Abstract
Ethiopia is known for its highly endemic and rich herpetofaunal diversity shaped by its biogeographical patterns. Here, a new species of skink, Trachylepis boehmei sp. nov., is described from the Ethiopian Highlands. It differs from its congeners in having smooth uncarinated dorsal scales, 26–29 scale rows around midbody, a slender body of small size, a relatively short tail, a low eye–snout distance and a unique colour pattern with 6–8 darkish brown dorsal stripes. Based on morphological characteristics, its biogeographical pattern and comparisons with other similar congeners this new species is closely related to Trachylepis megalura. A published new record of Trachylepis wingati for the Kafa region is re-examined and identified as T. megalura. An updated comprehensive key to the Trachylepis found in Ethiopia is provided. In the context of ongoing phylogenetic and taxonomic revisions of Trachylepis and its species complexes the presence of further cryptic taxa can be expected also for the Ethiopian biodiversity hotspots. Consequently, the need of further herpetological investigations in this region of ecological importance is stressed.
References
Allen, K.E., Tapondjou N., W.P., Greenbaum, E., Welton, L.J. & Bauer, A.M. (2019) High levels of hidden phylogenetic structure within Central and West African Trachylepis skinks. Salamandra, 55 (4), 231–241.
Allen, K.E., Tapondjou N., W.P., Welton, L.J. & Bauer, A.M. (2017) A new species of Trachylepis (Squamata: Scincidae) from Central Africa and a key to the Trachylepis of West and Central Africa. Zootaxa 4268 (2), 255–269.
https://doi.org/10.11646/zootaxa.4268.2.5
Bauer, A.M. (2003) On the identity of Lacerta punctata Linnaeus 1758, the type species of the genus Euprepis Wagler 1830, and the generic assignment of Afro–Malagasy skinks. African Journal of Herpetology, 52 (1), 1–7.
https://doi.org/10.1080/21564574.2003.9635472
Ceríaco, L.M.P., Marques, M.P. & Bauer, A.M. (2016) A review of the genus Trachylepis (Sauria: Scincidae) from the Gulf of Guinea, with descriptions of two new species in the Trachylepis maculilabris (Gray, 1845) species complex. Zootaxa, 4109 (3), 284–314.
https://doi.org/10.11646/zootaxa.4109.3.2
Colston, T.J., Pyron, R.A. & Bauer, A.M. (2020) A new species of African Snake-Eyed Skink (Scincidae: Panaspis) from Ethiopia. Zootaxa, 4779 (2), 190–200.
https://doi.org/10.11646/zootaxa.4779.2.2
Dessalegn, A., Balakrishnan, M. & Wube, T. (2018) Flock size, diet composition, and habitat characteristics of the Ethiopian endemic Ankober Serin Crithagra ankoberensis. Scopus: Journal of East African Ornithology, 38 (1), 6–15.
de Witte, G.-F. (1953) Exploration du Parc National de l’Upemba. Vol. 6. Reptiles. Institut des Parcs Nationaux du Congo Belge, Brussels, 322 pp.
Fisaha, G., Hundera, K. & Dalle, G. (2013) Woody plants' diversity, structural analysis and regeneration status of Wof Washa natural forest, North–east Ethiopia. African Journal of Ecology, 51 (4), 599–608.
https://doi.org/10.1111/aje.12071
Freilich, X., Anadón, J.D., Bukala, J., Calderon, O., Chakraborty, R. & Boissinot, S. (2016) Comparative Phylogeography of Ethiopian anurans: impact of the Great Rift Valley and Pleistocene climate change. BMC evolutionary biology, 16 (1), 206.
https://doi.org/10.1186/s12862-016-0774-1
Goshme, B. & Yihune, M. (2018) Population structure and habitat use of gelada baboon (Theropithecus gelada) in Wof-Washa Forest (Gosh-Meda Area), Central Ethiopia. Journal of Ecology and Environment, 42 (1), 35.
https://doi.org/10.1186/s41610-018-0098-8
Gower, D.J., Wade, E.O., Spawls, S., Böhme, W., Buechley, E.R., Sykes, D. & Colston, T.J. (2016) A new large species of Bitis Gray, 1842 (Serpentes: Viperidae) from the Bale Mountains of Ethiopia. Zootaxa, 4093 (1), 41–63.
https://doi.org/10.11646/zootaxa.4093.1.3
Kirschey, T. (2017) Herpetofauna (Amphibia, Reptilia) at the Kafa Biosphere Reserve. In: The Nature and Biodiversity Conservation Union (NABU) (Ed.), NABU’s Biodiversity Assessment at the Kafa Biosphere Reserve. Addis Ababa, Berlin, pp. 190–205.
Koppetsch, T. (2020) First record of the high-altitude skink Trachylepis irregularis (Lönnberg, 1922) (Squamata: Scincidae) from South Sudan. [in preparation]
Koppetsch, T., Nečas, P. & Wipfler, B. (2020) A new chameleon of the Trioceros affinis species complex (Squamata: Chamaeleonidae) from Ethiopia. [in preparation]
Largen, M.J. & Spawls, S. (2006) Lizards of Ethiopia (Reptilia Sauria): an annotated checklist, bibliography, gazetteer and identification. Tropical Zoology, 19 (1), 21–109.
Largen, M.J. & Spawls, S. (2010) Amphibians and Reptiles of Ethiopia and Eritrea. Edition Chimaira, Frankfurt, 694 pp.
Loveridge, A. (1923) Notes on East African lizards collected 1920-1923 with the description of two new races of Agama lionotus. Proceedings of the Zoological Society of London, 1923, 935–969.
https://doi.org/10.1111/j.1096-3642.1923.tb02215.x
Lulekal, E., Asfaw, Z., Kelbessa, E. & Van Damme, P. (2014) Ethnoveterinary plants of Ankober District, North Shewa Zone, Amhara Region, Ethiopia. Journal of Ethnobiology and Ethnomedicine, 10 (1), 21.
https://doi.org/10.1186/1746-4269-10-21
Mairal, M., Sanmartín, I., Herrero, A., Pokorny, L., Vargas, P., Aldasoro, J.J. & Alarcón, M. (2017) Geographic barriers and Pleistocene climate change shaped patterns of genetic variation in the Eastern Afromontane biodiversity hotspot. Scientific reports, 7, 45749.
https://doi.org/10.1038/srep45749
Manthey, J.D., Reyes-Velasco, J., Freilich, X. & Boissinot, S. (2017) Diversification in a biodiversity hotspot: genomic variation in the river frog Amietia nutti across the Ethiopian Highlands. Biological Journal of the Linnean Society, 122 (4), 801–813.
https://doi.org/10.1093/biolinnean/blx106
Marques, M.P., Ceriaco, L.M., Bandeira, S., Pauwels, O.S. & Bauer, A.M. (2019) Description of a new long-tailed skink (Scincidae: Trachylepis) from Angola and the Democratic Republic of the Congo. Zootaxa, 4568 (1), 51–68.
https://doi.org/10.11646/zootaxa.4568.1.3
Mausfeld, P., Schmitz, A., Böhme, W., Misof, B., Vrcibradic, D. & Rocha, C.F.D. (2002) Phylogenetic affinities of Mabuya atlantica Schmidt, 1945, endemic to the Atlantic Ocean archipelago of Fernando de Noronha (Brazil): necessity of partitioning the genus Mabuya Fitzinger, 1826 (Scincidae: Lygosominae). Zoologischer Anzeiger, 241 (3), 281–293.
https://doi.org/10.1078/0044-5231-00081
Mausfeld, P., Schmitz, A., Ineich, I. & Chirio, L. (2004) Genetic variation in two African Euprepis species (Reptilia, Scincidae), based on maximum-likelihood and Bayesian analyses: taxonomic and biogeographic conclusions. Bonner zoologische Beiträge, 52 (1/2), 159–177.
Mittermeier, R.A., Turner, W.R., Larsen, F.W., Brooks, T.M. & Gascon, C. (2011) Global biodiversity conservation: The critical role of hotspots. In: Zachos, F.E. & Habel, J.C. (Eds.), Biodiversity hotspots. Springer, Berlin and Heidelberg, pp. 3–22.
https://doi.org/10.1007/978-3-642-20992-5_1
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.
Sindaco, R., Metallinou, M., Pupin, F., Fasola, M. & Carranza, S. (2012) Forgotten in the ocean: systematics, biogeography and evolution of the Trachylepis skinks of the Socotra Archipelago. Zoologica Scripta, 41 (4), 346–362.
https://doi.org/10.1111/j.1463-6409.2012.00540.x
Šmíd, J., Mazuch, T., Nováková, L., Modrý, D., Malonza, P.K., Elmi, H.S.A., Carranza, S. & Moravec, J. (2019) Phylogeny and Systematic Revision of the Gecko Genus Hemidactylus from the Horn of Africa (Squamata: Gekkonidae). Herpetological Monographs, 33 (1), 26–47.
https://doi.org/10.1655/HERPMONOGRAPHS-D-19-00010.1
Šmíd, J., Moravec, J., Kratochvíl, L., Nasher, A.K., Mazuch, T., Gvoždík, V. & Carranza, S. (2015) Multilocus phylogeny and taxonomic revision of the Hemidactylus robustus species group (Reptilia, Gekkonidae) with descriptions of three new species from Yemen and Ethiopia. Systematics and Biodiversity, 13 (4), 346–368.
https://doi.org/10.1080/14772000.2014.996264
Teketay, D. & Bekele, T. (1995) Floristic composition of Wof-Washa natural forest, Central Ethiopia: Implications for the conservation of biodiversity. Feddes Repertorium, 106, 127–147.
https://doi.org/10.1002/fedr.19951060123
The Nature and Biodiversity Conservation Union (NABU) (2020) NABU’s Follow-up Biodiversity Assessment at the Kafa Biosphere Reserve. Addis Ababa, Berlin, 160 pp.
Uetz, P., Freed, P. & Hošek, J. (Eds.) (2020) The Reptile Database. Available from: http://www.reptiledatabase.org (accessed 3 August 2020)
Wagner, P., Mazuch, T. & Bauer, A.M. (2013) An extraordinary tail-integrative review of the agamid genus Xenagama. Journal of Zoological Systematics and Evolutionary Research, 51 (2), 144–164.
https://doi.org/10.1111/jzs.12016
Weinell, J.L. & Bauer, A.M. (2018) Systematics and phylogeography of the widely distributed African skink Trachylepis varia species complex. Molecular phylogenetics and evolution, 120, 103–117.
https://doi.org/10.1016/j.ympev.2017.11.014
Weinell, J.L., Branch, W.R., Colston, T.J., Jackman, T.R., Kuhn, A., Conradie, W. & Bauer, A.M. (2019) A species-level phylogeny of Trachylepis (Scincidae: Mabuyinae) provides insight into their reproductive mode evolution. Molecular phylogenetics and evolution, 136, 183–195.
https://doi.org/10.1016/j.ympev.2019.04.002
Werner, F. (1907) Ergebnisse der mit Subvention aus der Erbschaft Treitl unternommenen zoologischen Forschungsreise Dr. Franz Werner's nach nach dem Ägyptischen Sudan und Norduganda. XII. die Reptilien und Amphibien. Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften in Wien, 116, 1823–1926.
Yirga, F., Marie, M., Kassa, S. & Haile, M. (2019) Impact of altitude and anthropogenic disturbance on plant species composition, diversity, and structure at the Wof-Washa highlands of Ethiopia. Heliyon, 5 (8), e02284.
https://doi.org/10.1016/j.heliyon.2019.e02284