Stem-borer: Internal stem-borer. Pupation internal (Spencer, 1972: 20).

Larva: The larva is described by Dempewolf (2001: 86).

Puparium: Whitish grey; posterior spiracles adjoining, each process with 16-22 bulbs around the strong central horn (Spencer, 1972: 20).

Hosts in Britain:

Hosts elsewhere:

Time of year - larvae: Unknown.

Time of year - adults: Unknown..

Distribution in Great Britain and Ireland: Middlesex (Scratch Wood), Buckinghamshire (Sarratt), Hertfordshire (Barnet), Denbighshire (Cefn-y-bedd) and Dunbarton (Bonhill) (Spencer, 1972: 20); Cambridgeshire, Cheshire, Denbighshire, Flintshire ans Surrey (NBN Gateway - N.B. includes Watsonian Vice Counties having publicly available records that fall within or overlap the vice county border at 10km resolution or better i.e. a record for a vice county may relate to an adjacent vice county - for included datasets see NBN Grid map below).

NBN Grid map: Note that not all datasets on the NBN Gateway may be available on the map below. If you are an NBN Gateway registered user you can request access for missing datasets via the link 'Open interactive map in new window' below.

Distribution elsewhere: Common and Widespread in continental Europe including Denmark, Finland (Spencer, 1976: 52) and Germany (Spencer, 1976: 542; Dempewolf (2001: 86), Azores, Czech Republic, Estonia, French mainland, Hungary, Lithuania, Poland, Romania, Spanish mainland, Sweden, Switzerland and The Netherlands (Martinez in Fauna Europaea).

Also extending eastwards to the [former] U.S.S.R. (Spencer, 1976: 52).

NBN interactive distribution map(s) of known host species in Great Britain and Ireland and elsewhere:

Parasitoids in Britain and elsewhere: Unknown.