Dryudella pinguis



Conservation status

Not Assessed

Species Biology


  • Body length: 6-8mm
  • Head and thorax black, abdomen partially red with a black tip
  • Male with large eyes which touch at the top of the head
  • Male with small white spots on the face
  • Females in particular could be confused with other species such as Tachysphex pompiliformis. The use of a microscope and specialist keys are necessary for reliable identification in most cases


Bare sandy areas, such as coastal dunes and sandy heathland on the eastern coast.

Flight period

In Ireland it is known from June and July. It possibly flies from May-August as it does in Britain.

Nesting biology

This species nests solitarily in bare sandy slopes with a sheltered, sunny aspect. The female constructs a burrow in which she digs several cells. Each cell is provisioned with nymphs of several species of true bugs (Heteroptera) and an egg is then laid. The wasp larvae will emerge from the egg and feed on the bug nymphs before pupating and emerging as an adult the following year. 

Flowers visited

This species has not been observed on flowers in Ireland.

Native region

Europe, North America, Temperate Asia

Similar species

  • Tachysphex pompiliformis (see above)


World distribution(GBIF)

Temporal change

Records submitted to Data Centre in 2023

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How can you help

This species is under-recorded in Ireland. Surveying suitable sandy locations would be beneficial for establishing trends in the distribution and abundance of this species.



Stelfox, A. W. (1924). A List of the Hymenoptera Aculeata (Sensu Lato) of Ireland. Proceedings of the Royal Irish Academy. Section B: Biological, Geological, and Chemical Science37, 201–vi.