Pandiborellius somalilandus ( KovařÍk, 2012 )

Kovařík, František, Lowe, Graeme & Elmi, Hassan Sh Abdirahman, 2020, Scorpions of the Horn of Africa (Arachnida: Scorpiones). Part XXV. Description of Pandinurus awalei sp. n. and the male of Pandiborellius somalilandus (Kovařík, 2012), with remarks on recent synonymies (Scorpionidae: Pandininae), Euscorpius - Occasional Publications in Scorpiology 322, pp. 1-21 : 1-4

Pandiborellius somalilandus ( KovařÍk, 2012)

( Figures 1–22 , 82 , Table 1 )

http: //zoobank. org/urn:lsid:zoobank.org:act:6EF0A4DF-5CAD-47F8-836E-E930217F64F7

Pandinus (Pandinurus) somalilandus KovařÍk, 2012: 9–13 , 17–20, figs. 29–37, 59, 64; Prendini, 2016: 52.

Pandinurus (Pandiborellius) somalilandus: Rossi, 2015: 35 .

Pandiborellius somalilandus: KovařÍk et al., 2017c: 35–39 , figs. 136–137, 192, 396.

TYPE LOCALITY AND TYPE REPOSITORY. Somaliland , 25 km N of Sheikh, 10°02.001'N 45°09.589'E, 763 m a. s. l.; FKCP.

TYPE MATERIAL EXAMINED. Somaliland, 25 km N of Sheikh , 10°02.001'N 45°09.589'E, 763 m a. s. l. (fig. 37 in KovařÍk, 2012: 11), 1♀ (gravid, holotype, figs. 136–137, 192 in KovařÍk et al., 2017c: 35–39, and figs. 29–34, 36, 59 in KovařÍk, 2012: 10–11, 18), XI.2010, leg. T. Mazuch and P. NovÁk, FKCP ; 70 km from Berbera to Hargeisa, 1♀ (paratype), XI.2010, leg. T. Mazuch and P. NovÁk ; near Sheikh, foothills of Goolis Mts. , 09°59.881'N 45°09.762'E, 896 m a. s. l. (fig. 35 in KovařÍk, 2012: 11), 1juvenile (paratype), XI.2010, leg. T. Mazuch, FKCP.

OTHER MATERIAL EXAMINED. Somaliland , between Berbera and Hargeisa, 09°57'48"N 44°42'33"E, 787 m a. s. l. (Locality No. 18SL, Fig. 2 ), 2.IX.2018, 1♀ ( Fig. 1 ), leg. F. KovařÍk and T. Mazuch , FKCP; between Borama and Rugi, 09°57'48"N 43°18'04.1"E, 1339 m a. s. l. (Locality No. 19SL), 7.VII.2019, 1♂ together with exuvia (No. 1754, Figs. 3–22 , Table 1 ), leg. F. KovařÍk and H. Sh A. Elmi , FKCP.

EMENDED DIAGNOSIS (♂♀). Total length 95–110 mm. Color uniformly reddish brown to black, legs yellow. Chelicerae brown, reticulate, with black fingers and anterior margins. Carapace lacking carinae and finely (♀) or coarsely (♂) granulated. External trichobothria on patella number 15 (5 eb, 3–4 esb, 2 em, 1–2 est, 3 et); ventral trichobothria on patella number 41–46; internal trichobothria on chela number 2, ventral trichobothria on chela number 10–11. Pedipalp chela densely hirsute. Pedipalp chela dorsally with evenly-sized conspicuous granules. Dorsoexternal surface of chela with four carinae indicated by rows of granules mainly in females. Chela internally with two longitudinal carinae covered by granules. Chela of male length/ width ratio 1.89. Pectinal teeth number 19–20 in male, 19–23 in females. Dorsal carinae on first through fourth metasomal segments denticulate, usually with smooth (♀) or sharp (♂) denticles. Spiniform formula of tarsomere II = 6-7/5: 6-7/5: 7/5: 7/5. Tarsomere II with 3 spines on inclined anteroventral surface. Length to width ratio of metasoma V of male 2.43.

NOTE. For photos of the female holotype and photos of the type locality see figs. 29–37, 59 in KovařÍk, 2012: 9–13, 17–20.

TAXONOMIC REMARKS. P. somalilandus was based solely on the holotype and paratype females. The male described herein is the first known male belonging to this species. Sexual dimorphism is one of the important characters in the taxonomy of Pandininae .

KovařÍk et al. (2017c) defined three key morphological characters for differentiation of genera Pandiborellius Rossi, 2015 and Pandinurus Fet, 1997 : (1) patella external surface with 3 or 4 trichobothria in est series in Pandinurus ( Fig. 58 and figs. 194–203 in KovařÍk et al., 2017c: 41) vs. 1 or 2 trichobothria in Pandiborellius ( Fig. 16 and figs. 189–193 in KovařÍk et al., 2017c: 41); (2) dentate margin of pedipalp chela fixed and movable fingers with distinct granules in two parallel rows present in anterior half of fingers in Pandinurus ( Figs. 23–24 ) vs. dentate margin of pedipalp chela fixed and movable fingers with distinct granules in a row in Pandiborellius ( Figs. 21–22 ); (3) male with more strongly pronounced lobate tooth on pedipalp movable finger than female in Pandinurus (figs. 144–167 in KovařÍk et al., 2017c: 37) vs. male with usually slightly more pronounced lobate tooth on pedipalp movable finger than female in Pandiborellius (figs. 126–143 in KovařÍk et al., 2017c: 37).

The herein described male of Pandiborelius somalilandus complies with the first two of these key characters for Pandiborellius . However, it possesses a more strongly pronounced tooth on the pedipalp movable finger than female ( Figs. 62–64 ), a character previously used to diagnose Pandinurus . This condition can assist in differentiating P. somalilandus from all other known Pandiborellius species, but it demonstrates that this character cannot be used at the generic level.

Figures

Figure 82. Map showing confirmed distribution of Pandiborelius spp..

Figures 1–2. Pandiborellius somalilandus, female (1) from locality No. 18SL (2) in vivo habitus.

Figures 3–4. Pandiborellius somalilandus, male from locality No. 19SL in dorsal (3) and ventral (4) views.

Figures 5–11. Pandiborellius somalilandus, male from locality No. 19SL, carapace and tergites I–IV (5), coxosternal area and sternites (6), telson (7), left leg IV, retrolateral aspect (8), metasoma and telson in lateral (9), ventral (10), and dorsal (11) views. Scale bar: 10 mm (9–11).

Figures 12–24: Pedipalp segments. Figures 12–22. Pandiborellius somalilandus, male from locality No. 19SL, pedipalp chela dorsal (12), external (13) and ventral (14) views, patella dorsal (15), external (16) and ventral (17) views, femur and trochanter dorsal (18), and ventral (19) views, movable finger dentition under white (20) and UV (21) light and fixed finger (22) dentition under UV light. Trichobothrial pattern indicated in Figures 12–18. Figures 23–24. Pandinurus awalei sp. n., male holotype, movable finger (23) and fixed finger (24) dentition under UV light.

Figures 54–66: Pandinurus awalei sp. n. Figures 54–61, 64–66. Female paratype, pedipalp chela dorsal (54), external (55) and ventral (56) views, patella dorsal (57), external (58) and ventral (59) views, femur and trochanter dorsal (60), and ventral (61) views, movable finger dentition under white light (64); right chelicera dorsal (65) and ventral (66) aspects. Trichobothrial pattern indicated in Figures 54–59. Figures 62–63. Male holotype, movable finger dentition under UV (62) and white (63) light.