Jordanius, Afifeh & Yağmur & Al-Saraireh & Amr, 2024

Afifeh, Bassam Abu, Yağmur, Ersen Aydın, Al-Saraireh, Mohammad & Amr, Zuhair, 2024, Revision of the genus Scorpio in Jordan, with a description of a new genus and three new species (Scorpiones: Scorpionidae), Euscorpius 391, pp. 1-66 : 5

Jordanius gen. n.

( Figures 1 , 5–6 , 9–78 , 363-364, 369–370 ) http://zoobank.org/ urn:lsid:zoobank.

org:act: BADFD5DD-EDB4-478D-A26E-445207962048

TYPE SPECIES. Scorpio granulomanus Al-Saraireh, Yağmur, Abu Afifeh & Amr, 2023 (see description below) .

ETYMOLOGY. The generic name is derived from Jordan, the country to which this genus is endemic.

DIAGNOSIS. Medium-sized species. Adult males are about 47.29– 52.46 mm, and females are about 48.13–52.58 mm in length. Anterior margin of carapace bilobed, with 13–17 medium to large setae and a distinct depression. There is a protrusion in the middle of the depression. Carapace acarinate, only the posteriomedian carinae are visible. Carapace shagreened, but the triangular region between median eyes and the anterior margin is smooth in males; smooth and lustrous with small granules laterally in females. The external surface of chela manus densely covered with large, raised, rounded and somewhat pointed granules, the posterior margin of the external surface of chela manus bears very large spinoid protrudings. Internal surface of chela manus with small to moderate pointed granules. Chela manus flattened and elongated; manus length to chela depth ratio almost the same in both sexes (1.24–1.29). Chela fingers are relatively long with small pointed gradually decreased granules anteriorly. Fixed and movable fingers with 4 or 5 strong accessory denticles. Tergites I–VI matt, shagreened in males with scattered small granules; smooth and lustrous with flattened medium granules in females. Metasoma I with 10 carinae, II-IV with 8, and V with 7 carinae. Lateral inframedian carinae on segment I indistinct. Ventral submedian and ventrolateral carinae moderate to strong, with moderate rounded granules, size and numbers of granules decrease from segment I toward segment IV, nearly obsolete on segment IV. Ventromedian and ventrolateral carinae strong with spaced large and pointed granules on segment V, pointed granules gradually increase posteriorly on ventrolateral carina of segment V. Pectinal teeth number 11–13 in males, 9–13 in females. Trichobothriotaxy of type C, orthobothriotaxic (Vachon, 1974), pedipalp chela trichobothrium it placed basally along fixed finger near ib. Tibial spurs absent. Tarsi armed only with prolateral pedal spurs, tarsi of legs I to IV with 5/8–6/8– 7/9–7/10 internal and external spines arranged in series.

AFFINITIES. The new genus Jordanius gen. n. is a fossorial borrowing scorpion belonging to the family Scorpionidae Latreille, 1802 ; this genus is closely related to the genus Scorpio , differing primarily in the shape, elongation, and pattern of granulation of pedipalp chela. The new genus can be separated from the genus Scorpio by having remarkably elongated chela manus, and very large, dense and pointed granules on the dorsoexternal surface of the chela manus, in addition genus Scorpio has generally smooth chela fingers, whereas Jordanius gen. n. has small pointed gradually decreased granules anteriorly on chela fingers.

Figures 1 and 2 show the general difference in elongation and pattern of granulation in chela manus between Jordanius gen. n. and Scorpio .

Figures

Figures 1–2: External view of chela under UV light showing variation in shape, slenderness, and pattern of granulation between Jordanius, gen. n. and Scorpio. Figure 1. Jordanius granulomanus comb. n., female paratype. Figure 2. Scorpio jordanensis sp. n., female paratype. Abbreviations: Manus Length (ML), Chela Depth (CD).

Figures 3–8: In vivo habitus. Figure 3. Scorpio fuscus, male from Bader Al Jadeedah, Balqa Governorate. Figure 4. Scorpio fuscus, female from Birqish Forest, northwestern Jordan, Irbid Governorate. Figure 5. Jordanius maysaraensis gen. et sp. n., female paratype. Figure 6. Jordanius granulomanus comb. n., female paratype. Figure 7. Scorpio wahbehi sp. n., female paratype. Figure 8. Scorpio jordanensis sp. n., male paratype.

Figures 9–12: Jordanius maysaraensis gen. et sp. n., habitus under white light. Figures 9–10. Male holotype, in dorsal (9) and ventral (10) views. Figures 11– 12. Female paratype, in dorsal (11) and ventral (12) views. Scale bar: 10 mm.

Figures 13–20: Jordanius maysaraensis gen. et sp. n., male holotype (13,15,17,19) and female paratype (14,16,18,20). Figures 13–14, 17–18. Carapace and mesosoma. Figures 15–16, 19–20. Coxal and sternopectinal regions and sternites. Figures 13–16 under white light. Figures 17–20 under UV light. Scale bar: 10 mm.

Figures 21–28: Jordanius maysaraensis gen. et sp. n., male holotype (21, 22, 25, 26) and female paratype (23, 24, 27, 28). Figures 21, 23, 25, 27. Carapace and tergites I–III. Figures 22, 24, 26, 28. Coxal and sternopectinal region. Figures 21–24 under white light. Figures 25–28 under UV light.

Figures 29–40. Jordanius maysaraensis gen. et sp. n., male holotype, pedipalp segments under white light (29–34) and under UV light (35–40). Chela ventral (29, 35) and dorsal (30, 36). Movable (31, 37) and fixed (32, 38) fingers dentition. Pedipalp dorsal (33, 39) and ventral (34, 40).

Figures 41–52: Jordanius maysaraensis gen. et sp. n., female paratype, pedipalp segments under white light (41–46) and under UV light (47–52). Chela ventral (41, 47) and dorsal (42, 48). Movable (43, 49) and fixed (44, 50) fingers dentition. Pedipalp dorsal (45, 51) and ventral (46, 52).

Figures 53–58. Jordanius maysaraensis gen. et sp. n., male holotype (53, 55, 57), and female paratype (54, 56, 58). Metasoma and telson under white light, in lateral (53–54), dorsal (55–56), and ventral (57–58) views. Scale bar: 10 mm.

Figures 59–64: Jordanius maysaraensis gen. et sp. n., male holotype (59, 61, 63), and female paratype (60, 62, 64). Metasoma and telson under UV light, in lateral (59–60), dorsal (61–62), and ventral (63–64) views. Scale bar: 10 mm.

Figures 65–72. Jordanius maysaraensis gen. et sp. n., male holotype (65, 66, 69, 70), and female paratype (67, 68, 71, 72). Metasoma V and telson under white light (65–68) and under UV light (69–72), in lateral (65, 67, 69, 71), and ventral (66, 68, 70, 72) views.

Figures 73 –74. Jordanius maysaraensis gen. et sp. n., right legs I–IV, male holotype (73) and female paratype (74).

Figures 75–78: Right pedipalp chelae under UV light in dorsal views. Figures 75–76. Jordanius granulomanus comb. n., male holotype (75), and female paratype (76). Figures 77–78. Jordanius maysaraensis gen. et sp. n., male holotype (77), and female paratype (78).

Figures 359–370: Genital operculum and sternum in males (359–364) and in females (365–370) under UV light. Figure 359, 365. Scorpio wahbehi sp. n. Figure 360, 366. Scorpio fuscus. Figure 361, 367. Scorpio palmatus. Figure 362, 368. Scorpio jordanensis sp. n. Figure 363, 369. Jordanius maysaraensis gen. et sp. n. Figure 364, 370. Jordanius granulomanus comb. n.