Agnew (1961) described this species as follows: Male imago: The holotype has lost all colour in the alcohol. Turbinate eyes suboval, not contiguous. Basal eyes somewhat projecting laterally and black. Thorax castaneous. Wings clear. Forking of 1A at margin broken, intercalaries double. No cross-veins either before or after bulla, three incomplete veins in pterostigmal area. Hindwing narrow-oval with two parallel veins, no cotal process. Length 5.5 mm, forewing 5.2 mm. Female subimago: in very poor condition. Wings similar to male. Thorax somewhat more robust. Nymph: gills 7 in number, oval, first gill smallest, thereafter becoming larger until the fourth gill. Gills sometimes milky with indistinct tracheation. Strong dentritic tracheation with smaller branches on both sides of the central stem. Posterior borders of abdominal tergites minutely denticulate. Colour pattern of abdomen rarely distinct, when present consisting of four small whitish dots arranged at the corners of a rectangle in the anterior half of the segment. Abdomen somewhat dorsoventrally flattened. Nymphs often colourless and white when preserved, otherwise as overall light reddish brown. Length 8 mm, cercus 4 mm, medium filament 3 mm.

The nymphs of this species most closely resemble those of B. bellus Barnard, but the abdomen is more dorsoventrally flattened and lacks the distinctive colour pattern of B. bellus. The labial palp is somewhat different (Agnew 1961).

Type location: Great Berg River, 'Cape Province' at farm Kersfontein, at head of estuary.

This species appears to be distributed throughout South Africa. It has recently been recorded from Mazoe River, southern Zimbabwe.

This species appears to be distributed throughout South Africa.

Minnow mayfly nymphs are active swimmers or clingers (http://lifeinfreshwater.net/mayfly-nymphs-ephemeroptera/).

Herbivore - Folivore (leaf-eating)

Nymphs are scrapers, with an undetermined number of instars which depends on ambient temperature.

Mayflies undergo incomplete metamorphosis. Their life cycle includes four stages – egg, nymph, subimago and adult (imago). Most species produce one or two generations per year (http://lifeinfreshwater.net/mayfly-nymphs-ephemeroptera/).