Fact Sheet No. 202, UMaine Extension No. 2373 Prepared by Francis A. Drummond, Professor of Entomology and Judith A. Collins, Assistant Scientist, and in cooperation with David Yarborough, Extension Blueberry Specialist, The University of Maine, Orono, ME 04469. Revised December 2012 Description Thrips are very small (1/8 to 1/4-inch long) and difficult to see.  Uncurling