|Africallagma glaucum (Burmeister,
1839), Swamp Bluet Damselfly, is a species of damselfly in family Coenagrionidae.
It is found in Botswana, Gabon, Ghana, Kenya, Malawi, Mozambique, Namibia,
Nigeria, Réunion, South Africa, Tanzania, Uganda, Zambia, Zimbabwe,
and possibly Burundi. Its natural habitats are subtropical or tropical
dry shrubland, subtropical or tropical moist shrubland, subtropical or
tropical dry lowland grassland, swamps, intermittent freshwater lakes,
intermittent freshwater marshes, and freshwater springs.
With maximum size of 30 mm, wingspan
of 35 mm, it is a small species, all sky blue and black, with no black
marking on abdominal S8, which is all blue. For male, the face is light
blue and black. Labrum light blue with fina black base. Anteclypeus dirty
light blue. Postclypeus black. Fons and genae light blue. Head above with
balck transverse band. A blue line runs across occiput but usually does
not quite reach eyes. Sometimes this line is broken, forming postocular
spots. Eyes light blue with black cap. Cap coincides with black head band.
Prothorax black with fine, broken light blue margins. Synthorax black and
light blue stripes. Sometimes the blue is very light and brownish, and
even occasionally completely brown. Wings clear, pterostigmas dark grey,
almost black, with fine pale margins. Abdomen light blue with a black dorsal
line of varying widths, that ends in a taper at end of S7. S8-S9 above
all blue. S10 blue with fine black stripe above. Superior appendages mostly
blue. Female with similar markings as male but light brown instead of blue.
The species is one of the commonest
species in southern Africa, becoming progressively scarcer in the north
and especially westwards in Africa. Most recordings of the Swamp Bluet
(Africallagma glaucum) have been in locations of 1,200m above sea level
at perennial or temporary waters with submerged aquatic vegetation. This
is a widespread species with no known major widespread threats. It is assessed
by IUCN Red List as Least Concern as it is unlikely to be declining fast
enough to qualify for listing in a threatened category.
Dragonflies and Damselflies of