and telson glabrous. Telson smooth with punctation present ventrally and laterally.

Pedipalps ( Figs. 300–318 ). Trichobothrium d 2 on dorsal surface of pedipalp femur present; trichobothrium e 1 is situated between trichobothria d 2 and d 4. Femur of pedipalps with five granulated carinae and is dorsally granulated. Patella has seven smooth carinae, and the chela has smooth carinae which may be discernible throughout the length of the fixed finger. The entire pedipalps are glabrous with several setae only. Movable fingers with 8–9 rows of denticles, 8–9 ID and 8–9 OD.

Legs ( Figs. 323–326 ). Moderate tibial spurs present on legs III and IV. Femur with four partly granulated carinae; patella with five rather smooth carinae; tibia smooth. Patella with only a few setae. Tibia with setae on the outer side of legs I–II. Tarsomere I of legs I–III with 4–6 setae in both sexes, legs IV with 2–4 setae. Tarsomeres I–II internal of all legs with two rather irregular rows of setae.

Measurements. See Table 3.

AFFINITIES. The combination of eight characters (metasoma I laterally granulated or bumpy with punctation reduced; metasoma II–V lateral smooth, without granules, punctation developed; metasoma I dorsal with more than 40 large granules in adults ( Fig. 338 ); tarsomere I of legs with 4–6 long setae; entire metasoma glabrous; pedipalp movable finger with 8–9 ID and 8–9 OD; sternite VII densely granulated; pedipalp patella with dorsal carinae granulated) is unique in the entire genus Orthochirus .

DISTRIBUTION. Iran ( Fig. 343 ). Known only from the type locality .

Figures

Figure 343. Geographic distribution of the Orthochirus spp. found from Turkey to India. An approximate area where the lectotype of O. melanurus was collected is marked by red ellipse.

Figures 296–299: Orthochirus sejnai sp. n. Figures 296–297. Holotype male, dorsal (296) and ventral (297) views. Figures 298–299. Paratype female, dorsal (298) and ventral (299) views. Scale bar: 10 mm.

Figures 300–318: Orthochirus sejnai sp. n., segments of pedipalps. Figures 300–310. Holotype male. Pedipalp chela, dorsal (300), external (301), and ventral (302) views. Pedipalp patella, dorsal (303), external (304), and ventral (305) views. Pedipalp femur and trochanter, dorsal (306), internal (307) and ventral (308) views. Pedipalp chela, movable finger (309) dentate margin. Figures 310–318. Paratype female. Pedipalp chela, dorsal (310), external (311), and ventral (312) views. Pedipalp patella, dorsal (313), external (314), and ventral (315) views. Pedipalp femur and trochanter, dorsal (316) and ventral (317) views. Pedipalp chela, movable finger (318) dentate margin.The trichobothrial pattern is indicated in Figures 300–304, 306–307 (white circles).

Figures 319–326: Orthochirus sejnai sp. n. Figures 319–320, 323–326. Holotype male, carapace and tergites (319), sternopectinal region and sternites (320), and distal segments of right legs I–IV, retrolateral aspect (323–326 respectively). Figures 321–322. Paratype female, carapace and tergites I–IV (321), sternopectinal region and sternites III–VI (322).

Figures 327–328. Orthochirus sejnai sp. n., holotype male, carapace and tergites (327) and sternopectinal region and sternites (328) under UV light.

Figures 329–330. Orthochirus sejnai sp. n., paratype female, carapace and tergites (329) and sternopectinal region and sternites (330) under UV light.

Figures 331–336: Orthochirus sejnai sp. n., metasoma and telson under white light. Figures 331–333. Paratype female, lateral (331), dorsal (332), and ventral (333) views. Figures 334–336. Holotype male, lateral (334), dorsal (335), and ventral (336) views. Scale bar: 10 mm.

Figures 337–342: Orthochirus sejnai sp. n., metasoma and telson under UV light. Figures 337–339. Paratype female, lateral (337), dorsal (338), and ventral (339) views. Figures 340–342. Holotype male, lateral (340), dorsal (341), and ventral (342) views.