Parabuthus, : Pocock, 1895

Kovařík, František, Lowe, Graeme, Elmi, Hassan Sh Abdirahman & Šťáhlavský, František, 2019, Scorpions of the Horn of Africa (Arachnida Scorpiones) Part XXI Parabuthus (Buthidae) (Part II), with description of five new species from Somaliland and Ethiopia, Euscorpius 290, pp. 1-63 : 59

Key to species of Parabuthus in the Horn of Africa

1. All metasomal segments yellow or yellowish brown.. ...... .................................................... P. pallidus Pocock, 1895

– Fourth metasomal segment black ( Figs. 194–199). ......... 2

2. Fifth metasomal segment yellow or yellowish brown, at least on ventral and lateral surfaces ( Figs. 194–199). ... .. 3

– Fifth metasomal segment entirely black ( Figs. 36–43)... 8

3. Manus of pedipalp of male very narrow in both sexes, pedipalp chela length/ width ratio 6.13 in male and 7.23 in female ( Figs. 285–286). ..... P. eritreaensis KovařÍk, 2003

– Manus of pedipalp of male broad, pedipalp chela length/ width ratio 2.90–3.91 in male and 3.90–5.45 in female ( Figs. 266–283) ............................. .... .............................. 4

4. Pedipalp chela length/ width ratio 3.38–3.94 in male. Dorsal surface of metasoma V entirely yellow ( Figs. 232– 237). ..................................... ...... ..................................... 5

– Pedipalp chela length/ width ratio 2.90–3.25 in male. Dorsal surface of metasoma V with dark reticulation or spots laterally ( Figs. 107–113). ......... ...................... ........ 7

5. Telson black ( Fig. 235). Dorsal carina of metasoma IV composed of small blunt granules in male ( Fig. 235)......6

– Telson yellowish brown to orange (fig. 117 in KovařÍk et al., 2016: 35). Dorsal carina of metasoma IV composed posteriorly of strong pointed granules in male (fig. 114 in KovařÍk et al., 2016: 35). ... P. kajibu KovařÍk et al., 2016

6. Pedipalp fingers more elongate, pedipalp chela trichobothrium eb located on fixed finger ( Fig. 91) .. ......... ................................................. P. heterurus Pocock, 1897

– Pedipalp chela trichobothrium eb located at the base of manus ( Fig. 240). ..... ..................... P. somalilandus sp. n.

7. Metasoma III ventrally and laterally almost smooth. Dorsolateral carinae of the third and fourth segments terminate in stronger denticles. Metasoma I–II orange to black, always darker than metasoma III ( Figs. 107–113). ................................................................ P. kabateki sp. n.

– Metasoma III ventrally and laterally densely granulated. Dorsolateral carinae of the third and fourth segments composed of blunt denticles. Metasoma I–II yellow to orange, obviously the same color as metasoma III ( Figs. 194–199). ................. ............ ................ P. robustus sp. n.

8. Manus of pedipalp smooth and very narrow, pedipalp chela length/ width ratio 5.90–7.05 in male ( Figs. 284–289).... 9

– Manus of pedipalp of male broad, pedipalp chela length/ width ratio 2.95–3.30 in male and 4.25–4.90 in female ( Figs. 290–292) ........................ ..... ................................ 10

9. Third metasomal and all pedipalp segments yellow or yellowish brown. (figs. 36–39, 197 in KovařÍk et al., 2016). Male holotype is 83 mm long and has 61–62 pectinal teeth. ................................................ P. cimrmani KovařÍk, 2004

– Third metasomal segment reddish brown to black and all pedipalp segments dark. Fifth metasomal segment entirely black ( Figs. 162–166). Male holotype is 63 mm long and has 36 pectinal teeth. ............. ................ P. mazuchi sp. n.

10. Manus granulated. Fingers of pedipalps of male with a tubercle on inner side of base ( Figs. 290–292). .... ............ ............................................ P. granimanus Pocock, 1895

– Manus smooth. Fingers of pedipalps of male with inner side of base smooth, no trace of tubercle ( Figs. 266–283) ......................................................................................... 11

11. Patella of pedipalp strongly granulated.............................. ........................................... P. hamar KovařÍk et al., 2016

– Patella of pedipalp finely granulated or smooth. …... … 12

12. Pedipalp chela length/ width ratio 4.25–4.40 in female. Metasoma sparsely hirsute and relatively broder, metasoma III length/ width ratio around 1.15 in females ( Figs. 2–4). Base color uniformly yellow to yellowish brown, carapace and tergites dark ( Fig. 1). .... P. abyssinicus Pocock, 1901

– Pedipalp chela length/ width ratio 4.80–4.90 in female. Metasoma densely hirsute and relatively narrower, metasoma III length/ width ratio more than 1.19 in females ( Figs. 5–7). Base color uniformly light yellow, carapace and tergites yellow to yellowish brown ( Fig. 23). …………………......... …………… P. erigavoensis sp. n.