Mauve Bluet. Persbloutjie.
Family Coenagrionidae Kirby, 1890
- Proischnura polychromatica (Barnard, 1937)
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Key identification features:
- Face mauve and black. Labrum is mauve with three black dots. Postclypeus is mauve with black basal band. Frons is mauve. Head dark bronze green from above, bluish mauve wedge-shaped postocular spots connected by fine mauve line.
- Eyes are dark grey above, light grey below.
- Neck is dark bronze green with mauve dots.
- Thorax is dark bronze green almost blackish with broad mauve bluish mauve or purple stripes above. The sides mauve to purple merging into buff below.
- Wings clear with fairly rounded tips. Pterostigmas are dark brown.
- Abdomen is light brown with bronze green blackish stripe along top of segments 1 to 7. Segments 8 and 9 each have shield-shaped blue markings that become purple with age. Segment 10 bronze green.
Female has similar patterning as male, but the mauve is replaced by light brown, only segment 9 with small dark blue oval spot.
Compared with other species:
The Mauve Bluet is unmistakable due to the move colour. Female has a distinct pattern on S7-10
Distribution and habitat:
- Endemic to the WCP and ECP of South Africa.
- Extremely rare and threatened with records from above Ceres, Seweweekspoort, and Franschhoek Pass in the Western Cape Province of South Africa. Recently found in the Knysna area ECP
- Prefers Standing and temporary waters, but also streams, in open landscapes. Especially pools in streams that slow or stop flowing in summer, usually with emergent and often aquatic vegetation. Inferred to occur from 300 to 800 m above sea level, but possibly up to 1400.
- Perch among the grass stems and is usually only seen when disturbed.