Darkling beetles are back, marching north across Tri-Cities sidewalks and roadways, particularly in places where residential neighborhoods meet undeveloped land in south Kennewick and Richland.
Each year in late summer the bugs show up, and there may be more of them than usual this year.
Insect activity may be high now because of the lack of long cold spells last winter that would have killed off bugs, followed by a hot summer, said Stacey Abney, a Washington State University Extension master gardener…