Trunk beetle

Description:

Cerambycidae: Lamiinae: Acanthoderini; Also known as yellow harlequin, trunk drill, small harlequin.

Habitat:

In citriculture, this pest attacks only the trunks. It can be found in other crops such as avocado, blackberry, fig, peach and in forest essences.

Notes:

I guess I need to watch my lemon tree more closely...