Guardian Nature School Contact Blog Project Noah Facebook Project Noah Twitter

A global citizen science platform
to discover, share and identify wildlife

Join Project Noah!
nature school apple icon

Nature School For Teachers - Fall 2020 Launch! visit nature school

Grass-carrying Wasp

Isodontia sp.


Medium sized, dark wasp with brown fuzz on thorax. These are known for being spotted carrying grass.


Tamarisk next to small lake.


"The adult wasps emerge from their cocoons in early summer, mate, and the females locate a suitable nest site. She collects blades of grass and grass and hay stems to line the nest cavity. The wasp can be seen flying through the air with the blades trailing beneath her. She lands at the hole and enters, pulling the blade in behind her. After the nest is prepared, she hunts for tree crickets (i.e., Oecanthus sp.), captures and paralyses them with her sting, and transports them to the nest. She deposits eggs in the nest and the emerging larvae will feed on the living, but immobile crickets. When the larvae reach the appropriate size (in 4–6 days at 70–75° F.), they spin a cocoon and pupate. The adult wasps emerge in 2–3 weeks." - PennState

Species ID Suggestions

Sign in to suggest organism ID

No Comments

Escondido, California, USA

Spotted on Jun 20, 2012
Submitted on Jun 21, 2012

Related Spottings

Grass-carrying wasp Grass-carrying Wasp grass carrying wasp Stylopized Sphecid

Nearby Spottings

Cocoon Spotting Great Blue Heron Tamarisk
Noah Guardians
Noah Sponsors