Two new species of the southern African genus Xiphoscelis Burmeister, 1842 are recognised and described, X. braunsi sp. nov. from the Eastern and Western Cape Karoo (South Africa) and X. namibica sp. nov. from the Huns Mountains of southern Namibia and adjacent ranges in South Africa. These were previously overlooked and grouped together with X. schuckardi Burmeister, 1842, but further material and more in-depth analyses have now revealed their clear separation on the basis of key diagnostic features, including clypeal structure, metatibial spur development and aedeagal shape. The densely and coarsely costate elytral structure and the black to brown colour of these species are symplesiomorphies shared with a number of the most primitive genera among the African Cetoniinae. However, these characters also reflect the convergent adaptation to hot and arid conditions they share with several other species occurring in this region. Phylogenetic relationships of the genus with other Cetoniinae are explored using the larval characters highlighted in the description of the 3rd instar larva of X. braunsi sp. nov. The extraordinary hypertrophy observed in the male metatibial spur of species in this genus, and particularly in X. schuckardi, appears to represent a defence mechanism against potential predators on the ground, apart from playing a role during mating.

Department of Zoology Charles University CZ 128 44 Vinicna 7 Praha 2 Czech Republic Charles University Prague Czech Republic

School of Environmental Sciences Nelson Mandela University P O Box 77000 Port Elizabeth 6031 South Africa Nelson Mandela University Port Elizabeth South Africa

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Beinhundner G. (2017) The Cetoniinae of Africa. Gerhard Beinhundner, Euerbach, 1199 pp.

Bourgoin A. (1920) Description d’un genre nouveau et d’une espèce nouvelle de Cétoine provenant des récoltes de Rohan-Chabot dans l’Afrique Australe. Bulletin du Muséum national d’Histoire naturelle 26(7): 627–628. 10.5962/bhl.part.1211 DOI

Böving AG. (1936) Description of the larva of Plectris aliena Chapin and explanation of new terms applied to the epipharynx and raster. Proceedings of the Entomological Society of Washington 38: 169–185.

Burmeister H. (1842) Handbuch der Entomologie 3, T.E.F. Enslin, Berlin, 830 pp.

Fabricius C. (1781) Species lnsectorum exhibentes eorum differentias specificas, synonyma, auctorum, loca natalia, metamorphosia, adiectis observationibus, descriptionibus. CE Bohnii, Hamburg, 552 pp 10.5962/bhl.title.36509 DOI

Felsenstein J. (1985) Confidence limits on phylogenies: an approach using the bootstrap. Evolution 39: 783–791. 10.1111/j.1558-5646.1985.tb00420.x PubMed DOI

Gory H, Percheron A. (1833) Monographie des Cétoine set genres voisins, formant, dans les familles naturelles de Latreille, la division des Scarabées mélitophiles. Paris: J.-B. Baillière, 302 pp. 10.5962/bhl.title.8957 DOI

Holm E, Marais E. (1992) Fruit chafers of southern Africa (Scarabaeidae: Cetoniini). Ekogilde, Hartbeespoort (South Africa), 326 pp.

Holm E, Stobbia P. (1995) Fruit Chafers of Southern Africa (Scarabaeidae: Cetoniinae). Appendix I. Giornale italiano di Entomologia 7: 289–300.

Janson OE. (1878) Notices of new or little known Cetoniidae No. 4. Cistula Entomologica 2(1875–1882): 299–304.

Lansberge JW van. (1886) Scarabaeides, Buprestides et Cerambycides de l’Afrique occidentale, envoyes au Musee de Leyde par MM.Veth et Van der Kellen (Note XIII). Notes from the Leyden Museum 8: 69–120.

Kouklík O. (2017) Larval morphology of Goliathini (Coleoptera: Cetoniinae) and its contribution towards the understanding of the group’s evolution. MSc. thesis, Dept. of Zoology, Charles University, Prague, 86 pp. [in Czech with English abstract]

Krikken J. (1978) Some peculiar Cetoniine beetles from South West Africa. Zoologische Mededelingen Leyden 53(24): 263–271.

Krikken J. (1982) Some unusual genera and species from Africa (Coleoptera: Cetoniidae). Revue de Zoologie Africaine 96(3): 529–538.

Krikken J. (1984) A new key to the suprageneric taxa in the beetle family Cetoniidae, with annotated lists of the known genera. Zoologische Verhandelingen Leiden 210: 3–75.

Motschulsky Vde. (1845) Remarques sur la collection de Coléoptères russes de Victor de Motschulsky. Bulletin de la Société impériale des naturalistes de Moscou 18: 1–127.

Mucina L, Rutherford MC. (2006) The Vegetation of South Africa, Lesotho and Swaziland. Strelitzia 19. South African National Biodiversity Institute, Pretoria, 807 pp.

Nixon K C. (2002) ‘WinClada, Version 1.0000.’ Published by the author, Ithaca, NY.

Péringuey L. (1907) Descriptive catalogue of the Coleoptera of South Africa (Lucanidae and Scarabaeidae). Transactions of the South African Philosophical Society 13: 1–546. 10.1080/21560382.1904.9525994 DOI

Perissinotto R, Villet MH, Stobbia P. (2003) Revision of the genus Xiphoscelis Burmeister 1842 (ColeopteraScarabaeidaeCetoniinae), with description of two new species and notes on its phylogeny and ecology. Tropical Zoology 16: 63–82. 10.1080/03946975.2003.10531184 DOI

Ritcher PO. (1966) White Grubs and their Allies. A Study of North American Scarabaeoid Larvae. Oregon State Monographs. Studies in Entomology Nr. 4. Oregon State University Press, Corvallis, 219 pp.

Ruter G. (1958) Contribution à l’étude des Cétonides malgaches. Bulletin de la Société entomologique de France 62: 30–33.

Ruter G. (1978) Contribution a l’étude des Cetonides. Bulletin de la Société entomologique de France 83: 125–137.

Sakai K, Nagai S. (1998) The Cetoniine Beetles of the World. Mushi-Sha’s Iconographic Series of Insects, Vol. 3. Mushi-Sha, Tokyo, pp. 421.

Sawada H. (1991) Morphological and Phylogenetical Study on the Larvae of Pleurostict Lamellicornia in Japan. Tokyo University of Agriculture Press, Tokyo, 132 pp. [+ 157 plates]

Schaum H. (1849) Observations critiques sur la famille des Lamellicornes mélitophiles (2e Partie). Annales de la Société entomologique de France (2)7: 241–295.

Schenkling S. (1921) Scarabaeidae: Cetoniinae. In: Junk W. (Ed.) , Coleopterorum Catalogus.W Junk, Berlin, 72: 1–431. 10.1007/978-94-011-9697-0_1 DOI

Šípek P, Fabrizi S, Eberle J, Ahrens D. (2016) A molecular phylogeny of rose chafers (Coleoptera: Scarabaeidae: Cetoniinae) reveals a complex and concerted morphological evolution related to their flight mode. Molecular Phylogenetics and Evolution 101: 163–175. 10.1016/j.ympev.2016.05.012 PubMed DOI

Šípek P, Král D. (2012) Immature stages of the rose chafers (Coleoptera: Scarabaeidae: Cetoniinae): a historical overview. Zootaxa 3323: 1–26. 10.11646/zootaxa.3323.1.1 DOI

Swofford DL. (2002) ‘PAUP*: Phylogenetic Analysis Using Parsimony. Version 4.0b10.’ Sinauer, Sunderland, MA.

Vondráček D, Venderová A, Král, Šípek P. (2018) Phylogeography and DNA-based species delimitation provide insight into the taxonomy of the polymorphic rose chafer Protaetia (Potosia) cuprea species complex (Coleoptera: Scarabaeidae: Cetoniinae) in the Western Palearctic. PLOS ONE 13(2): e0192349. 10.1371/journal.pone.0192349 PubMed DOI PMC