Revision of the Mesobuthus caucasicus complex from Central Asia with descriptions of six new species (Scorpiones Buthidae) Author Fet, Victor Author Kovařík, František Author Gantenbein, Benjamin Author Kaiser, Ronald C. Author Stewart, Alexander K. Author Graham, Matthew R. text Euscorpius 2018 255 1 77 journal article 1536-9307 4CA607BB-61E6-4DDD-837D-7F7E45ACCCF4 Mesobuthus kaznakovi (Birula, 1904) , stat . n . ( Figs. 119–151 , 269 , 279 , 294–295 , 309 , 316–317 , Tables 4–6 ) Buthus kaznakovi Birula, 1904b: 32 . TYPE LOCALITY AND TYPE REPOSITORY . Tajikistan , Khatlon Province , road from Sarypul’ to Talbar ; ZISP . REFERENCES (selected); see Fet (1989) and Fet & Lowe (2000) for a full list before 1998: Buthus caucasicus kaznakovi : Birula, 1911: 167 ; Birula, 1917: 71. Mesobuthus caucasicus kaznakovi : Vachon, 1958: 150; Fet, 1989: 112 . Olivierus caucasicus kaznakovi : Fet & Lowe, 2000: 191 . TYPE MATERIAL . Syntypes : Tajikistan , Khatlon Province , road from Sarypul’ to Talbar , [ 38.42°N 70.13°E to Figures 123–130: Mesobuthus kaznakovi . Figures 123 , 125 , 127–130 . Male from Ramit, Tajikistan, chelicerae, carapace and tergites I–III (123), sternopectinal region and sternites III–V (125), left legs I–IV, retrolateral aspect (127–130). Figures 124 , 126 : Paratype female, chelicerae, carapace and tergites I–III (124), and sternopectinal region and sternites III–IV (126). 38.60°N 70.35°E ] 28–29 May 1897 ( Old Style ), leg. A. N. Kaznakov , 1♀ ( ZISP 1252 ) ; Tavildara District : Chil’dara (on Obi-Khingou River ) , 38.78°N 70.30°E , leg. A. N. Kaznakov , 30 May and 17 June 1897 ( Old Style ), 1♀ ( ZISP 1254 ) ; Karasu River (tributary of Amudarya ), leg. A. N. Kaznakov , 1–3 May 1897 ( Old Style ), 2 ♀ (not found in ZISP ) . Shugnan , Shakhdara River valley , August 1897 , leg. A. N. Kaznakov , “numerous ♀ , ♂ , and pulli” (not found in ZISP ) . MATERIAL STUDIED . Tajikistan , Khatlon Province , Ramit Nature Reserve (zapovednik), Sardai-Miena River valley , 38.78°N 69.35°E , 27 June 1962 , 1♂ 1♀ ( Figs. 119–151 , 269 , 279 , 294–295 , 309 , 317 ) ( FKCP ) . Uzbekistan , Jizzakh Province , a Turkmen village near Zaamin , 39.61°N 68.50°E , November 2010 , 2♂ 3♀ 2juvs. ( Fig. 316 ) ( FKCP ) . DISTRIBUTION. Tajikistan , Uzbekistan ( Figs. 328 , A 7 ). DIAGNOSIS. ( based on studied material ) Total length of adult males 68–70 mm , 68– 75 females . Trichobothrium db on fixed finger of pedipalp situated between trichobothria est and esb , near to est . Male with fingers proximally little more twisted than female. Female has longer and narrower chela of pedipalps. Pedipalp chela length/ width ratio 3.50–3.65 in males and 3.81–3.93 in females. Pectinal teeth number 25–27 in males, 19–23 in females. Chelicerae yellow, without reticulation. Pedipalps and metasoma sparsely hirsute. Carapace and tergites yellowish brown, black pigmented; metasoma, telson, pedipalps and legs yellowish brown, only anterior part of metasomal segment V black. Femur of pedipalp with 4–5 granulated carinae. Patella with 8 granulated or smooth carinae. Chela lacks carinae. Movable fingers of pedipalps with 13 cutting rows of denticles and 5 terminal denticles. Seventh sternite bears 4 well marked granulate carinae. First metasomal segment with 10 carinae; second to third with 8 carinae, other two carinae indicated by incomplete row of denticles; fourth with 8 carinae; fifth with 5 carinae. All carinae granulated, dorsal carinae bear slightly larger terminal denticles. Length to width ratio of fourth metasomal segment 1.71–1.79 in males, 1.69–1.71 in females. Telotarsus III ventral setation represented by short and strong spiniform setae. Pedal spur of legs obviously with solitary setae only. Figures 131–138: Mesobuthus kaznakovi . Figures 131 , 133–135 . Male from Ramit, Tajikistan, metasoma V and telson lateral (131), and metasoma and telson, lateral (133), ventral (134), and dorsal (135) views. Figures 132 , 136–138 . Female from Ramit, Tajikistan, metasoma V and telson lateral (132), and metasoma and telson, lateral (136), ventral (137), and dorsal (138) views. REDESCRIPTION. The total length of adult males 68–70 mm , 68– 75 females . Trichobothrium db on fixed finger of pedipalp is situated between trichobothria est and esb , near to est . Male has the fingers proximally a little more twisted than female. Female has longer and slightly narrower chela of pedipalps. Chelicerae yellow, without reticulation, the tips of teeth on cheliceral fingers are black. For the position and distribution of trichobothria see Figs. 142–146, 148–149 . For measurements see tables 4–5. COLORATION ( Figs. 119–122 ). The carapace and tergites are yellowish brown strongly black pigmented; the metasoma, telson, pedipalps and legs yellowish brown to black. Metasomal segment V is black mainly in anterior part. MESOSOMA AND CARAPACE ( Figs. 123–126 ). The carapace is carinated and unevenly covered by granules of varying size; much of the granulation is fine, but some granules are larger and distinctly rounded. Tergites I–VI bear three carinae and are granulated, with some intercarinal granules small and others larger and rounded. Tergite VII is pentacarinate. The pectinal tooth count is 25–27 in males, 19–23 in females. The pectinal marginal tips extend to about third of the fifth sternite in males and third of the fourth sternite in females. The pectines have three marginal lamellae and seven to nine middle lamellae. The lamellae bear numerous long setae, each fulcrum with three to five setae. All sternites are smooth and sparsely hirsute. The seventh sternite bears four well marked granulate carinae. The other sternites bear two furrows. PEDIPALPS ( Figs. 139–149 ). The pedipalps are sparsely hirsute and smooth. The femur bears four to five granulated carinae, the middle carina on internal surface could be incomplete indicated by several strong granules. The patella bears eight carinae from which three internal are granulated and other are smooth in males but could by granulated in females. The chela is without carinae. The movable fingers of pedipalps bear 13 cutting rows of denticles, every with external and internal denticles present, and five terminal denticles. LEGS ( Figs. 127–130 ). The tarsomeres bear two rows of spiniform setae on the ventral surface and numerous macrosetae on the other surfaces. Ventral setation of tarsomere II (telotarsus) represented by short and strong spiniform setae. Pedal spur of legs obviously with solitary setae only. Femur bears only several macrosetae. Femur and patella with carinae well developed. Tibial spurs present and long on third and fourth legs and absent in the other legs. METASOMA AND TELSON ( Figs. 131–138 ). All metasomal segments are only very sparsely hirsute. The metasomal segment I with 10 carinae, II–III with 8 carinae but other two lateromedian carinae are indicated by incomplete row of denticles, IV with 8 carinae, and V with 5 carinae. All carinae with denticles, dorsal carinae on metasomal segment I–III bear slightly larger terminal denticles. The dorsal surface of all segments is smooth in the middle and bumpy on margins. Other surfaces are bumpy with several solitary granules. Ventrolateral carinae of metasomal segment V posteriorly with several large lobate denticles. The telson is only sparsely hirsute, rather elongate, bumpy and smooth. NOTES. Fet (1989) did not list syntypes from Karasu and Shugnan, which could not be located in ZISP.