Neurogomphus alius Cammaerts, 2004
Large Siphontail

Type locality: Mekoum For., Souanke Dist[rict], Congo


Male is similar to N. martininus by (a) ranging from C DRC to Cameroon; (b) size, Hw 36-41 mm; (c) occiput notched in middle; (d) dark stripes on sides of thorax wider than pale ones; (e) 16-20 Ax in Fw; (f) lateral tooth of cerci (almost) indiscernible. However, differs by (1) postclypeus and thorax anterior of collar mainly green rather than black; (2) pale stripe on mesepimeron as or less extensive than that on metepisternum; (3) posterior hamule 2-3x (rather than 5-6x) as long as wide (lateral view); (4) Pt larger, with 3.3-4.0 mm. [Adapted from Dijkstra & Clausnitzer 2014; this diagnosis not yet verified by author]

Habitat description

Rivers in open areas in forest. Probably often with a soft (like muddy) bottom. From 100 to 800 m above sea level.


confirmed: Angola; Cameroon; Central African Republic; Congo-Brazzaville; Democratic Republic of the Congo; Equatorial Guinea; Gabon


Appendages (dorsal view)

Appendages (lateral view)

Abdominal segment 2 (lateral view)

Head (front)

Thorax (lateral view)

Thorax (dorsal 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, female; Angola, Uige Province, Loge valley © Dijkstra, K.-D.B.


  • Cammaerts, R. (2004). Taxonomic studies on African Gomphidae (Odonata, anisoptera). Arevision of the genus Neurogomphus Karsch, with the description of some larvae. Belgian Journal Entomology, 6, 91-239. [PDF file]

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