Squash Vine Borer
Melittia cucurbitae
Images Copyright 2001, David L. Green Use without permission prohibited
June 10, 15, 2001 Hemingway, South Carolina USA

Split stem showing larva in center

Main stem of summer squash, showing insect frass (droppings), which often are the first
sign of infestation

Another symptom is suddenly dying plants
Fact Sheet from Ohio State
Kentucky: Squash
Vine Borers and Bugs