Orthochirus fomichevi, Kovařík & Yağmur & Fet & Hussen, 2019

Kovařík, František, Yağmur, Ersen Aydin, Fet, Victor & Hussen, Fenik Sherzad, 2019, A review of Orthochirus from Turkey, Iraq, and Iran (Khoozestan, Ilam, and Lorestan Provinces), with descriptions of three new species (Scorpiones: Buthidae), Euscorpius 278, pp. 1-31 : 3-7

Orthochirus fomichevi sp. n.

( Figs. 1–31, 155, 163, 170–171, 176, Table 1 )

http://zoobank. org/ urn:lsid:zoobank . org:act: EC46AC45-647F-4BAA-A4F6-5B6FD03C09C8

Orthochirus zagrosensis: Yağmur, 2010: 15–19 , figs. 1–3.

TYPE LOCALITY AND TYPE DEPOSITORY. Iraq, Sulaymaniyah Province, Chaqzhi Khwaroo , 35.626307°N 45.199277°E ; FKCP.

TYPE MATERIAL. Iraq, Sulaymaniyah Province, Chaqzhi Khwaroo , 35.626307°N 45.199277°E, leg. Fenik Sherzad Hussen, 1♂ (holotype) 1♂ 2♀ (paratypes), FKCP; Dohuk Province, S foothill of Chiaje-Spizakho-Dag Mountain Range, Rogarm River valley (left bank), 17 km SE of Zakho City, 37°02'59"N 42°52'05"E, stony maquis shrubland, 560- 600 m a.s.l., 28.IV.2017, leg. A. A. Fomichev, 1♀ (paratype), FKCP. Turkey, Hakkari Province, Çukurca District , 2 km E of Çukurca Town, 37°15'21"N 43°36'46"E, 1269 m a.s.l, 19.V.2010, leg. E. A. Yağmur, 1♀ (paratype), FKCP, 1♀ (paratype), AZMM .

ETYMOLOGY. The species epithet is a patronym honoring Alexander A. Fomichev ( Russia), the collector of a paratype of the new species. His recent advernturous field trip yielded many new reords of arachnids from Iraq ( Fomichev et al., 2018).

DIAGNOSIS. Total length of adults 29–40 mm. Trichobothrium d 2 of pedipalp femur dorsal surface is absent or reduced. Median tibial spurs present on legs III and IV. Pectinal teeth number 21–23 in males and 17–20 in females. Movable and fixed fingers of pedipalps with 8–9 rows of denticles, with internal and external denticles and 5 subterminal denticles. Dorsal carinae on pedipalp patella smooth. Metasoma I with 10 carinae, metasoma II with 8 carinae. Metasoma IV–V ventrally punctate with ventrolateral carinae present; spaces among punctae smooth, without granules. Metasoma II–III ventrally and laterally smooth without granules, punctate and bumpy. Dorsal surface of metasoma I with several granules, metasoma II–IV smooth, and metasoma V mesially finely granulate. Sternite VII granulate, with granulate carinae present. Pedipalp, metasoma and telson very sparsely hirsute, rather glabrous. Tarsomere I of legs with bristlecombs composed of 4–8 bristles. Ratio length/width of metasoma V in males 1.14–1.16.

DESCRIPTION. Total length of adults is 29–40 mm in both sexes. Measurements of the carapace, telson, segments of the metasoma and segments of the pedipalps are given in Table 1 . For habitus see Figs. 1–4.

Coloration ( Figs. 1–4). Carapace, tergites, metasoma and femur of pedipalps and legs are black, tibia and tarsomeres of legs and fingers of pedipalps are yellow. Patella of legs and pedipalps and pedipalp chela can be brown to black. Sternite VII is usually black, other sternites are reddish brown to black obviously with yellow median zone present in posterior margin of sternites III–VI. Telson is black with reddish brown aculeus.

Mesosoma and carapace ( Figs. 5–8). The mesosoma bears a median carina and is densely granulated. The carapace is densely granulated, including the middle of interocular triangle. Only anterior median carinae are developed, which are smooth. The sternite VII is granulated and bears four granulated carinae, other sternites are smooth medially, finely granulated laterally, with a pair of smooth carinae. Pectinal teeth number 21–23 in males and 17–20 in females.

Metasoma and telson ( Figs. 13–18). The metasoma segment I bears 10 granulated carinae. The segments II–V lacks lateral carinae, ventromedian carinae are present on metasoma I–III, ventrolateral carinae are present on all metasomal segments, dorsolateral carina is present on metasoma I–III and reduced to absent on metasoma IV–V. Only metasoma I is granulated laterally; granulation absent on ventral surfaces of all metasomal segments and dorsal surfaces of segments II–IV. Dorsal surface of metasoma I has several granules. Metasoma V is mesially finely granulated. All segments are punctate ventrally and laterally, less so metasoma I. Spaces among punctae are smooth. The entire metasoma and telson are only very sparsely hirsute. The telson is punctate and lacks granules.

Pedipalps ( Figs. 19–30). The distance between trichobothria d 1 and d 3 on the femur of pedipalp approximately equals that between d 3 and d 4; trichobothrium e 1 is situated between d 3 and d 4 or in level with d 4. Trichobothrium d 2 of pedipalp femur dorsal surface is absent or reduced. The femur of pedipalp bears five granulate carinae. The 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 only very sparsely hirsute. The movable fingers bear 8–9 rows of denticles, with external and internal denticles and 5 subterminal denticles.

Legs ( Figs. 9–12) The femur bears four partly granulated carinae, the patella bears five rather smooth carinae, and the tibia is smooth. The patella bears only a few spiniform setae. The tibia bears spiniform setae on the outer side of legs I–II. Tarsomere I of legs I to III bears bristlecombs composed of 4–8 bristles; legs IV lack bristlecombs. Tarsomeres I–II of all legs with two rather irregular rows of spiniform setae.

AFFINITIES. The described features distinguish Orthochirus fomichevi sp. n. from all other species of the genus. Yağmur (2010) misidentified the species as O. zagrosensis , from which O. fomichevi sp. n. differs by granulation present on the dorsal surface of metasoma V. For differentiating O. fomichevi sp. n. from all other Orthochirus species of the region, see the key below.

Tables

Table 1. Comparative measurements of Orthochirus fomichevi sp. n. and O. gantenbeini sp. n. types.Abbreviations: length (L), width (W, in carapace it corresponds to posterior width), depth (D).

		O. fomichevi sp. n.	O. fomichevi sp. n.	O. gantenbeini sp. n.
Dimensions (MM)		♂ holotype	♀ paratype	♂ holotype
Carapace	L / W	4.466 / 5.194	4.795 / 5.864	3.415 / 4.252
Mesosoma	L	9.527	9.886	6.726
Tergite VII	L / W	2.621 / 5.411	2.623 / 6.177	1.935 / 4.421
Metasoma + telson	L	24.526	24.212	ca 18.75
Segment I	L / W / D	2.858 / 3.924 / 3.040	2.857 / 3.866 / 3.441	2.100 / 3.022 / 2.538
Segment II	L / W / D	3.215 / 3.878 / 3.100	3.320 / 3.915 / 3.509	2.511 / 3.087 / 2.723
Segment III	L / W / D	3.721 / 4.069 / 3.199	3.738 / 4.113 / 3.674	2.775 / 3.267 / 2.798
Segment IV	L / W / D	4.782 / 4.312 / 3.392	4.759 / 4.248 / 3.779	3.570 / 3.500 / 2.793
Segment V	L / W / D	4.895 / 4.250 / 3.293	4.972 / 4.204 / 3.429	3.791 / 3.439 / 2.582
Telson	L / W / D	5.055 / 1.957 / 1.583	4.566 / 2.066 / 1.746	- / 1.538 / 1.171
Pedipalp	L	13.695	13.295	10.757
Femur	L / W	3.331 / 1.181	3.408 / 1.308	2.836 / 0.862
Patella	L / W	4.207 / 1.550	4.045 / 1.567	3.349 / 1.133
Chela	L	6.157	5.842	4.572
Manus	W / D	1.193 / 1.141	1.159 / 1.261	0.812 / 0.811
Movable finger	L	3.990	3.809	3.061
Total	L	38.52	38.90	ca 28.90