Insect of the Week – Rove beetle

This week’s Insect of the Week is the Rove Beetle (Delia spp.). This beetle feeds on aphids, mites, eggs and larvae of many other insects present under plant debris, rocks, stones, carrion, dung, and other materials. It is also an important natural enemy of the pea leaf weevil. One species of the rove beetle, Aleochara bilineata, is an important natural enemy of cabbage, seedcorn, onion and turnip maggots.

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For more information on the Rove Beetle, see our Insect of the Week page.

Rove beetle – adult (Tyler Wist, AAFC)
Remember the NEW Cutworm Field Guide is free and downloadable in 2017!

Insect of the Week – Rove beetle

Rove Beetle (predator and parasitoid)

Last year, the focus of the Insect of the Week was crop pests. This year, we’re changing things up and highlighting the many natural enemies that help you out, silently and efficiently killing off crop pests. [note: featured Insects of the Week in 2015 are available on the Insect of the Week page] 

This week’s Insect of the Week is the rove beetle (Delia spp.), is a generalist predator. The adult feeds on aphids, mites and larvae of many species under plant debris, rocks, dead animals, dung and other materials. The rove beetle larvae have similar hosts as the adult; the larvae of Aleochara spp parasitize various fly species including cabbage root maggot.

For more information about rove beetle, the pests it controls and other important crop and forage insects, see the new Field Crop and Forage Pests and their Natural Enemies in Western Canada – Identification and Management Field Guide for identification, life cycle and conservation options (download links for field guide available on the Insect of the Week page).

Adult rove beetle. (c) AAFC-Tyler Wist