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Faunitaxys
Revue de Faunistique, Taxonomie et Systématique
morphologique et moléculaire
Volume 11 ISSN : 2269 - 6016
Janvier 2023 Dépôt légal : Janvier 2023
Numéro 8
Faunitaxys
Revue de Faunistique, Taxonomie et Systématique
morphologique et moléculaire
ZooBank : http://zoobank.org/79A36B2E-F645-4F9A-AE2B-ED32CE6771CC
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Faunitaxys, 11(8), 2023 : 1 – 8. 1
https://doi.org/10.57800/faunitaxys-11(8)
Two new scorpion species from Central Saudi Arabia (Scorpiones: Buthidae)
ERIC YTHIER (1, *) & WILSON R. LOURENÇO (2)
(1) BYG Taxa, 382 rue des Guillates, 71570 Romanèche-Thorins, France.
– E-mail : contact@bygtaxa.com
– ZooBank : ZooBank: http://zoobank.org/06FD0852-A88E-49E5-B8E6-E1494B86C4E1 – Orcid : https://orcid.org/0000-0002-3194-5184
(2) Muséum national d’Histoire naturelle, Sorbonne Universités, Institut de Systématique, Evolution, Biodiversité (ISYEB),
UMR7205- CNRS, MNHN, UPMC, EPHE, CP 53, 57 rue Cuvier, 75005 Paris, France.
– E-mail : wilson.lourenco@mnhn.fr
– ZooBank : http://zoobank.org/58448BD6-79D7-46CE-AFDD-91EFF2B7D4EF – Orcid : https://orcid.org/0000-0002-2386-363X
* Corresponding author.
Keywords : Abstract. – New buthid scorpions are described from Saudi Arabia, from a site never studied
previously, the Mahazat as-Sayd Reserve, in the centre of the country. Two species are described, based
Scorpion; on one adult male (Compsobuthus mahazat sp. n.) and one adult female (Orthochirus arabicus sp. n.).
Buthidae; The total number of scorpion species currently recognized in Saudi Arabia is now raised to 30.
Compsobuthus; Ythier E. & Lourenço W. R., 2023. – Two new scorpion species from Central Saudi Arabia (Scorpiones:
Orthochirus; Buthidae). Faunitaxys, 11(8): 1 – 8.
taxonomy; DOI: https://doi.org/10.57800/faunitaxys-11(8)
new species;
ZooBank: http://zoobank.org/39005980-DFDC-4DA1-A3F8-32115B288F2B
description;
Saudi Arabia. Received: 21/ 01 / 2023 – Revised: 23/01 /2023 – Accepted: 24 /01 /2023
Introduction outer accessory granules on the pedipalp chela fingers, also
mentioning specimens occurring in Saudi Arabia showed
Since the first attempt by Vachon (1979) to study the entire affinities with the subspecies O. innesi negebensis Shulov &
scorpion fauna of Saudi Arabia, and except the important Amitai, 1960, originally described from Israel. Few years
work of Hendrixson (2006) on Buthid scorpions of the later, Levy & Amitai (1980) placed this subspecies under
country, the scorpion fauna of Saudi Arabia has remained O. scrobiculosus (Brube, 1873), as O. s. negebensis (Shulov &
poorly studied, contrary to those of the surrounding Middle Amitai, 1960), despite the presence of outer accessory granules
Eastern countries. As highlighted by Hendrixson (2006), on the pedipalp chela fingers (absent in O. scrobiculosus),
Saudi Arabia has not been adequately sampled via the restricting then the range of O. innesi to Africa. In Saudi Arabia,
ultraviolet light detection technique and many areas of this Hendrixson (2006) followed the opinion of Vachon (1979) and
large country have never been explored. The Mahazat as-Sayd some later authors, assigning the specimens to O. innesi, but
Reserve, a 220,000 ha fenced protected area in the centre of indicating that this subject would need more attention in the
the country and type locality of the species described in this future. It is now known and well admitted that the Sinai
work, is one of them. In addition, despite recent efforts to Peninsula is a barrier between African and Asian scorpion faunas
clarify the status of several species occurring in Saudi Arabia, and that the geographic distribution of O. innesi is limited to
taxonomic confusion still exists for a number of species, Africa (north of Egypt and possibly the north ranges of Libya,
including those belonging to the genera Compsobuthus Tunisia and Algeria) (Lourenço & Leguin, 2011). It is also now
Vachon, 1949 and Orthochirus Karsch, 1891. established that O. negebensis Shulov & Amitai, 1960 (Israel,
Six Compsobuthus species are currently recognized to occur in Jordan, Sinai) is a valid species (Lourenço, 2007) and that the
Saudi Arabia: C. manzonii (Borelli, 1915), C. arabicus Levy, geographic distribution of O. scrobiculosus is limited to the
Amitai & Shulov, 1973, C. longipalpis Levy, Amitai & Shulov, southwest of Turkmenistan (Kovařík et al., 2020). The new
1973, C. pallidus Hendrixson, 2006, C. setosus Hendrixson, species described in this work, O. arabicus sp. n., collected in
2006 and C. khaybari Abu Afifeh, Aloufi & Al-Saraireh, 2021. the Mahazat as-Sayd Reserve in Central Saudi Arabia, shows
The new species described in this work, C. mahazat sp. n., has affinities with O. negebensis, but can be distinguished from this
been collected from a site not sampled yet (Hendrixson, 2006, species by a number of characters, in addition to presenting a
Alquahtani & Badry, 2021) and can be distinguished from these totally allopatric geographic distribution. It is also probable that
species by a number of characters. some of the Orthochirus populations occurring in Saudi Arabia,
The precise composition of the genus Orthochirus in Saudi notably in the centre of the country, can be assigned to the new
Arabia is uncertain. Vachon (1979) referred the specimens he species described in this work.
examined to O. innesi Simon, 1910, based on the presence of The total number of scorpion species currently recognized in
Saudi Arabia is now raised to 30 (Alquahtani & Badry, 2021;
Alquahtani, 2022; Kovařík & Just, 2022; Kovařík et al., 2022).
Reviewer : Gérard Dupré (France).
This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and
distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
Copyright 2023 The Authors. Faunitaxys published by Lionel Delaunay on behalf of the AFCFF (Association française de Cartographie de la Faune et de la Flore).
2 YTHIER & LOURENÇO. – New scorpions from Central Saudi Arabia
Material and methods in male, female unknown. Metasomal segments I-V with
10-10-10-10-5 carinae; intermediate carinae complete on I-III,
Illustrations were made with the aid of a Wild M5 stereo- incomplete on IV. Telson weakly granular with ventral and latero-
microscope with a drawing tube (camera lucida). ventral carinae; aculeus shorter than vesicle; subaculear tubercle
Measurements were made with the aid of a Motic SMZ-1713 vestigial. Trichobothrial pattern orthobothriotaxic, type A-β (beta).
stereo-microscope with an ocular micrometer. Map was made Femur and patella with moderately to strongly marked carinae.
using Google Maps, maps-forfree.com and Adobe Photoshop Chela slender with fingers moderately elongated, straight (without
software. Measurements follow Stahnke (1970) and are given proximal gap between pedipalp chela fingers when closed). Dentate
in mm. Trichobothrial notations are those of Vachon (1974) and margins on movable and fixed fingers composed of 10-11 almost
morphological terminology mostly follows Vachon (1952) and linear rows of granules; inner accessory granules reduced; outer
Hjelle (1990). Specimens studied herein are deposited in the accessory granules absent (‘acutecarinatus’ group).
MNHN (Muséum national d’Histoire naturelle, Paris, France). Description (based on male holotype, measurements in Table I).
Taxonomic treatment Coloration. – Generally yellowish to pale yellow without any spots.
Prosoma: carapace yellowish; eyes surrounded by black pigment.
Mesosoma yellowish. Metasomal segments yellowish; vesicle yellowish;
Family Buthidae C. L. Koch, 1837 aculeus yellowish at the base and reddish at the tip. Venter and legs pale
Genus Compsobuthus Vachon, 1949 yellow. Chelicerae pale yellow, with teeth pale red. Pedipalps pale yellow
overall; rows of granules on the dentate margins of the fingers pale red.
Compsobuthus mahazat sp. n.
Morphology. – Prosoma: anterior margin of carapace weakly emarginate.
(Fig. 1-7, Tab. I) Carapace carinae moderately developed; anterior median, central median,
ZooBank: http://zoobank.org/4447027F-0ACE-41C4-BEE4-717297D6AB7C posterior median and central lateral moderately marked; posterior median
carinae terminating distally in a small spinoid process that extends beyond the
Holotype, ♂, Saudi Arabia, Central region, Mahazat as-Sayd Reserve posterior margin of the carapace. Intercarinal spaces weakly granular; almost
(22.26931°N 41.83913°E), 250 km E of Taif, on the road between smooth centrally. Median ocular tubercle anterior to the centre of the carapace;
Djeddah and Ryadh, between 900-1100 m a.s.l., III-V/1990 (C. median eyes separated by more than one ocular diameter. Three pairs of lateral
Launay / National Wildlife Research Center), MNHN. eyes. Mesosoma: tergites I-VI tricarinate. Lateral carinae on I-VI strongly
marked; each carina terminating distally with a spinoid process that extends
Etymology. – The specific name is placed in apposition to the generic strongly beyond the posterior margin of tergite. Median carinae on I weak; on II-
name and refers to the Reserve of Mahazat as-Sayd, Saudi Arabia, VI moderate to strong, crenulate; terminating distally on each segment with a
where the new species occurs. spinoid process that extends slightly beyond the posterior margin of the tergite.
Tergite VII pentacarinate, with lateral pairs of carinae moderate to strong;
Diagnosis. – Scorpion of medium size when compared to other median carinae present on proximal one-half, moderate. Intercarinal spaces
known species of the genus in Saudi Arabia, reaching a total length moderately granular. Sternites: lateral carinae absent from sternites III-IV,
of 24 mm. General coloration yellowish to pale yellow without any vestigial on V, weak on VI, moderate, finely crenulate on VII. Submedian
spots; eyes surrounded by black pigment. Carinae on carapace and carinae absent from sternites III-V, vestigial on VI, moderate, finely crenulate on
tergites moderately to strongly developed; granulations moderately VII. Intercarinal spaces smooth, without setae. Pectines: pectinal tooth count
marked. Sternites smooth, without setae. Pectines with 19-19 teeth 19-19. Metasoma: segments I-IV with ten carinae, crenulate; intermediate
1 cm
1 2
Fig. 1 - 2. Compsobuthus mahazat sp. n., ♂ holotype, habitus.
1. Dorsal aspect. 2. Ventral aspect.
Faunitaxys, 11(8), 2023 : 1 – 8. 3
carinae complete on I-III, incomplete on IV. Segment V with five carinae; 5
ventromedian carinae moderate to weak. Dorsal furrows of all segments weakly
developed; intercarinal spaces weakly granular. Telson weakly granular with 6
ventral and latero-ventral carinae; aculeus shorter than the vesicle; subaculear
tubercle vestigial, rhomboid. Chelicerae with two denticles at the base of the
movable finger, partially fused (Vachon, 1963). Pedipalps: trichobothrial pattern
orthobothriotaxic, type A (Vachon, 1974); dorsal trichobothria of femur in β
(beta) configuration (Vachon, 1975). Femur pentacarinate; all carinae
moderately crenulate. Patella with eight carinae; all carinae moderately marked;
dorsointernal carinae with one spinoid granule. Chela slender, with fingers
1 mm
moderately elongated, straight (without proximal gap between pedipalp chela
fingers when closed); all carinae moderately marked. Dentate margins on
movable and fixed fingers composed of 10-11 almost linear rows of granules;
inner accessory granules reduced; outer accessory granules absent. Legs: ventral
aspect of tarsi with two rows of setae. Tibial spurs present on legs III and IV,
moderate. Pedal spurs present, moderate on all legs.
Relationships. – Compsobuthus mahazat sp. n. can be
distinguished from the other species of Compsobuthus 3
occurring in Saudi Arabia, notably by the following characters:
( i ) dentate margins on pedipalp chela movable and
fixed fingers composed of 10-11 rows of granules (7-9
in C. arabicus and 9-10 in C. khaybari and C. setosus),
(ii) outer accessory granules absent on dentate margins of
chela fingers (present in C. khaybari, C. longipalpis and
C. manzonii),
(iii) pectines with 19-19 teeth in male (13-16 in male C.
arabicus),
(iv) chela fingers straight in male, without proximal gap
between pedipalp chela fingers when closed (fingers scalloped 7
in males C. khaybari, C. manzonii and C. pallidus),
(v) sternite VII and ventral surface of metasoma without
setae (numerous setae in C. khaybari and C. setosus).
Genus Orthochirus Karsch, 1891 4
Orthochirus arabicus sp. n.
(Fig. 8-15, Tab. I)
ZooBank: http://zoobank.org/BA992DE2-58CE-474F-811A-641FA7DAF88D Fig. 3-7. Compsobuthus mahazat sp. n., ♂ holotype, trichobothrial
pattern.
Holotype, ♀, Saudi Arabia, Central region, Mahazat as-Sayd Reserve 3- 4. Chela. 3. Dorso-external aspect. 4. Ventral aspect. 5. Femur, dorsal
(22.26931°N 41.83913°E), 250 km E of Taif, on the road between
aspect. 6- 7. Patella. 6. Dorsal aspect. 7. External aspect.
Djeddah and Ryadh, between 900-1100 m a.s.l., III-V/1990 (C.
Launay / National Wildlife Research Center), MNHN.
Etymology. – The specific name refers to Saudi Arabia, where the new segments yellowish brown to reddish brown with darker zones over the
carinae; telson yellowish with brownish variegated pigmentation; aculeus
species occurs. yellowish at the base and reddish at the tip. Venter: sternites yellowish with
Diagnosis. – Scorpion of small size when compared to other known greyish to brownish variegated pigmentation, darker on VI; genital
operculum and pectines yellowish with greyish pigmentation. Chelicerae
species of the genus, reaching a total length of 22 mm. General yellowish with blackish variegated spots covering the entire surface; fingers
coloration yellowish brown with darker variegated pigmentation yellowish with reddish teeth. Pedipalp femur and patella yellowish brown
throughout body and appendages. Anterior margin of carapace almost almost entirely covered with blackish variegated pigmentation; chela
straight. Metasomal segments I-II wider than long, III-V longer than yellowish brown with some brownish pigmentation on manus; fingers pale
wide; ventral aspect of segment V without any granulations. Fixed and yellow; oblique rows of granules on fingers pale red. Legs yellowish brown
movable fingers of pedipalps with 8-9 rows of granules; outer with brownish variegated pigmentation, lighter on distal segments.
accessory granules present next to the seven distal rows. Pectines with Morphology. – Prosoma: carapace with a thin granulation on anterior and
17-17 teeth in female, male unknown. Trichobothriotaxy: A-β (Beta) posterior zones; central zone around ocular tubercle almost smooth; anterior
neobothriotaxy-minorante; trichobothrium d2 absent on femur. margin almost straight. Carinae and furrows weakly marked. Median ocular
Trichobothrium i2 of femur reduced (Vachon, 1974). Chela manus tubercle anterior to the centre of the carapace; median eyes separated by one
with trichobotrium Esb proximal to Esb; fixed finger with and half ocular diameter. Three pairs of lateral eyes. Sternum subtriangular to
trichobotrium dt and et on same level. subpentagonal, longer than wide. Mesosoma: tergites with a thin granulation;
median carina weak to vestigial in all tergites. Tergite VII pentacarinate with
Description (based on female holotype, measurements in Table I). strong carinae. Venter: sternites almost smooth, slightly chagrined, with small
slit-like spiracles; VII with four carinae weakly marked. Genital operculum
Coloration. – Basically yellowish brown with darker variegated divided longitudinally into two sub-oval plates. Pectines: pectinal tooth count
pigmentation throughout body and appendages. Prosoma: carapace 17-17; basal middle lamellae not dilated. Metasomal segments rounded; I-II
yellowish brown with blackish pigmentation anteriorly; median and lateral wider than long, III-V longer than wide. Carinae moderately marked;
eyes surrounded by black pigment. Mesosoma: yellowish brown with dark granulations weakly marked, almost smooth; segments I-II with ten carinae;
brown variegated pigmentation on carinae and granulations. Metasomal segment III with 8 carinae; segments IV-V with dorsal carinae and
punctuations; intercarinal spaces smooth dorsally, weakly granular to almost
4 YTHIER & LOURENÇO. – New scorpions from Central Saudi Arabia
smooth laterally and ventrally; ventral aspect of segment V smooth between punctuations, without
granulations; the distal region along the anal arc slightly chagrined. Telson smooth, with some minor
punctuations; aculeus shorter than the vesicle and moderately curved; subaculear tooth absent. Cheliceral
dentition characteristic of the family Buthidae (Vachon, 1963); movable finger with weakly marked basal
teeth; ventral aspect of both finger and manus with thin setae. Pedipalps: femur with five moderate to strong
carinae, granular; patella with five weakly marked carinae; chela without carinae, smooth. Fixed and
movable fingers with 8-9 rows of granules; outer accessory granules present next to the seven distal rows.
Trichobothriotaxy: A-β; neobothriotaxy ‘minorante’; absence of trichobothria d2 and e1 on femur (Vachon,
1974, 1975); chela manus with trichobotrium Esb proximal to Est; fixed finger with trichobotrium dt and
et on same level. Legs: tarsus with two rows of setae ventrally. Tibial and pedal spurs moderately marked.
Relationships. – Orthochirus arabicus sp. n. can be distinguished from the other Middle
Eastern species of Orthochirus, and in particular from O. negebensis (Fig. 18), which presents
the closest geographic distribution (Israel, Jordan, Sinai), notably by the following characters:
(i) a smaller size (25-40 mm in O. negebensis),
(ii) a paler coloration (black to blackish olive in O. negebensis),
(iii) anterior margin of carapace almost straight (convex in O. negebensis),
(iv) female metasomal segments III-V longer than wide (wider than long in female 8
O. negebensis),
(v) chela manus with trichobotrium Esb proximal to Est (distal in O. negebensis),
(vi) a totally allopatric geographic distribution.
Most of these characters also distinguish the news species from O. innesi (Fig. 19-20), which also
presents a totally allopatric geographic distribution (north of Egypt and possibly the north ranges of
0,5 cm
Libya, Tunisia and Algeria). It is probable that some of the Orthochirus populations occurring in
Saudi Arabia, notably in the centre of the country, can be assigned to O. arabicus sp. n.
NB: during the reviewing process of this manuscript, a new Orthochirus species was
described from Saudi Arabia (Kovařík & Just, 2022), in the Hajrah District, 5 km NW of
At-Tinah (20.1107947°N 40.8434278°E), 1400 m a.s.l. O. katerinae Kovařík & Just, 2022
was described on the basis of 14 males (12 adults and 2 juveniles) and considered to be
related but separate species from O. negebensis. Orthochirus arabicus sp. n. can be
distinguished from this species notably by the following characters:
(i) a smaller size (26-30 mm in O. katerinae),
(ii) a paler coloration (black to reddish black in O. katerinae),
(iii) chela yellowish brown with fingers pale yellow (chela entirely yellow in O. katerinae),
(iv) movable finger of pedipalps with 9 rows of granules (7-8 in O. katerinae),
(v) chela manus with trichobotrium Esb proximal to Est (on same level in O. katerinae),
(vi) chela fixed finger with trichobotrium dt and et on same level (dt between est
and et in O. katerinae),
(vii) an allopatric geographic distribution with the Asir mountain chain as geographic
barrier.
13
12
1 mm
0,5 cm
9
10 15
11
14
Fig. 10- 15. Orthochirus arabicus sp. n., ♀ holotype, trichobothrial pattern. Fig. 8- 9. Orthochirus arabicus sp. n.,
10- 11. Chela. 10. Dorso-external aspect. 11. Ventral aspect. 12- 13. Femur. 12. Dorsal aspect. ♀ holotype, habitus.
13. Internal aspect. 14- 15. Patella. 14. Dorsal aspect. 15. External aspect. 8. Dorsal aspect. 9. Ventral aspect.
Faunitaxys, 11(8), 2023 : 1 – 8. 5 Fig. 16. Satellite map of the Arabian Peninsula showing the type locality of Compsobuthus mahazat sp. n. and Orthochirus arabicus sp. n. in the Mahazat as-Sayd Reserve, Central Saudi Arabia. Fig. 17. Natural habitat of Compsobuthus mahazat sp. n. and Orthochirus arabicus sp. n. in the Mahazat as-Sayd Reserve, Central Saudi Arabia (photo © Jem Babbington / www.birdsofsaudiarabia.com).
6 YTHIER & LOURENÇO. – New scorpions from Central Saudi Arabia
Fig. 18. Orthochirus negebensis Shulov & Amitai, 1960 from Israel, female with pro-juveniles.
Kovařík & Just (2022) considered O. katerinae to correspond to the References
‘Orthochirus innesi Simon 1910, ssp.?’ cited by Vachon (1979) for
the specimens he studied from Saudi Arabia. This statement might Alquahtani A. R. & Badry A., 2021. – A contribution to the scorpion
be somewhat premature and would need further study, considering fauna of Saudi Arabia, with an identification key (Arachnida:
the distribution of the Orthochirus specimens studied by Vachon Scorpiones). Journal of King Saud University - Science, 33: 1-13.
(1979) which were all collected to the east of the Asir mountain Alquahtani A. R., 2022. – The first record of scorpion Nebo
chain, except one specimen from Jeddah (Fig. 21). The Orthochirus yemenensis Francke, 1980 in Saudi Arabia. Arthropoda
populations occurring to the east of the western mountain ranges Selecta, 31 (3): 299- 304.
(Asir and Hijaz), in the interior of the country, might rather
correspond to the new species described here, while O. katerinae Hendrixson B. E., 2006. – Buthid scorpions of Saudi Arabia, with
might be endemic to the west of such mountain ranges. notes on other families (Scorpiones: Buthidae, Liochelidae,
Scorpionidae). Fauna of Arabia, 21: 33-1 20.
Distribution and ecological characteristics of the type Hjelle J. T., 1990. – Anatomy and morphology. Pp. 9-63. In: G. A. Polis
locality (Ed.), The Biology of Scorpions. Stanford Univ. Press. 587 pp.
Both new species were collected in the Mahazat as-Sayd Reserve, in Kovařík F., Fet V. & Yagmur E. A., 2020. – Further review of
Central Saudi Arabia. The Mahazat as-Sayd Reserve is a 220,000 ha Orthochirus Karsch, 1892 (Scorpiones: Buthidae) from Asia:
protected area. The area is totally fenced (second largest fenced Nature taxonomic position of O. melanurus, O. persa, O. scrobiculosus,
Reserve in the world) and protection from livestock grazing has and description of six new species. Euscorpius, 318: 1- 75.
allowed a spectacular recovery of native vegetation. The reserve is
now dominated by grasslands, which are a reminder of what most of Kovařík F. & Just P., 2022. – Orthochirus katerinae sp. n.
the Arabian Peninsula may have looked once. The vegetation cover (Scorpiones: Buthidae) from Saudi Arabia. Euscorpius, 362:1- 9.
consists of short weeds that are interspersed with scattered groups of Kovařík F., Lowe G., St’ahlavsky F. & Just P., 2022. – The genus
Vachellia tortilis (Forssk.) and Maerua spp. Forssk., in addition to Barbaracurus in Saudi Arabia (Scorpiones: Buthidae), with
some other desert plants such as Haloxylon spp. Bunge, Lycium description of a new species. Euscorpius, 365: 1- 26.
shawii Roem. & Schult. and Panicum spp. L. The area is undulating Levy G. & Amitai P., 1980. – Fauna Palaestina. Arachnida 1:
with elevations ranging from about 900 m a.s.l. in wadis and Scorpiones. Jerusalem. The Israel Academy of Sciences and
depressions, to 1100 m a.s.l. on the high ground to the north-west of Humanities. 134 pp.
the reserve. The substrate is mostly sandy soil, including gravels. The
area has a subtropical desert climate with average yearly temperature Lourenço W. R. & Leguin E.-A., 2011. – Further Considerations on
of 34°C and average annual precipitation of 7.5 mm. the Species of the genus Orthochirus Karsch, 1891 from Africa,
with description of three new species (Scorpiones: Buthidae).
Euscorpius, 123: 1- 21.
Faunitaxys, 11(8), 2023 : 1 – 8. 7
1 cm
19 20
Fig. 19- 20. Orthochirus innesi Simon, 1910, ♀ holotype from Egypt, habitus. 19. Dorsal aspect. 20. Ventral aspect.
Fig. 21. Relief map of central western Saudi Arabia showing the localities of studied material of ‘Orthochirus
innesi Simon 1910, ssp.?’ in Vachon, 1979 (squares), the type locality of Orthochirus katerinae Kovařík &
Just, 2022 (circle) and the type locality of Orthochirus arabicus sp. n. (star).
8 YTHIER & LOURENÇO. – New scorpions from Central Saudi Arabia
Table I. Morphometric values (in mm) of the adult types of Compsobuthus mahazat sp. n. and
Orthochirus arabicus sp. n.
Abbreviations: length (L), width (W, corresponding to posterior width in carapace), depth (D).
Compsobuthus mahazat sp. n. Orthochirus arabicus sp. n.
♂ holotype ♀ holotype
Total length (including telson) 24.37 21.75
Carapace (L - W) 2.74 - 2.74 2.19 - 2.74
Mesosoma (L) 7.77 7.24
Metasoma (L) 11.07 10.00
Metasomal segment I (L - W - D) 1.63 - 1.53 - 1.40 1.40 - 1.77 - 1.40
Metasomal segment II (L - W - D) 2.00 - 1.40 - 1.30 1.72 - 1.81 - 1.44
Metasomal segment III (L - W - D) 2.09 - 1.35 - 1.30 1.95 - 1.86 - 1.49
Metasomal segment IV (L - W - D) 2.42 - 1.26 - 1.30 2.37 - 1.91 - 1.49
Metasomal segment V (L - W - D) 2.93 - 1.26 - 1.26 2.56 - 2.37 - 1.40
Telson (L) 2.79 2.32
Vesicle (L - W - D) 1.72 - 0.93 - 0.98 1.30 - 0.93 - 0.74
Aculeus (L) 1.07 1.02
Pedipalp (L) 8.61 7.07
Pedipalp femur (L - W) 2.05 - 0.60 1.81 - 0.56
Pedipal patella (L - W) 2.42 - 0.98 2.19 - 0.79
Pedipal chela (L) 4.14 3.07
Pedipal chela manus (L - W - D) 1.26 - 0.79 - 0.88 1.02 - 0.56 - 0.65
Movable finger (L) 2.88 2.05
Shulov A. & Amitai P., 1960. – Observations sur les scorpions: Vachon M., 1974. – Etude des caractères utilisés pour classer les familles
Orthochirus innesi E. Simon 1910 ssp. negebensis nov. Archives et les genres de Scorpions (Arachnides). 1. La trichobothriotaxie en
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Entomological News, 81: 297- 316. Paris, 3e sér., n°140, Zoologie, 104: 857- 958.
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Pasteur d’Algérie, Alger. 482 pp. des pédipalpes des Scorpions (Arachnides) dans le classement
des genres de la famille des Buthidae Simon. Comptes Rendus
Vachon M., 1963. – De l’utilité, en systématique, d’une nomenclature des Séances de l’Académie de Sciences, 281 (D): 1597- 1599.
des dents des chélicères chez les Scorpions. Bulletin du Muséum
national d’Histoire naturelle, Paris, 2e sér., 35 (2): 161-166. Vachon M., 1979. – Arachnids of Saudi Arabia: Scorpiones. Fauna
of Saudi Arabia, 1: 30- 66.
Résumé
Ythier E. & Lourenço W. R., 2023. – Deux nouvelles espèces de scorpion du centre de l’Arabie Saoudite (Scorpiones: Buthidae). Faunitaxys, 11(8): 1 – 8.
De nouveaux scorpions Buthidae d’Arabie Saoudite sont décrits d’un site non étudié auparavant, la réserve de Mahazat as-Sayd, dans le
centre du pays. Deux espèces sont décrites sur la base d’un mâle adulte (Compsobuthus mahazat sp. n.) et d’une femelle adulte (Orthochirus
arabicus sp. n.). Le nombre total d’espèces de scorpions actuellement reconnues pour l’Arabie Saoudite est porté à 30.
Mots-clés. – Scorpion, Buthidae, Compsobuthus, Orthochirus, taxonomie, nouvelles espèces, description, Arabie Saoudite.Derniers articles publiés
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– Memorie del Museo Civico di Storia Naturale di Verona (Italie)
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– Stuttgarter Beiträge zur Naturkunde A, Biologie (Allemagne)
– Zoosystematica Rossica (Russie)Faunitaxys
Volume 11, Numéro 8, Janvier 2023
SOMMAIRE
Deux nouvelles espèces de scorpion du centre de l’Arabie Saoudite (Scorpiones: Buthidae).
Eric Ythier & Wilson R. Lourenço . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 – 8
CONTENTS
Two new scorpion species from Central Saudi Arabia (Scorpiones: Buthidae).
Eric Ythier & Wilson R. Lourenço . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 – 8
Illustration de la couverture :
Arabian Oryx (Oryx leucoryx (Pallas, 1777)) in the Mahazat as-Sayd
Reserve (photo © Jem Babbington / www.birdsofsaudiarabia.com).
Crédits :
© Eric Ythier & Wilson R. Lourenço : Fig. 1-16, 18, 21.
© Jem Babbington / www.birdsofsaudiarabia.com : Fig. 17 & couverture.
© MNHN : Fig. 19-20.
Publié par l’Association Française de Cartographie de la Faune et de la Flore (AFCFF)You can also read
