Pseudagrion sudanicum (Blue-sided Sprite)

I have just the single specimen from Zambia, 2022.

Apparently this species is sparse in South Africa. The book says it’s “unmistakable” with chocolate-coloured eyes and bright blue postocular spots. The upper thorax supposedly varies with age but the chocolatey colour here looks good, too. A blue thorax side with a 2-segment blue tail light.