On Tylenchus agrostis (Steinbuch 1799).

Abstract

Galls, in the inflorescences of various species of grasses, caused by nematodes have been known since Steinbuch first described them, in 1799, in the flowers of Agrostis capillaris and Phalaris phleoides. Since that time they have been found in several other species of grasses and have been studied principally by entomologists interested in galls caused by insects. The causative organisms have received but little serious attention from helminthologists in recent years.