Abstract
Telescopus pulcher is an enigmatic colubrid snake only known from the holotype and paratype specimens described from ‘Migiurtinia’ in Puntland (Somalia) in 1935. Herein we recorded the third and fourth-ever known specimens of this species from the Toon village, Woqooyi Galbeed Region, and 15 km southeast of Sheikh, Saahil Region, Somaliland. The species is endemic to Somaliland and adjoining parts of Ethiopia and Puntland. Data on morphology and natural history, as well as the first photographs of live specimens are provided. We also provide a detailed description of the paratype. The coloration of the species resembles that of the vipers of the genus Echis and we hypothesize that T. pulcher mimics these common and sympatric vipers in the Horn of Africa.
References
Anderson, S.C. (1963) Amphibians and Reptiles from Iran. Proceedings of the California Academy of Sciences, Series 4, 31 (16), 417–498.
Baha El Din, S. (2006) A guide to the Reptiles and Amphibians of Egypt. The American University in Cairo Press, Cairo/New York, 359 pp.
Balletto, E. (1968) Contributo alla biogeografia della Somalia. Bollettino dei Musei e degli Istituti Biologici dell´Università di Genova, 36 (248), 191–280.
Blackburn, D.C. & Scali, S. (2014) An Annotated Catalog of the Type Specimens of Amphibia in the Collection of the Museo Civico Di Storia Naturale, Milan, Italy. Herpetological Monographs, 28 (1), 24–45.
https://doi.org/10.1655/HERPETOLOGICA-D-13-00008
Böhme, W. (1977) Further specimens of the rare cat snake, Telescopus rhinopoma (Blanford 1874) (Reptilia, Serpentes, Colubridae). Journal of Herpetology, 11 (2), 201–205.
https://doi.org/10.2307/1563141
Broadley, D.G. (1994) A collection of snakes from eastern Sudan, with the description of a new species of Telescopus Wagler, 1830 (Reptilia: Ophidia). Journal of African Zoology, 108 (2), 201–208.
Brooks, T., Balmford, A., Burgess, N., Fjeldså, J.O.N., Hansen, L.A., Moore, J., Rahbek, C. & Williams, P. (2001) Toward a Blueprint for Conservation in Africa: A new database on the distribution of vertebrate species in a tropical continent allows new insights into priorities for conservation across Africa. AIBS Bulletin, 51 (8), 613–624.
https://doi.org/10.1641/0006-3568(2001)051[0613:TABFCI]2.0.CO;2
Burgess, N., Hales, J.A., Underwood, E., Dinerstein, E., Olson, D., Itoua, I., Schipper, J., Ricketts, T. & Newman, K. (2004) Terrestrial ecoregions of Africa and Madagascar: a conservation assessment. Island Press, Washington, 501 pp.
Capocaccia, L. (1961) Catalogo dei tipi di rettili del Museo Civico di Storia Naturale di Genova. Annali del Museo Civico di Storia Naturale Giacomo Doria Genova, 72, 86–111.
Chippaux, J.P. (2006) Les Serpets d´Afrique occidentale et centrale. IRD editions, Paris, 311 pp.
Crochet, P.A., Rasmussen, J.B., Wilms, T., Geniez, P., Trape, J.-F. & Böhme, W. (2008) Systematic status and correct nomen of the western North African cat snake: Telescopus tripolitanus (Werner, 1909) (Serpentes: Colubridae), with comments on the other taxa in the dhara-obtusus group. Zootaxa, 1703, 25–46.
Disi, A.M., Modry, D., Nečas, P. & Rifai, L. (2001) Amphibians and reptiles of the Hashemite Kingdom of Jordan. Edition Chimaira, Frankfurt am Main, 408 pp.
Doria, G. (2010) Le collezione erpetologica del Museo Civico di Storia Naturale „G.Doria“ di Genova/The herpetological collection of the Museo Civico di Storia Naturale „G. Doria“ of Genoa. In: Mazzotti, S. (Eds.), Le collezioni erpetologiche dei Musei italiani. Censimento e analisi delle collezioni di anfibi e rettili per la loro valorizzazione scientifica. Museologia Scientifica Memorie, 5, pp. 62–68.
Funaioli, U. & Lanza, B. (2015) An outline of the geography of Somalia. In: Lanza, B., Funaioli, U. & Riccucci, M. (Eds.), The Bats of Somalia and Neighbouring Areas. Edition Chimaira, Frankfurt am Main, 566 pp.
Gans, C. (1961) Mimicry in procrypticaly colored snakes of the genus Dasypeltis. Evolution, 15, 72–91.
https://doi.org/10.2307/2405844
Gardner, A.S. (2013) The Amphibians and Reptiles of Oman and UAE. Edition Chimaira, Frankfurt am Main, 480 pp.
Gasperetti, J. (1988) The snakes of Arabia. Fauna of Saudi Arabia, 9, 169–450.
Gillett, J.B. (1941) The plant formations of Western British Somaliland and the Harar province of Abyssinia. Bulletin of Miscellaneous Information, Royal Botanic Gardens, Kew, 2, 37–199.
https://doi.org/10.2307/4102534
Göçmen, B., Nilson, G., Yildiz, M.Z., Arikan, H., Yalçinkaya, D. & Akman, B. (2007) On the Occurrence of the Black Cat Snake, Telescopus nigriceps (Ahl, 1924) (Serpentes: Colubridae) from the Southeastern Anatolia, Turkey with some taxonomical comments. North-Western Journal of Zoology, 3 (2), 81–95.
Grillitsch, H. & Grillitsch, B. (1999) Telescopus fallax Fleichmann, 1831—Europäische Katzennatter. In: Böhme (Hrsg.) Handbuch der Reptilien und Amphibien Europas. Band 3/IIA, Schlangen II. AULA-Verlag GmbH, Wiebelsheim, pp. 756–788.
Haacke, W.D. (2013) Description of a new Tiger Snake (Colubridae, Telescopus) from south-western Africa. Zootaxa, 3737 (3), 280–288.
https://doi.org/10.11646/zootaxa.3737.3.6
Hemming, C.F. (1966) The vegetation of the northern region of the Somali Republic. Proceedings of the Linnaean Society of London, 177, 173–250.
https://doi.org/10.1111/j.1095-8312.1966.tb00958.x
Ilgaz, Ç., Avci, A., Kumlutas, Y., Baran, I. & Özdemir, A. (2007) New locality records extended the distribution of Telescopus nigriceps (Ahl, 1924), Black Headed Cat Snake, in southeastern Anatolia, Turkey. Russian Journal of Herpetology, 14 (3), 207–210.
Kingdon, J. (1989) Island Africa, the evolution of Africa´s rare animals and plants. Princeton University Press, Princeton, New Jersey, 287 pp.
Lanza, B. (1983) A list of the Somali amphibians and reptiles. Monitore Zoologico Italiano Supplemento, Nuova Serie, 18, 193–247.
https://doi.org/10.1080/00269786.1983.11758573
Lanza, B. (1990) Amphibians and reptiles of the Somali Democratic Republic: check list and biogeography. Biogeographia, 14, 407–465.
https://doi.org/10.21426/B614110318
Lanza, B. & Nistri, A. (2005) Somali Boidae (genus Eryx Daudin 1803) and Pythonidae (genus Python Daudin 1803) (Reptilia Serpentes). Tropical Zoology, 18 (1), 67–136.
https://doi.org/10.1080/03946975.2005.10531215
Largen, M.J. (1997) An annotated checklist of the amphibians and reptiles of Eritrea, with keys for their identification. Tropical Zoology, 10, 63–115.
https://doi.org/10.1080/03946975.1997.10539328
Largen, M.J. & Rasmussen, J.B. (1993) Catalogue of the snakes of Ethiopia (Reptilia Serpentes), including identification keys. Tropical Zoology, 6, 313–434.
https://doi.org/10.1080/03946975.1993.10539231
Largen, M. & Spawls S (2006) Lizards of Ethiopia (Reptilia Sauria): an annotated checklist, bibliography, gazetteer and identification key. Tropical Zoology, 19, 21–109.
Largen, M. & Spawls, S. (2010) The Amphibians and Reptiles of Ethiopia and Eritrea. Edition Chimaira, Frankfurt am Main, 687 pp.
Lewin, A., Feldman, A., Bauer, A.M., Belmaker, J., Broadley, D.G., Chirio, L., Itescu, Y., LeBreton, M., Maza, E., Meirte, D., Nagy, Z.T., Novosolov, M., Roll, U., Tallowin, O., Trape, J.-F., Vidan, E. & Meiri, S. (2016) Patterns of species richness, endemism and environmental gradients of African reptiles. Journal of Biogeography, 43 (12), 2380–2390.
https://doi.org/10.1111/jbi.12848
Loveridge, A. (1957) Checklist of the reptiles and amphibians of East Africa (Uganda; Kenya; Tanganyika; Zanzibar). Bulletin of the Museum of Comparative Zoology, 117, 153–362.
Marx, H., Raab, G.B. & Arnold, S.J. (1981) Pythonodipsas and Spalerosophis, Colubrid Snake Genera Convergent to the Vipers. Copeia, 3, 553–561.
https://doi.org/10.2307/1444655
Mazuch, T. (2013) Amphibians and Reptiles of Somaliland and Eastern Ethiopia, based on two field trips in 2010/2011. Tomáš Mazuch, Dříteč, 80 pp.
Mazuch, T., Šmíd, J. & Bauer, A. (2016) Rediscovery and a new record of Hemidactylus laevis (Reptilia: Gekkonidae) from Somaliland, with notes on and resurrection of Hemidactylus fragilis. Zootaxa, 4117, 529–542.
https://doi.org/10.11646/zootaxa.4117.4.5
Mittermeier, R.A., Gil, P.R., Hoffmann, M., Pilgrim, J., Brooks, T., Mittermeier, C.G., Lamoreux, J. & Fonseca, G.A.B. (2004) Hotspots Revisited: Earth’s Biologically Richest and Most Endangered Terrestrial Ecoregions. CEMEX, Mexico City, 392 pp.
Muchiri, P.W. (2007) Climate of Somalia. Technical Report No W-01. FAO-SWALIM, Nairobi, 73 pp.
Nilson, G. & Rastegar-Pouyani, N. (2013) The occurence of Telescopus nigriceps (Ahl, 1924) in western Iran, with comments on the genus Telescopus (Serpentes: Colubridae). Zoology in the Middle East, 59 (2), 131–135.
https://doi.org/10.1080/09397140.2013.810874
Nistri, A. (2010) La collezione erpetologica della sezione di Zoologia “La Specola” del Museo di Storia Naturale dell´Università di Firenze/The herpetology collection of the zoology section “La Specola” of the Museo di Storia Naturale of the University of Florence. In: Mazzotti, S. (Eds.), Le collezioni erpetologiche dei Musei italiani. Censimento e analisi delle collezioni di anfibi e rettili per la loro valorizzazione scientifica. Museologia Scientifica Memorie, 5, pp. 118–128.
Nistri, A. & Vanni, S. (2014) Contribution to the knowledge of Djibouti herpetofauna. In: Capula, M. & Corti, C. (Eds.), Scripta Herpetologica. Studies on Amphibians and Reptiles in honour of Benedetto Lanza. Societas Herpetologica Italica, Latina, pp. 117–128.
Parker, H.W. (1949) The snakes of Somaliland and the Sokotra islands. Zoologische Verhandelingen, 6, 1–115.
Pichi-Sermolli, R.E.G. (1957) Una carta geobotanica dell´Africa orientale (Eritrea, Etiopia, Somalia). Webbia: Journal of Plant Taxonomy and Geography, 13, 15–132.
https://doi.org/10.1080/00837792.1957.10669673
Pitman, C.R.S. (1974) A guide to the snakes of Uganda. Wheldon & Wesley, L., Codicote, 290 pp.
Pook, C.E., Joger, U., Stümpel, N. & Wüster, W. (2009) When continents collide: Phylogeny, historical biogeography and systematics of the medically important viper genus Echis (Squamata: Serpentes: Viperidae). Molecular Phylogenetics and Evolution, 53 (3), 792–807.
https://doi.org/10.1016/j.ympev.2009.08.002
Roll, U., Feldman, A., Novosolov, M., Allison, A., Bauer, A.M., Bernard, R., Böhm, M., Castro-Herrera, F., Chirio, L., Collen, B., Colli, G. R., Dabool, L., Das, I., Doan, T.M., Grismer, L.L., Hoogmoed, M., Itescu, Y., Kraus, F., LeBreton, M., Lewin, A., Martins, M., Maza, E., Meirte, D., Nagy, Z.T., Nogueira, C. de C., Pauwels, O.S.G., Pincheira-Donoso, D., Powney, G.D., Sindaco, R., Tallowin, O.J.S., Torres-Carvajal, O., Trape, J.-F., Vidan, E., Uetz, P., Wagner, P., Wang, Y., Orme, C.D.L., Grenyer, R. & Meiri, S. (2017) The global distribution of tetrapods reveals a need for targeted reptile conservation. Nature Ecology & Evolution, 1, 1677–1682.
https://doi.org/10.1038/s41559-017-0380-7
Scali, S. (2010) Storia e importanza scientifica della collezione erpetologica del Museo Civico di Storia Naturale di Milano/History and scientific importance of the herpetology collection of the Museo Civico di Storia Naturale di Milano. In: Mazzotti, S. (Eds.), Le collezioni erpetologiche dei Musei italiani. Censimento e analisi delle collezioni di anfibi e rettili per la loro valorizzazione scientifica. Museologia Scientifica Memorie, 5, pp. 69–77.
Schleich, H.H., Kästle, W. & Kabisch, K. (1996) Amphibians and Reptiles of North Africa. Koeltz, Koenigstein, 627 pp.
Scortecci, G. (1935) Un nuovo genere e una nuova specie di Colubridi Opisoglifi della penisola dei Somali. Annali del Museo Civico di Storia Naturale Giacomo Doria, 59, 1–5.
Spawls, S., Howell, K., Hinkel, H. & Menegon, M. (2018) A Field Guide to East African Reptiles. Bloomsbury Publishing Plc, London, 624 pp.
Trape, J.-F. & Mané, Y. (2006) Guide des serpents d’Afrique occidentale. Savane et désert. [Senegal, Gambia, Mauritania, Mali, Burkina Faso, Niger]. IRD Editions, Paris, 226 pp.
Valenta, J. (2010) Venomous snakes, Envenoming, Therapy. Nova Science Publishers, Inc., New York, 340 pp.
Wagner, P., Leaché, A., Mazuch, T. & Böhme, W. (2013a) Additions to the lizard diversity of the Horn of Africa: Two new species in the Agama spinosa group. Amphibia, Reptilia, 34, 363–387.
https://doi.org/10.1163/15685381-00002897
Wagner, P., Mazuch, T. & Bauer, A.M. (2013b) An extraordinary tail–integrative review of the agamid genus Xenagama. Journal of Zoological Systematics and Evolutionary Research, 51, 144–164.
https://doi.org/10.1111/jzs.12016
Wallach, V., Williams, K.L. & Boundy, J. (2014) Snakes of the World: A Catalogue of Living and Extinct Species. CRC Press, Boca Raton, 1209 pp.
https://doi.org/10.1201/b16901
Warrell, D.A. & Arnett, C. (1976) The importance of bites by the saw-scaled or carpet viper (Echis carinatus): epidemiological studies in Nigeria and a review of the world literature. Acta Tropica, 33, 307–341.
Werner, Y. (1983) Behavioural triangulation of the head in three boigine snakes: possible cases of mimicry. Israel Journal of Zoology, 32, 205–228.
Werner, Y. (1985) Similarities of the Colubrid Snakes Spalerosophis and Pythonodipsas to vipers: An Additional Hypothesis. Copeia, 1, 266–268.
https://doi.org/10.2307/1444831
Werner, Y.L. (2016) Reptiles Life in the Land of Israel. Edition Chimaira, Frankfurt am Main, 494 pp.
Werner, Y. & Frankenberg, E. (1982) Head triangulation in two colubrine snakes: probable behavioral reinforcement of Batesian mimicry. Israel Journal of Zoology, 31, 137–150.
White, F. (1983) The vegetation of Africa: A descriptive memoir to accompany the UNESCO/AETFAT/UNSO vegetation map of Africa. UNESCO, Paris, 356 pp.