Rediviva (Gigaviva) Kuhlmann & Jürgensen & Michez 2020, subgen. nov.
- 1. Zoological Museum of Kiel University, Hegewischstr. 3, D- 24105 Kiel, Germany
- 2. University of Mons, Laboratory of Zoology, Place du parc, 20, 7000 Mons, Belgium
Description
Rediviva (Gigaviva) subgen. nov.
Type species: Rediviva (Gigaviva) gigas Whitehead & Steiner 1993, designated here.
The only species in this subgenus is R. gigas.
Diagnosis. The subgenus is monotypic and contains only R. gigas which is the largest species of the genus (15–18 mm). Males are characterised by a combination of S7 without lateral lobes (with lateral lobes in all other species except Redivivoides karooensis and R. namaquaensis), median lobes basally twice as broad as long (Whitehead & Steiner 2001: Figs 5B–C) (as broad as long or longer in other subgenera) and S8 apically broadened with margin deeply cleft (strait, notched, emarginate or semi-circular in other subgenera) (Whitehead & Steiner 2001: Figs 5D, 64G).
Females show a unique combination of a broadened hind tibia and basitarsus with the scopa consisting of densely plumose pubescence for transporting floral oil (Fig. 3f) (in Redivivoides hind tibia not broadened and without plumose pubescence) and a tridentate mandible (bidentate in other subgenera). The species has an isolated position within the genus and, among others, collects oil on flowers of Tritoniopsis parviflora (Iridaceae) (Manning & Goldblatt 2002, 2005) and Ixianthes retzioides (Scrophulariaceae) (Whitehead & Steiner 1993, Steiner & Whitehead 1996) that are not used by any other Rediviva species (Kuhlmann & Hollens 2015).
Etymology. The new subgeneric name is a combination of the first part of the specific epithet of the type species R. gigas and the last part of the generic name Rediviva. The gender of the name is feminine.
Distribution. The species is only known from the southwestern part of the winter rainfall region (Whitehead & Steiner 2001).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Melittidae
- Genus
- Rediviva
- Kingdom
- Animalia
- Order
- Hymenoptera
- Phylum
- Arthropoda
- Scientific name authorship
- Kuhlmann & Jürgensen & Michez
- Taxonomic status
- subgen. nov.
- Taxon rank
- subGenus
- Taxonomic concept label
- Rediviva (Gigaviva) Kuhlmann, Jürgensen & Michez, 2020
References
- Whitehead, V. B. & Steiner, K. E. (1993) A new Rediviva bee (Hymenoptera: Apoidea: Melittidae) that collects oil from orchids. African Entomology, 1, 159 - 166.
- Whitehead, V. B. & Steiner, K. E. (2001) Oil-collecting bees of the winter rainfall area of South Africa (Melittidae, Rediviva). Annals of the South African Museum, 108, 143 - 277.
- Manning, J. C. & Goldblatt, P. (2002) The pollination of Tritoniopsis parviflora (Iridaceae) by the oil-collecting bee Rediviva gigas (Hymenoptera: Melittidae): the first record of oil-secretion in African Iridaceae. South African Journal of Botany, 68, 171 - 176. https: // doi. org / 10.1016 / S 0254 - 6299 (15) 30416 - 6
- Manning, J. C. & Goldblatt, P. (2005) Radiation of pollination systems in the Cape genus Tritoniopsis (Iridaceae: Crocoidae) and the development of bimodal pollination strategies. International Journal of Plant Science, 166, 459 - 474. https: // doi. org / 10.1086 / 428703
- Steiner, K. E. & Whitehead, V. B. (1996) The consequences of specialization for pollination in a rare South African shrub, Ixianthes retzioides (Scrophulariaceae). Plant Systematics and Evolution, 201, 131 - 138. https: // doi. org / 10.1007 / BF 00989056
- Kuhlmann, M. & Hollens, H. (2015) Morphology of oil-collecting pilosity of female Rediviva bees (Hymenoptera: Apoidea: Melittidae) reflects host plant use. Journal of Natural History, 49, 561 - 573. https: // doi. org / 10.1080 / 00222933.2014.939732