Syncordulia serendipator Rustic Presba 104 505 Presba Rustic March 2008 Jonkershoek 117 554 Syncordulia serendipator Rustic Presba

Rustic Presba   Rustieke Swalker

Syncordulia serendipator Dijkstra et al., 2007
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Syncordulia serendipator Rustic Presba
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Short Description:

Rustic Presba, Syncordulia serendipator, Genus Syncordulia, Family Libelluloidea incertaelarge sized, stout,is large, stout,dark brown and spotted yellow

Key identification features:

Male:

  • Face all yellowish brown.
  • Eyes dark grey with brownish hue.
  • Thorax glossy, almost entirely brownish black with some paler areas and spots, fine yellow line runs along top up to wing bases, covered with long whitish hairs.
  • Wings clear with black venation,slightly smoky at bases. Pterostigmas black,2.9 mm long.
  • Abdomen stout, very dark blackish brown with paired light orange and squarish spots at end of all but the last two segments. Pale markings on S3-8 concentrated apically on segments. Segment 9 virtually all black, segment 10 with central square yellowish spot. Appendages very robust, dark brown. Cerci stout, less than 3x as long as S10, robustly angled ventrally near base and laterally near apex. Epiproct divide into two branches or forks

Female:

  • Similar to male,
  • Overall more robust
  • Pale markings slightly larger
  • Eyes browner,wings slightly darker with yellowish bases.
  • Lobes of female’s vulvar scale less than half as long as the distance between their bases.
Compared with other species:
  • S. venator (Mahogany Presba) 104 501 Presba Mahogany Nov 2015 Kogelberg is very a distinctive reddish brown, yellow-spotted species, which is much redder overall than Syncordulia gracilis (Yellow Presba) Syncordulia gracilis Yellow Presba Female and S. legator (Gilded Presba) Syncordulia legator Gilded Presba Male Kogelberg Western Cape  both of which are essentially yellowish.
  • S. venator 104 501 Presba Mahogany Nov 2015 Kogelbergdoes not have the distinctive yellow stripes on side of thorax as does S. gracilisSyncordulia gracilis Yellow Presba Female
  • S. venator 104 501 Presba Mahogany Nov 2015 Kogelberg is similar to S. serendipator (Rustic Presba)Syncordulia serendipator Rustic Presba both in overall colour and size.
  • S. venator abdominal spots are 'hoof' shaped and pale yellow when viewed from above, whereas they are more solid and orangish in S. serendipator.
  • S. venator also has a fine, widening line along the mid-line of the thorax, barely present in S. serendipator.
    Full credit for this comparison to Michael J Samways.
Distribution and habitat:
  • Prefer streams, but possibly also rivers, shaded by gallery forest, but sometimes in open landscapes. Often calmer sections (like pools) with rocks and probably submerged roots and/or coarse detritus. Inferred to occur from 100 to 800 m above sea level.
Behaviour:
  • Very powerful flier, hawking swiftly over pools, leaving abruptly to fly across montane slopes. It even flies up to mountain peaks.
Link to Further reading:

Further reading and other information:

http://vmus.adu.org.za/vm_map_afr.php?&database=odonata&grid=2&outline=1&key=0&map=3&spp=666270 Books:
A Guide to Dragonflies and Damselflies of South Africa. p..140
Dragonfly Biotic Index ... p. 130
Dragonflies and Damselflies of South Africa ...p. 137
Websites:
Odonata Atlas of Africa - VMU Number 666270
A Visual Guide to the Damselflies and Dragonflies of South Africa
The IUCN Red List of Threatened Species  Vulnerable
African Dragonflies & Damselflies Online
Other Information:
Size Comparison Diagram Dragonflies, Damselflies

Morphology of a Dragonfly, Damselfly
Map of South Africa

, Genus Syncordulia, Family Libelluloidea incertae is medium-sized to fairly large, slender, dark brown, light brown, black and yellow.

Key identification features:

Male:

  • Face is yellow to sunflower yellow with the vertex rounded and shiny black.
  • Eyes are dark to light grey.
  • Thorax is dark brown with two narrow yellow to bright yellow stripes that is bordered by black lines.  A thin yellow dorsal line on thorax and between wing bases. Wings are smoky becoming clear in older individuals but may have a smoky patch at the base of the wing.
  • Abdomen is slender when viewed from above with a broken dark brown to light brown line along its length. Appendages are long and black.

Female:

  • Similar to males but with much stouter abdomen in side view and more extensive amber in wings.
Compared with other species:
  • S. venator (Mahogany Presba) is very a distinctive reddish brown, yellow-spotted species, which is much redder overall than Syncordulia gracilis (Yellow Presba) and S. legator (Gilded Presba)both of which are essentially yellowish.
  • S. venator does not have the distinctive yellow stripes on side of thorax as does S. gracilis.
  • S. venator is similar to S. serendipator (Rustic Presba), both in overall colour and size.
  • S. venator abdominal spots are 'hoof' shaped and pale yellow when viewed from above, whereas they are more solid and orangish in S. serendipator.
  • S. venator also has a fine, widening line along the mid-line of the thorax, barely present in S. serendipator.
    Full credit for this comparison to Michael J Samways.
Distribution and habitat:
  • Endemic to the mountainous areas of the south western part of the Western Cape Province of South Africa.
  • Very rare and localised.This species is rare everywhere in its range, and for a long time it has not been seen at many sites where it historically was present (e.g., Michell's Pass). With the removal of invasive alien trees, it has recovered at some localities (e.g., Franschhoek Pass), however it is still Vulnerable. It is known only from a few sites (around six locations). but this ma change as more data is gathered.
  • Frequents swift shallow montane rivers flowing over a bed of flat rocks in open valleys, with fynbos and grassy banks.
Behaviour:
  • Frequents swift shallow montane rivers flowing over a bed of flat rocks in open valleys, with fynbos and grassy banks in mostly open landscapes, but also open areas in forest. Probably especially calmer sections (like pools) with submerged roots and probably coarse detritus. Occurs from 0 to 900 m above sea level, but possibly higher up.
  • It is rarely over water, normally flying in fynbos or over low bushy vegetation, often several hundred metres from the water.
  • Rests close to the ground in thick vegetation, sometimes on the underside of branches where it is highly camouflaged.
Link to Further reading:

Further reading and other information:

http://vmus.adu.org.za/vm_map_afr.php?&database=odonata&grid=2&outline=1&key=0&map=3&spp=666290 Books:
A Guide to Dragonflies and Damselflies of South Africa. p..142
Dragonfly Biotic Index ... p. 139
Dragonflies and Damselflies of South Africa ...p. 132
Websites:
Warwick Tarboton
Odonata Atlas of Africa - VMU Number 666290

A Visual Guide to the Damselflies and Dragonflies of South Africa
The IUCN Red List of Threatened Species  Vulnerable
African Dragonflies & Damselflies Online
Other Information:
Size Comparison Diagram Dragonflies, Damselflies

Morphology of a Dragonfly, Damselfly
Map of South Africa

 

 

Link to Further reading:
A Guide to Dragonflies and Damselflies of South Africa
Dragonflies and Damselflies of South Africa
Dragonfly Biotic Index
Odonata Atlas of Africa VMU Number 666290
More about Dragonfly Anatomy
Map of South Africa
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