Urothemis edwardsii (Selys, 1849)
Blue Basker

Type locality: Lake Houberia, Algeria

Diagnosis

Male is similar to U. venata by (a) Abd, thorax and frons brown to black, with Abd and often thorax blue pruinose with maturity; (b) dark patch at Hw base often does not enter triangle. However, differs by (1) labium cream, often broadly blackish centrally; (2) anterior veins yellowish, or all veins blackish; (3) hamule distinctly longer than genital lobe and about as wide; (4) Abd dark blue pruinose, sparing broad black middorsal line from base to tip. [Adapted from Dijkstra & Clausnitzer 2014]

Habitat description

Standing waters, rivers and flowing channels in marshes, but possibly also lakes, in open landscapes, open areas in forest or shaded by gallery forest. Usually with emergent vegetation and often coarse detritus and a soft (like muddy) bottom. From 0 to 1600 m above sea level.

Distribution

confirmed: Algeria; Angola; Benin; Botswana; Burkina Faso; Côte d'Ivoire; Cameroon; Chad; Congo-Brazzaville; Democratic Republic of the Congo; Ethiopia; Gabon; Gambia; Ghana; Guinee-Bissau; Kenya; Liberia; Malawi; Mali; Mauritania; Mozambique; Namibia; Niger; Nigeria; Republic of South Africa; Rwanda; Senegal; Sierra Leone; Somalia; South Sudan; Sudan; Tanzania; Uganda; Zambia; Zimbabwe; NOT confirmed: Republic of Guinea


Male © Hans-Joachim Clausnitzer


Abdominal segment 2 (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.


Barcode specimen(s):


Male; Democratic Republic of Congo, Province Orientale, © Dijkstra, K.-D.B.


Male; Democratic Republic of Congo, Province Orientale, Kisangani © Dijkstra, K.-D.B.


Male; Democratic Republic of Congo, Province Orientale, Kisangani © Dijkstra, K.-D.B.


Male; Democratic Republic of Congo, Katanga, © Dijkstra, K.-D.B.

References

  • de Sélys-Longchamps, E. (1849). Libellulines de l'Algerie Histoire naturelle des animaux articulés. Exploration scientifique de l'Algérie, pendant les années 1840, 1841 et 1842 Imprimerie Nationale, Paris, 115, 1-527.
  • Ris, F. (1921). The Odonata or Dragonflies of South Africa. Annals South African Museum, XVIII, 245-452. [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]
  • Ris, F. (1931). Odonata aus Süd-Angola. Revue Suisse Zoologie, 38, 97-112. [PDF file]
  • Schouteden, H. (1934). Annales Musee Congo belge Zoologie 3 Section 2, 3, 1-84. [PDF file]
  • Lieftinck, M.A. (1969). Odonates Anisoptères - Odonata Anisoptera. Explor. hydrob. Lac Bangweolo and Luapula, 14, 1-64. [PDF file]
  • Schmidt, E. (1951). Libellen aus Portugiesisch Guinea, mit Bemerkungen über andere aethiopische Odonaten. Arquivos Museu Bocage, 20, 125-200. [PDF file]
  • Aguesse, P. (1966) Contribution à la faune de Congo (Brazzaville) Mission A. Villiers et A. Descarpentries XXI. Odonates. Bulletin de l'Institut fondamental d'Afrique noire (A) 28: 783-797 [PDF file]

Citation: Dijkstra, K.-D.B (editor). African Dragonflies and Damselflies Online. http://addo.adu.org.za/ [2019-07-22].