Identification of billbugs (Sphenophorus spp.)

The billbugs in the genus Sphenophorus are common pests of turfgrasses, with about 100 species found around the globe. Many species are similar, and can be difficult to distinguish from each other. This project brings together guides to assist in the identification of species of Sphenophorus. Although presently limited to only distinguishing between the two species S. cicatristriatus and S. parvulus, I hope to add additional guides as they are prepared. Version 1 of Distinguishing between S. cic...