Orthetrum saegeri Pinhey, 1966
Eastern Mushroom Skimmer

Type locality: P.N.G[aramba]., DRC

Diagnosis

Male is similar to O. julia by (a) frons at most with dorsal dark markings running down onto shields; (d) 1 row in radial planate, sum of cell-doublings 0-10 [0-14]; (c) all subcostal Ax dark; (f) Abd of normal proportions, shorter than Hw; (b) labrum always partly pale, although often with black; (e) Abd usually shorter than Hw (if longer, S4-6 with transverse bands); (g) S4-6 with pale transverse subapical bands or spots, S7-9 and usually S10 all dark. Cerci often all pale in young specimens. However, differs by (1) localised in forest; (2) Hw base only faintly yellow; (3) metepimeral carina not marked with black line; (4) hook of hamule broadened, hood-like, turned outward, with anterior excision at base. [Adapted from Dijkstra & Clausnitzer 2014; this diagnosis not yet verified by author]

Habitat description

Mostly standing and often temporary waters, but also streams, in open areas in forest, but sometimes shaded by gallery forest. Often with emergent vegetation, coarse detritus, a soft (like muddy) bottom, and probably blackwater. From 0 to 900 m above sea level, but possibly up to 1200.

Distribution

confirmed: Angola; Cameroon; Congo-Brazzaville; Democratic Republic of the Congo; Gabon; Nigeria; Uganda; Zambia


Male (mature) © Jens Kipping


Male (young) © KD Dijkstra


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; Liberia, Grand Gedeh County, Putu Iron Ore Mining concession © Dijkstra, K.-D.B. & A. Dayeker


Male; Liberia, Grand Gedeh County, Putu Iron Ore Mining concession © Dijkstra, K.-D.B. & A. Dayeker


Male; Gabon, Haut-Ogooué, "Africa No1" (= Station de radiodiffusion de Moyabi) © Dijkstra, K.-D.B. & Cédric Vanappelghem


Female; Liberia, Nimba County, Mt Tokadeh © Dijkstra, K.-D.B.


Adult, male; Angola, Uige Province, new campus site and environs © Dijkstra, K.-D.B.


Adult, male; Gabon, NGOUNIE, Parc National des monts Birougou © Mézière, Nicolas


Adult, male; Gabon, Haut-Ogoué, Plateau Batéké - vallée de la Léconi © Mézière, Nicolas, JENS KIPPING, HANNES KRAHNSTOEVER


Adult, male; Gabon, Haut-Ogoué, Plateau Batéké - vallée de la Léconi © Mézière, Nicolas, JENS KIPPING, HANNES KRAHNSTOEVER


Adult, male; Angola, Uige Province, new campus site and environs © Dijkstra, K.-D.B.

Reference

  • Pinhey, E.C.G. (1966). Odonata. Exploration Parc National Garamba. Mission H de Saeger, 45, 1-114.

Citation: Dijkstra, K.-D.B (editor). African Dragonflies and Damselflies Online. http://addo.adu.org.za/ [2019-07-23].