Pseudagrion (B) nubicum Selys, 1876
- scientific: P. tricorne Pinhey, 1967
- vernacular: Nubian S. (Su, RL)
Type locality: Nubia, Sudan
Male is similar to P. torridum by (a) antehumeral stripes and postocular spots present; (b) antehumesal stripes green to blue; (c) apex of penis notched; (d) cerci small, not scoop-shaped; (e) cerci with prominent flange (long and wide wing-like internal ridge) bearing 1-2 teeth, including 1 in basal half; (f) paraprocts small, only weakly upturned. However, differs by (1) being widespread; (2) cerci parallel (rather than dicerging strongly), flange narrow, rather than very broad, with 1 (southern: Zambia, Zimbabwe) or 2 (further north) small teeth (dorsal view); (3) apex of cerci with mouth-like notch (lateral view), rather than with drawn-out point. [Adapted from Dijkstra & Clausnitzer 2014; this diagnosis not yet verified by author]
Standing waters and rivers, but possibly also large lakes, in open landscapes. Often with emergent vegetation. From 0 to 2000 m above sea level, but mostly below 400.
Appendages (dorsal view)
Appendages (lateral view)
Penis (lateral view)
Map citation: Clausnitzer, V., K.-D.B. Dijkstra, R. Koch, J.-P. Boudot, W.R.T. Darwall, J. Kipping, B. Samraoui, M.J. Samways, J.P. Simaika & F. Suhling, 2012. Focus on African Freshwaters: hotspots of dragonfly diversity and conservation concern. Frontiers in Ecology and the Environment 10: 129-134.
- de Sélys-Longchamps, E. (1876). Synopsis des Agrionines, 5me légion: Agrion (suite). Le grand genre Agrion. Bulletin Academie royale Belgique Serie 2, 42, 490-531.
- Longfield, C. (1936). Studies on African Odonata, with synonymy and descriptions of new species and subspecies. Transactions Royal Entomological Society London, 85, 467-498. [PDF file]
- Balinsky, B.I. (1963). A contribution towards the systematics of dragonflies of southern Africa (Odonata). Journal Entomological Society Southern Africa, 26, 228-255. [PDF file]
- Balinsky, B.I. (1961). Observations on the dragonfly fauna of the coastal region of Zululand, with descriptions of three new species (Odonata). Journal Entomological Society Southern Africa, 24, 72-91. [PDF file]
- Pinhey, E.C.G. (1961). Dragonflies (Odonata) of Central Africa. Occasional Papers Rhodes-Livingstone Museum, 14, 1-97. [PDF file]
- Pinhey, E.C.G. (1966). Check-list of dragonflies (Odonata) from Malawi, with description of a new Teinobasis Kirby. Arnoldia, 2, 1-24. [PDF file]
- Pinhey, E.C.G. (1973). Notes on some African representatives of the genus Pseudagrion Selys, 1876, with descriptions of two new species (Zygoptera: Coenagrionidae). Odonatologica, 2, 317-327. [PDF file]
- Ris, F., and Schmidt, E. (1936). Die Pseudagrion-Arten des kontinentalen Afrika. (Insecta, Odonata). Abhandlungen Senckenbergischen Naturforschenden Gesellschaft, 433, 1-68. [PDF file]
- Pinhey, E.C.G. (1967). Odonata Zygoptera. Exploration Hydrobiologique Bassin Lac Bangweolo Luapula, 14, 1-43. [PDF file]
- Fraser, F.C. (1955). Odonata collected by J. Hamon in French West Africa. Revue francaise Entomologie, 22, 237-243. [PDF file]
Citation: Dijkstra, K.-D.B (editor). African Dragonflies and Damselflies Online. http://addo.adu.org.za/ [2020-08-12].