Medium-sized to fairly large, brownish and pale blue, with a light, single stripe on side of thorax. Rocky streams in fynbos or bushy savanna.
Throughout much of SA up to 1500 m a.s.l. To Mediterra- nean.
Face: all light greenish grey, spectacled with fine, cream line. Labium pale yellow without dark median line. Labrum pale yellow. Vertex with small, pointed, conical peaks. Eyes: dark greyish turquoise, brownish below. Synthorax: pruinescent dull blue with no side pattern, but narrow, dark, sharply-defined, wedge-shaped, stripe on each shoulder, and showing through pruinescence. Wings: clear, becoming slightly pruinescent with age. Underside of antenodal crossveins and costa yellowish. Pterostigmas: yellowish brown and fairly long (3.7 mm). Abdomen: pruinescent blue. Female: orange-brown. Face and eyes light brown. Vertex shiny brownish black to cream at sides and at back, shallowly dimpled and with small peaks. Thorax largely pale at sides, with narrow, pointed, brown, shoulder stripe, and also a brown side stripe. Abdomen orangy brown with a very fine, mid-dorsal blackish line. Small foliations, yellowish with black margins.
In size, this rare species is similar to Orthetrum chrysostigma. General appearance is a small O. julia falsum but with paler pterostigmas. Lines on thorax are narrower and more sharply defined than in O. julia falsum. Also, labium has no central, dark marking. Secondary genitalia are very similar to O. julia falsum but a wider space between hamule and genital lobe. The yellow on the underside of the antenodal crossveins is very distinctive.
Habitat and Ecology
Shallow, rocky streams and pools in fairly dry areas.
Life History and Behavior
Dartsswiftlyoverwater or grassy river flats, frequently returning to same perch, which may be a stem, boulder or ground.
Molecular Biology and Genetics
Statistics of barcoding coverage: Orthetrum chrysostigma
Public Records: 0
Specimens with Barcodes: 5
Species With Barcodes: 1
IUCN Red List Assessment
Red List Category
Red List Criteria
- 2006Least Concern (LC)
|This article may be expanded with text translated from the corresponding article in the German Wikipedia. (December 2014)|
Orthetrum chrysostigma, the epaulet skimmer, is a species of dragonfly in the family Libellulidae. It is found in Algeria, Angola, Benin, Botswana, Burkina Faso, Cameroon, Central African Republic, Chad, the Democratic Republic of the Congo, Ivory Coast, Egypt, Equatorial Guinea, Ethiopia, Gambia, Ghana, Guinea, Kenya, Liberia, Libya, Malawi, Mali, Mauritania, Morocco, Mozambique, Namibia, Niger, Nigeria, Senegal, Sierra Leone, Somalia, South Africa, Sudan, Tanzania, Togo, Uganda, Zambia, Zimbabwe, and possibly Burundi as well as Canary Islands and Portugal. It was recently recorded in the Maltese Islands in 2010.
Its natural habitats are subtropical or tropical moist lowland forests, dry savanna, moist savanna, subtropical or tropical dry shrubland, subtropical or tropical moist shrubland, rivers, intermittent rivers, shrub-dominated wetlands, swamps, freshwater lakes, intermittent freshwater lakes, freshwater marshes, intermittent freshwater marshes, and freshwater springs. The adults prey on various flying insects, with the bodies of the males being vivid blue and those of the females a bright green color.
- GAUCI, C. & SCIBERRAS, A. (2010) First Records of Orthetrum chrysostigma (Odonata:Libellulidae) Burmeister, 1839 in the Maltese Islands. Central Mediterranean Naturalist 5(2):78-80. Nature Trust Malta publications.