Variable Sprite (Pseudagrion sjoestedti)

View the above photo record (by John Wilkinson) in OdonataMAP here.

Find the Variable Sprite in the FBIS database (Freshwater Biodiversity Information System) here.

Family Coenagrionidae

Pseudagrion sjoestedtiVARIABLE SPRITE

Identification

Small size

Length up to 36mm; Wingspan attains 48mm.

One of four predominantly ‘red’ sprite species in the region. The others being Pseudagrion massaicum (Masai Sprite), Pseudagrion acaciae (Acacia Sprite) and Pseudagrion vaalense (Vaal Sprite).

Pseudagrion sjoestedti is best told apart from the others by the morphology of the male claspers. However, the distinctive wedge-shaped blue markings on the terminal segments and the broad humeral stripe are also diagnostic.

Females are similar to those of other sprite species and are best identified by their association with the males.

Click here for more details on identification.

Pseudagrion sjoestedti – Male
Near Tzaneen, Limpopo
Photo by John Wilkinson

Habitat

A riverine species, favouring sheltered sites with large overhanging trees, along flowing savanna rivers. Often found in shaded spots with dappled light.

Habitat – Nwanedi Nature Reserve, Limpopo
Photo by John Wilkinson

Behaviour

Perches on emergent and overhanging reeds near the water. Often found in dappled light.

On the wing from September to May (see Phenology below).

Status and Conservation

Uncommon and localised in South Africa. Listed as of Least Concern in the IUCN Red List of Threatened Species.

Distribution

Sparsely distributed throughout much of tropical Africa.

Found only in the Northern parts of South Africa, in the Limpopo and Mpumalanga provinces.

Below is a map showing the distribution of records for Variable Sprite in the OdonataMAP database as at February 2020.

The next map below is an imputed map, produced by an interpolation algorithm, which attempts to generate a full distribution map from the partial information in the map above. This map will be improved by the submission of records to the OdonataMAP section of the Virtual Museum.

Ultimately, we will produce a series of maps for all the odonata species in the region. The current algorithm is a new algorithm. The objective is mainly to produce “smoothed” maps that could go into a field guide for odonata. This basic version of the algorithm (as mapped above) does not make use of “explanatory variables” (e.g. altitude, terrain roughness, presence of freshwater — we will be producing maps that take these variables into account soon). Currently, it only makes use of the OdonataMAP records for the species being mapped, as well as all the other records of all other species. The basic maps are “optimistic” and will generally show ranges to be larger than what they probably are.

These maps use the data in the OdonataMAP section of the Virtual Museum, and also the database assembled by the previous JRS funded project, which was led by Professor Michael Samways and Dr KD Dijkstra.

Phenology

Dragonfly Atlas: Megan Loftie-Eaton, Sally Hofmeyr, Ryan Tippett & Les Underhill
Dragonfly Atlas: Megan Loftie-Eaton, Sally Hofmeyr, Ryan Tippett & Les Underhill
Megan Loftie-Eaton is our communications, social media and citizen science coordinator. Prior to her work for the BDI, she coordinated OdonataMAP, the Atlas of African Odonata. Sally Hofmeyr has many years' experience in the academic world, writing her own material and editing the work of others. Her academic background is in the natural sciences: her PhD and first postdoc in ornithology and environmental change (Animal Demography Unit, University of Cape Town). Ryan Tippett is an enthusiastic contributor to Citizen Science and has added many important and interesting records of fauna and flora. He has been a member of the VMU since 2014 and has currently submitted over 11000 records. He is also on the expert identification panel for the Odonata Map project. Prof Les Underhill has been Director of the Animal Demography Unit (ADU) at the University of Cape Town since it started in 1991. Although citizen science in biology is Les’s passion, his academic background is in mathematical statistics.