Orthetrum julia Kirby, 1900
Julia Skimmer
Type locality: Sierra Leone, no locality data available.
Diagnosis
Male is similar to O. saegeri 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) often being dominant in forest, but not exclusive to it; (2) Hw base often with dark brown patch; (3) metepimeral carina marked with black line; (4) hook of hamule slender, turned back- or outward, not excised anteriorly. [Adapted from Dijkstra & Clausnitzer 2014; this diagnosis not yet verified by author]
Habitat description
Mostly streams, but also standing and probably often temporary waters, headwaters, seeps and springs, mostly shaded by gallery forest, but also shaded by forest, in open areas in forest or open landscapes. Often with a soft (like muddy) bottom, probably especially pools in stream beds. From 0 to 2500 m above sea level, but mostly below 1600.
Distribution
Male © Dirk Motshagen
 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):
Adult, male; Zimbabwe, Manicaland, Mt Selinda-Chipinge road © Dijkstra, K.-D.B.
Male; Democratic Republic of Congo, Province Equateur, Lower Itimbiri © Dijkstra, K.-D.B.
Male; Democratic Republic of Congo, Province Orientale, © Dijkstra, K.-D.B.
Male; Democratic Republic of Congo, Province Orientale, Old Buta Road © Dijkstra, K.-D.B.
Male; Tanzania, Kigoma Region, Lower Malagarasi Basin © Dijkstra, K.-D.B.
Male; Liberia, Nimba County, Yekepa © Dijkstra, K.-D.B.
Pair; Liberia, Nimba County, northern bank Yah (Dayea) River near Gbapa © Dijkstra, K.-D.B.
Male; Liberia, Nimba County, Mt Tokadeh © Dijkstra, K.-D.B.
Male; Tanzania, Tanga Region, East Usambara Mts © Dijkstra, K.-D.B.
Female; Tanzania, Tanga Region, East Usambara Mts © Dijkstra, K.-D.B.
Pair; Tanzania, Tanga Region, East Usambara Mts © Dijkstra, K.-D.B.
Male; Democratic Republic of Congo, Katanga, Kundelungu National Park © Dijkstra, K.-D.B.
Male; Democratic Republic of Congo, Katanga, Kundelungu National Park © Dijkstra, K.-D.B.
Male; Liberia, Nimba County, West Nimba Proposed Forest Reserve © Dijkstra, K.-D.B. & M. Darpay
Male; Democratic Republic of Congo, Katanga, © Dijkstra, K.-D.B.
Adult, male; Angola, Uige Province, new campus site and environs © Clausnitzer, V. & Dijkstra, K.-D.B.
Adult, male; Angola, Uige Province, new campus site and environs © Dijkstra, K.-D.B.
Adult, male; Zimbabwe, Manicaland, below Vumba Mts, Essex Valley © Dijkstra, K.-D.B.
References
- Kirby, W. F. (1900). Report on the Neuroptera Odonata collected by Mr E. E. Austen at Sierra Leone during August and September 1899. Annals Magazine Natural History, 6, 67-79. [PDF file]
- Pinhey, E.C.G. (1971). Odonata of Fernando Po Island and of neighbouring Cameroons Territory. Journal Entomological Society Southern Africa, 34, 215-229. [PDF file]
- Pinhey, E.C.G. (1961). Dragonflies (Odonata) of Central Africa. Occasional Papers Rhodes-Livingstone Museum, 14, 1-97. [PDF file]
- Förster, F. (1906). Die Libellulidengattungen von Afrika und Madagaskar. Jahresbericht Mannheimer Vereins Naturkunde, 72, 1-67.
- Martin, R. (1907). Odonates de la Guinée espagnole. Memorias Sociedad espanola Historia natural, 1, 421-432. [PDF file]
- Lieftinck, M.A. (1969). Odonates Anisoptères - Odonata Anisoptera. Explor. hydrob. Lac Bangweolo and Luapula, 14, 1-64. [PDF file]
- Pinhey, E.C.G. (1971). Odonata collected in Republique Centre-Africaine by R. Pujol. Arnoldia, 5, 1-16. [PDF file]
- Longfield, C. (1955). The Odonata of N. Angola. Part I. Publicacoes culturais Companhia Diamantes Angola, 27, 11-63. [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/ [2024-10-30].
