| ADULT |
Wingspan - 20mm.The smallest of the blue damselflies with the main ID feature being the 'mercury' mark on abdominal segment 2. This mark can be variable with the horn-shapes sometimes detached. On females the shape on segment 2 is thistle-like. Males are a combination of blue and black whereas females are dull green. The pterostigma of both sexes is shorter than found in other Coenagrion species. |
| LARVA |
Small and found in submerged vegetation. |
| BEHAVIOUR |
Never moving far away from chosen area and so struggling to spread to other areas. The flight is low and appearing weak. |
| HABITAT |
Small streams and flushes usually near to heathland and with a rich base content. Water temperature needs to be fairly constant. |
| FLIGHT PERIOD |
May to August. |
| STATUS |
Localised in southern Britain. |
