Entoma
Ruddy darter, Sympetrum sanguineum, plate

Skimmers

Sympetrum sanguineum

Ruddy darter

Males often bask with their wings angled down rather than held flat, an unusual posture that helps separate them from other darters at a glance.

WherePonds, ditches and marshes with reeds
Size34 to 36 mm body length
WhenJune to September

Males have a blood red, slightly club-shaped abdomen and entirely black legs; females and young males are ochre yellow with black markings.

Larvae develop in still, often weedy ponds and ditches, and adults spend much of the day perched on waterside reeds and rushes rather than flying far.

Traits

Habitat

Wetland

Colour

Red, Black, Yellow

Active

Day

To people

Harmless; does not sting or bite

Activity through the year

Often confused with

Common darterOpen entry ›
Sympetrum striolatum

Common darter has yellow stripes on the legs and a less club-shaped abdomen, while the ruddy darter's legs are entirely black.

Questions

Is the Ruddy darter dangerous to people?

Harmless; does not sting or bite.

When can you see the Ruddy darter?

The Ruddy darter can be seen from June to September, by day.

Plate retouched from a photo by gailhampshire from Cradley, Malvern, U.K, CC BY 2.0, Wikimedia Commons Licence

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Dragonflies and damselflies›Skimmers›Sympetrum

Last updated 2026-09-26. Every entry is checked against published sources.