Heliaeschna ugandica McLachlan, 1896
Uganda Duskhawker

Type locality: Uganda, no locality data available.

Diagnosis

Male is similar to H. sembe by (a) moderate size, Hw 38-46 mm; (b) frons completely dark or with stemmed T-shaped mark; (c) wing bases usually clear; (d) anal triangle of 3 cells; (e) anal loop of 7-14 cells; (f) cerci wide, blade about 3x as wide as stalk, and without basal thickening; (g) widest point of blade of cerci at about mid-length of blade; (h) epiproct 45-55% length of cerci. However, differs by (1) metapleural and humeral bands absent; (2) 20-25 rather than 26-30 Ax in Fw, but occasionally as many as 27. See diagnosis of very similar H. trinervulata. [Adapted from Dijkstra & Clausnitzer 2014]

Habitat description

Not known well, but probably temporary standing waters shaded by forest. Probably often with coarse detritus and a soft (like muddy) bottom. From 1100 to 1300 m above sea level, but possibly down to sea level.

Distribution

Appendages (dorsal view)

Abdominal segment 2 (ventral 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.

References

• McLachlan, R. (1895). On some Odonata of the subfamily Aeschnina. Annals Magazine Natural History Series 6, 17, 409-425.
• Longfield, C. (1959). The Odonata of N. Angola. Part II. Publicacoes culturais Companhia Diamantes Angola, 45, 13-42. [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]

Citation: Dijkstra, K.-D.B (editor). African Dragonflies and Damselflies Online. http://addo.adu.org.za/ [2024-11-15].