Pests on Buttercup (Ranunculus): Beetle and Leaf-Footed Bug Identified

Two distinct insects on your buttercup plants:

1. White Beetles (Photo 1)

Likely a root weevil (Otiorhynchus spp.) adult—nocturnal, notch leaves, larvae feed on roots. Species ID needs a clearer photo or specimen. Check for notched leaf margins.

2. Brown Bug with White Stripe (Photo 2)

Confirmed leaf-footed bug (Coreidae: Leptoglossus spp.) — plant-feeder, not a major buttercup pest. See UC IPM: ipm.ucdavis.edu.

Management

• Root weevils: Beneficial nematodes (Steinernema carpocapsae) applied to soil in spring/fall target larvae. Hand-pick adults at night with a flashlight. Tanglefoot on stems blocks climbing.
• Leaf-footed bugs: Usually minor. Hand-pick or spray with insecticidal soap if numerous.
• Post a photo of the damage (chewed leaves, root condition) for more specific advice.

Both are manageable without broad-spectrum insecticides.