Harmostes reflexulus is a species of scentless plant bug in the family Rhopalidae.

[1][2][3][4] Harmostes reflexulus are small bugs.

[5] Harmostes reflexulus are most commonly found on herbs and flowers in fields.

[3] Host plants include Senecio plattensis, Achillea millefolium and Erigeron strigosus.

The insects will feed on the petioles and flowers of these plants.