Amateur
Entomologists'
Society

Gaster

Hymenoptera are characteristed by a thin 'waist' between the thorax and the abdomen. Following the thin waist the abdomen gets thicker and this region is called the Gaster.

A photograph of the Spider-hunting Wasp (_Auplopus carbonarius_) with its prey.

The Spider-hunting Wasp (Auplopus carbonarius) with its prey. The thin waist and gaster, distinctive of Hymenoptera, are clearly visible.
Photograph by Fritz Geller-Grimm licensed under Creative Commons.

Related terms

Related groups of terms

Related pages on this web site

See other words beginning with G

Browse terms by A-Z

Back to Glossary

If you have found this glossary useful please consider supporting the Amateur Entomologists' Society by becoming a member or making a donation.