A rare telson anomaly in Parabuthus liosoma (Ehrenberg, 1828) (Scorpiones: Buthidae) Abdulaziz R. Alqahtani & Ahmed Badry June 2021 — No. 336 Euscorpius Occasional Publications in Scorpiology EDITOR: Victor Fet, Marshall University, ‘[email protected]’ ASSOCIATE EDITOR: Michael E. Soleglad, ‘[email protected]’ TECHNICAL EDITOR: František Kovařík, ‘[email protected]’ Euscorpius is the first research publication completely devoted to scorpions (Arachnida: Scorpiones). Euscorpius takes advantage of the rapidly evolving medium of quick online publication, at the same time maintaining high research standards for the burgeoning field of scorpion science (scorpiology). Euscorpius is an expedient and viable medium for the publication of serious papers in scorpiology, including (but not limited to): systematics, evolution, ecology, biogeography, and general biology of scorpions. 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For further details on the new ICZN amendment, see http://www.pensoft.net/journals/zookeys/article/3944/. Publication date: 27 June 2021 http://zoobank.org/urn:lsid:zoobank.org:pub:E0CD517A-2DEB-4219-B140-3224A45628A9 Euscorpius - Occasional Publications in Scorpiology. 2021, No. 336 A rare telson anomaly in Parabuthus liosoma (Ehrenberg, 1828) (Scorpiones: Buthidae) Abdulaziz R. Alqahtani1 & Ahmed Badry2, * 1Department of Biology, College of Science, University of Bisha, P.O. Box 551, Bisha 61922, Saudi Arabia. 2Department of Zoology, Faculty of Science, Al-Azhar University, Nasr City, P.O. Box: 11751, Cairo, Egypt. *Corresponding author: Ahmed Badry, Ph. D., email: [email protected] http://zoobank.org/urn:lsid:zoobank.org:pub:E0CD517A-2DEB-4219-B140-3224A45628A9 Summary A rare anomaly of telson vesicle with two functional aculei is observed and discussed in a Parabuthus liosoma (Ehrenberg, 1828) specimen collected from Jizan, Saudi Arabia. Introduction Parabuthus liosoma (Buthidae) was observed with a rare case of abnormality in the telson. The collected scorpion was first Morphological abnormalities of several arthropod groups morphologically identified according to the diagnostic characters have been described for various body regions. Scorpions provided by Kovařík et al. (2019) and Alqahtani & Badry (2021). are especially vulnerable to abnormalities related to the The specimen was maintained in a plastic container and was duplication of body segments (Teruel, 2004; Jahanifard et al., provided by water and fed by crickets. Then the specimen was 2008). Abnormalities have been reported in many scorpion preserved and deposited at the Al-Azhar University Zoological families: Bothriuridae (Teruel, 2003), Chactidae (González- Collection (AUZC), Nasr City, Cairo, Egypt. The photographs Sponga, 2004), Diplocentridae (Armas, 1977), Euscorpiidae of the habitus of the specimen and the lateral view of telson were (Šarić & Tomić, 201), Hemiscorpiidae (Jahanifard et al., taken with a digital Canon camera (Canon EOS 6D Mark II with 2008), Iuridae (Teruel, 2003), Superstitioniidae (Graham, Canon EF 50mm f/2.5 Compact Macro Lens). 2006), and Vaejovidae (Ayrey, 2011). Various abnormal structures of telson, pedipalp, and pectines have been reported Results in many genera of the family Buthidae, including Androctonus, Alayotityus, Buthus, Centruroides, Hottentotta, Isometrus, In an adult female of P. liosoma collected from Alderb, Leiurus, Lychas, Mesobuthus, Microtityus, Orthochirus, Jizan Region in the southwestern Saudi Arabia, the prosoma, Parabuthus, Rhopalurus, Tityus, and Vachoniolus (Williams, mesosoma and appendages are normal. The metasomal 1971; Karataş & Kürtüllü, 2006; Jahanifard et al., 2008; de segments I–V and the telson are also normal in shape and Sousa et al., 2009; Lowe, 2010; Teruel & Rein 2010; Salabi structure, but the posterior of the metasoma has an anomaly of et al., 2021). The teratology of the telson was previously telson vesicle and aculeus (Figs. 1–2). This anomaly included reported in Hottentotta zagrosensis Kovařík, 1997; Leiurus the presence of two functional, different size aculei in the quinquestriatus (Ehrenberg, 1828); Opisthacanthus elatus telson, dorsal and ventral, 6.3 and 5.1 mm long, respectively (Gervais, 1843); and Tityus serrulatus Lutz & Mello, 1922 (Figs. 2–3). (Shulov & Amitai, 1955; Matthiessen, 1978; Galvis & The evidence of functional aculei was a milky venom Flórez-D., 2016; Salabi et al., 2021). Recently, during a droplet observed on the dorsal aculeus, and a smaller droplet comprehensive review of the personal collection of the first on the ventral aculeus obtained by stimulating the scorpion to author, a teratology case of telson has been detected that due sting defensively as shown in Fig. 3. Also, it was observed that to its rarity deserves to be mentioned, a phenomenon not the scorpion used its venom apparatus to sting the prey with known for this species. several successive stings after successful grasp in different positions. Material and methods Discussion During scorpion collection from Alderb, Jizan Region in the southwestern Saudi Arabia at 17.731245°N 42.262002°E, 221 The observed teratological case in the telson of Parabuthus m a. s. l., 9 October 2020, by the first author, one individual of liosoma is very similar to the abnormal specimens of Hottentotta 2 Euscorpius - 2021, No. 336 Figures 1–3: Parabuthus liosoma, female. Figure 1. Habitus. Figures 2–3: Telson in lateral views; arrow shows dorsal aculeus. Alqahtani & Badry: Anomaly in Parabuthus liosoma 3 zagrosensis, Parabuthus heterurus and Opisthacanthus elatus, ARMAS, L. F., DE 1977. Anomalías en algunos Buthidae de illustrated in Salabi et al. (2021), Kovařík et al. (2016) and Cuba y Brasil. Poeyana, 176: 1–6. Galvis & Flórez-D (2016), respectively. However, the specimen presented here had a double aculeus that was fully functional. AYREY, R. F. 2011. An anomaly of pectinal organs in Vaejovis Galvis & Flórez-D. (2016) refer to the malformations lapidicola (Scorpiones: Vaejovidae). Euscorpius, 130: of structures related to the survivorship of the animal such as 1–6. chelicera, chela manus, or telson as rare in comparison with others. Previous studies of scorpion abnormalities have usually focused BOUCHON, D., T. RIGAUD & P. JUCHAULT. 1998. on the morphological description of individuals collected from the Evidence for widespread Wolbachia infection in natural environment, without any explanations offered (Sissom isopod crustaceans: molecular identification and host & Shelley, 1995; Mattoni et al., 2003; Teruel, 2004; Mattoni feminization. Proceedings of the Royal Society of 2005; Graham, 2006; Karataş & Kürtüllü, 2006; Jahanifard et London. Series B: Biological Sciences, 265(1401): al., 2008; Seiter & Teruel, 2014). In other arthropods, anomalies 1081–1090. and malformations occur due to temperature variations rather than bacterial infections during embryogenesis (Li & Jackson, DE SOUSA, L., A. VÁSQUEZ-SUÁREZ, J. MANZANILLA 1996; Bouchon et al., 1998; Rigaud & Juchault, 1998; Mittmann & T. GREGORIANI. 2009. Alteraciones morfológicas & Wolff, 2012; Hanna & Cobb, 2006). In addition, Williams observadas en el escorpión Tityus quirogae (Scorpiones, (1971) refers to the developmental anomalies that were probably Buthidae) del nordeste de Venezuela. Boletín de la associated to an abnormal midsagittal division of the posterior Sociedad Entomológica Aragonesa, 45: 356–370. embryonic germ band. Duplication of body parts (mesosoma, metasoma, pectines, and aculeus) also could be interpreted as a DI, Z., G. D. EDGECOMBE & P. P. SHARMA. 2018. homeotic mutation (Di et al., 2018; Kovařík et al., 2018; Sharma Homeosis in a scorpion supports a telopodal origin et al., 2014, 2015). of pectines and components of the book lungs. BMC It is interesting to note that this scorpion succeeded in evolutionary biology, 18(1): 1–7. surviving in captivity and has the capacity to hunt prey using its venomous stinger and strong chela. Consequently, this GALVIS, W. & E. FLÓREZ-D. 2016. A new telson teratology specimen may have had no problem with prey capture. Rein in the scorpion Opisthacanthus Peters, 1861 (Scorpiones: (1993) observed that the sting use in two African Parabuthus Hormuridae). Arachnology, 17(3): 157–158. species was related to the prey size and resistance. Although it is fascinating to note here that the female studied is an adult GONZÁLEZ-SPONGA, M. A. 2004. Arácnidos de Venezuela: specimen with teratology in a structure related to prey capture, cincuenta casos de malformaciones en escorpiones it is well-known that this species can kill their prey using their (Chactidae, Buthidae, Diplocentridae, Ischnuridae). strong chela without applying the telson (Simard & Watt, 1990). Memoria de la Fundación La Salle de Ciencias Naturales, On the other hand, the studied female shows a functional dorsal 157: 53–67. aculeus, which might have functioned well when necessary. GRAHAM, M. R. 2006. Malformed pedipalp finger dentition Acknowledgements of the scorpion Superstitionia donensis (Scorpiones: Superstitioniidae). Euscorpius, 42: 1–4. The authors express their gratitude to Prof. Dr. Ersen A. Yağmur, Alaşehir Vocational School, Celal Bayar University HANNA, C. J. & V. A. COBB. 2006. Effect of temperature on (Manisa, Turkey), and Dr. Hamdy Aly, Department of hatching and nest site selection in the Green lynx spider, Zoology, Faculty of Science, Al-Azhar University (Assiut, Peucetia viridans (Araneae: Oxyopidae). Journal of Egypt), for reviewing this article and for providing valuable Thermal Biology, 31(3): 262–267. suggestions. Also, the authors are grateful to Prof. Dr. Victor Fet (Department of Biological Sciences, Marshall University, JAHANIFARD, E., S. H. NAVIDPOUR & B. MASIHIPOUR. USA) and an anonymous reviewer for constructive comments 2008. Pedipalp and venom vesicle anomalies in two on the earlier draft of the manuscript. families of scorpions (Scorpiones: Hemiscorpiidae, Buthidae) from Iran. Pakistan Journal of Biological Sciences, 11: 309–311. References KARATAŞ, A. & M. 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