Peak Bluet (Africallagma sinuatum)

View the above photo record (by Alf Taylor) in OdonataMAP here.

Find the Peak Bluet in the FBIS database (Freshwater Biodiversity Information System) here.

Family Coenagrionidae

Africallagma sinuatumPEAK BLUET

Identification

Small size

Length up to 36mm; Wingspan attains 37mm.

The most elongate Bluet in the region. The very long slender abdomen and distinctive clasper shape should rule out any confusion with other species.

Similar to the Slender Bluet (Africallagma fractum). The Peak Bluet is more elongate, has a greenish hue on the upper thorax and has distinctively shaped claspers.

Click here for more details on identification.

Africallagma sinuatum – Male
Monk’s Cowl, KwaZulu-Natal
Photo by Evert Kleynhans

Habitat

A species of grasslands in open, mountainous regions with a high rainfall. Inhabits the grassy fringes of seeps and streams. Mostly found between 1000 to 2000m. a.s.l.

Behaviour

Perches on grass stems over the water, less often seen sitting on rocks.

On the wing from September to March

Status and Conservation

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

Distribution

Africallagma sinuatum has a disjunct distribution in SE Africa and is found in the Democratic Republic of the Congo, Ethiopia, Malawi, South Africa, Tanzania, Zambia, and Zimbabwe.

Below is a map showing the distribution of records for Peak Bluet 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.