Orthochirus Karsch, 1892

Kovařík, FrantIšek & Just, Pavel, 2022, Orthochirus katerinae sp. n. (Scorpiones: Buthidae) from Saudi Arabia, Euscorpius (Oxford, England) 362 (1), pp. 1-9 : 1

Orthochirus Karsch, 1892

(Figures 1–27, Table 1 ) http: //zoobank. org/urn: lsId: zoobank. org: act: 79D5A7E7-F 14F -4D64-90ED -89BF47023562

Orthochirus Karsch, 1892: 306 ; Kovařík et al., 2020: 1–73 , figs. 1–352, tables 1–4 (complete reference and synonyms list until 2020).

DIAGNOSIS. Total length of adults 22–55 mm. Tergites I–VI with weak median or lateral carinae, or carinae indistinct. Patellar trichobothrium d 3 located between dorsomedian and dorsointernal carinae. Dorsal trichobothria of femur arranged in beta-configuration. Trichobothrium d 2 of pedipalp femur absent or present on dorsal surface. Chelicerae with typical buthid dentition ( Vachon, 1963), ventral aspect of fiXed finger with two denticles. Tibial spurs present on legs III and IV; in all legs, mid-ventral aspect of tarsomere II sparsely setose with 1 or 2 rows of short spiniform setae. Pectines with fulcra, densely hirsute. ProXimal dentate margins of pedipalp fingers not strongly undulate; movable fingers of pedipalps with 7–10 rows of denticles and 2–5 subterminal denticles. Carapace strongly trapezoidal, lacking distinct carinae; in lateral view distinctly inclined downward from median eyes to anterior margin; 5 pairs of lateral eyes. First and second metasomal segments with carinae. Metasoma posteriorly widened; metasomal segments IV and V ventrally punctate. Telson elongate with subaculear tubercle absent, aculeus robust, as long as or longer than vesicle; hemispermatophore capsule with 3 laminate lobes + 1 hook-like basal lobe; spiracles slit-like.