Acisoma inflatum Selys, 1882
Stout Pintail


  • scientific: A. panorpoides ascalaphoides auctt. nec Rambur, 1842 (in part); A. inflata

Type locality: Algeria, no locality data available.


Male is similar to A. variegatum by (a) labrum largely pale; (b) pale markings on Abd fragmented and frayed, extend to S7-8, S4-5 broadly black on dorsal carina; (c) S3-4 strongly swollen, S5 sharply narrowed, S6-10 slender. However, differs by (1) ranging from S Africa to W and N Africa; (2) carinae forming ventro-apical corner of S4 are entirely black, rather than largely white; (3) lateral carina of S5 all black, rather than usually partly white; (4) S6 less than 2.5x as long as high. [Adapted from Dijkstra & Clausnitzer 2014]

Habitat description

Mostly standing and probably often temporary waters, but also rivers and possibly flowing channels in marshes, in open landscapes sometimes in forest. Usually with emergent and aquatic vegetation, often with a soft (like muddy) bottom. From 0 to 1700 m above sea level.


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

Male © Wil Leurs

Male (young) © Allan Brandon

Abdomen (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):

Adult, male; Zimbabwe, Manicaland, Vumba Mts © Dijkstra, K.-D.B.

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

Male; Liberia, Grand Bassa County, Buchanan © Dijkstra, K.-D.B.

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

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

Female; Democratic Republic of Congo, Province Orientale, © 67192


  • de Sélys-Longchamps, E. (1881). Spedizione italiana nell'Africa equatoriale. Resulati zoologici. Odonati. Annali Museo Civico Storia Naturale Genova, 16, 222-225.
  • 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]
  • Schmidt, E. (1951). Libellen aus Portugiesisch Guinea, mit Bemerkungen über andere aethiopische Odonaten. Arquivos Museu Bocage, 20, 125-200. [PDF file]
  • D' Andrea, M., and Carfi, S. (1997). Nuove raccolte di odonati del Camerun con note su Agriocnemis maclachlani Selys, 1877 edescrizione di Agriocnemis dissimilis sp. nov. e Trithemis osvaldae sp. nov. Atti Societa italiana Scienze naturali, 136, 157-190. [PDF file]

Citation: Dijkstra, K.-D.B (editor). African Dragonflies and Damselflies Online. [2024-07-25].