Caused by a midge. · 7/27/2013 · Oak Hill, Littleton Conservation Land, Littleton, Massachusetts · ≈ 7 × 10″ (16 × 25 cm) ID is uncertain
Polystepha pilulae description by Thomas H. Kent, last updated 28 Sep 2023.
Caused by a midge. · 7/27/2013 · Oak Hill, Littleton Conservation Land, Littleton, Massachusetts · ≈ 7 × 10″ (16 × 25 cm) ID is uncertain