Neodythemis preussi (Karsch, 1891)
Swamp Junglewatcher

Synonyms:

• scientific: Allorrhizucha preussi

Type locality: Kribi, Cameroon

Diagnosis

Male is similar to N. katanga by (a) labium (largely) yellow; (b) metastigma enclosed in pale band; (c) antehumeral stripe broad and complete; (d) Fw discoidal field almost parallel-sided, of 1 cell-row at and distal to node, 2-5 cells wide on wing border; (e) apex of cerci thickened. However, differs by (1) ranging from W Uganda to W Africa; (2) posterior corner of metepimeron usually with prominent black marking; (3) metastigma at most with small black spot on dorsal side; (4) pale spots on S7 divided by black on dorsal carina; (5) cerci with shorter apex and more pronounced ventral angle, which tip of epiproct just reaches. [Adapted from Dijkstra & Clausnitzer 2014]

Habitat description

Streams, but possibly also headwaters, shaded by forest, but sometimes also in open areas in forest. Often with coarse detritus and a soft (like muddy) bottom, probably especially calmer sections (like pools) with blackwater and emergent vegetation. From 0 to 900 m above sea level.

Distribution

Appendages (lateral view)	Abdominal segment 2 (lateral view)
Thorax (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):

References

• Karsch, F. (1891). Übersicht der von Herrn Dr. Paul Preuss in Deutsch-West-Afrika 1890 gesammelten Odonaten. Entomologische Nachrichten, 17, 65-81.
• Sjöstedt, Y. (1900). Odonaten aus Kamerun, West -Afrika.Beltrage Zur Kenntnis der insektenfauna von Kamerun.Binhang Kongliga Svenka VetenskapsAkademiens Handlingar, 25, 1-62.
• Pinhey, E.C.G. (1962). Some records of Odonata collected in tropical Africa. Journal Entomological Society Southern Africa, 25, 20-50. [PDF file]
• Schouteden, H. (1934). Annales Musee Congo belge Zoologie 3 Section 2, 3, 1-84. [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]
• 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, 28, 783-797. [PDF file]

Citation: Dijkstra, K.-D.B (editor). African Dragonflies and Damselflies Online. http://addo.adu.org.za/ [2024-09-13].