Mayetiola avenae (Marchal, 1895)
The locally swollen culm has, just above a node, one or more shallow oval depressions. They are not covered by the epidermis, but generally lie within a leaf sheath. In each a single pale greenish white, 3-5 mm long larva is found. Pupation within the gall; the puparia are brown.
The larva is described by Ertel (1975a).
Avena fatua, sativa.
Buhr (1964b), Dauphin & Aniotsbehere (1997a), Ertel (1975a), Gagné (2010a), Houard (1908a), Redfern & Shirley (2011a), Skuhravá & Skuhravý (1994a, 1999a), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý & Ebejer (2002a), Skuhravá, Skuhravý & Kettani (2017a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a), Tomasi (2014a).