shore bug

noun
  1. any of various small, predaceous hemipterous insects of the family Saldidae, some of which are burrowers, commonly occurring along grassy shores of ponds, streams, brackish lakes, and seacoasts.

Origin of shore bug

An Americanism dating back to 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018