Syncordulia gracilis (Burmeister, 1839)
Yellow Presba

Type locality: Natal, South Africa

Diagnosis

Unique in genus by (1) thorax sides with dark-bordered cream stripes posterior to humeral and metapleural sutures; (2) pale costa pale, contrasting with dark Pt; (3) pale dorsal carina of S2-9 pale; (4) male abdomen slender, thickest (indistinctly in dorsal view) at S4-6; (5) male cerci only bent toward each other at tips; (6) male epiproct almost as long as cerci, with a pair of small dorsal teeth at about midlength (sometimes lost) and an apical knob; (7) female vulvar scale with inconspicuous appressed and incurved lateral lobes.

Habitat description

Rivers and streams in mostly open landscapes, but also open areas in forest. Probably especially calmer sections (like pools) with submerged roots and probably coarse detritus. Inferred to occur from 0 to 900 m above sea level, but possibly higher up.

Distribution

confirmed: Republic of South Africa


© Jens Kipping


Appendages (dorsal view)

Appendages (lateral view)

Abdomen (dorsal view)

Abdomen (lateral view)

Secondary genitalia (lateral view)

Vulvar scale (lateral view)

Vulvar scale (ventral 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; South Africa, Western Cape, Kogelberg Nature Reserve © Dijkstra, K.-D.B.


Adult, female; South Africa, Western Cape, Kogelberg Nature Reserve © Dijkstra, K.-D.B.


Adult, male; South Africa, Western Cape, Kogelberg Nature Reserve © Dijkstra, K.-D.B.


Adult, male; South Africa, Western Cape, Kogelberg Nature Reserve © Dijkstra, K.-D.B.


Adult, male; South Africa, Western Cape, Kogelberg Nature Reserve © Dijkstra, K.-D.B.


Adult, female; South Africa, Western Cape, Kogelberg Nature Reserve © Dijkstra, K.-D.B.


Adult, male; South Africa, Western Cape, Kogelberg Nature Reserve © Dijkstra, K.-D.B.


Adult, male; South Africa, Western Cape, Kogelberg Nature Reserve © Dijkstra, K.-D.B.

Reference

  • Burmeister, H. (1839). Handbuch der Entomologie. Zweiter Band, Befondere Entomologie. Zweite Abtheilung. Kauterfe. Gymnognatha. (Zweite hälfte; vulgo Neuroptera). Enslin, Berlin 755-1050. Odonata, 805-862.

Citation: Dijkstra, K.-D.B (editor). African Dragonflies and Damselflies Online. http://addo.adu.org.za/ [2017-04-30].