The Dacnusini (Hymenoptera: Braconidae) parasitoids of Agromyzidae (Diptera) feeding on Equisetum L. (Equisetaceae)

Abstract

Several species of Liriomyza (Agromyzidae) feed in stems and leaves of Equisetum (Equisetaceae) but only one, L. virgo (Zetterstedt), is known to be parasitised by Dacnusini wasps. Chorebus glabriculus (Thomson), a species whose biology was hitherto unknown, was reared from L. virgo in the north of England. This is the third apparently specialist Dacnusini to be reared from this host and an illustrated key is provided to tell them apart with notes on non-Dacnusini parasitoids of Equisetum-feeding agromyzids.