Stem-feeder : Larvae normally feed in stems but have been found in the inflorescence (Spencer, 1972: 68).

Larva: The larva is described by Dempewolf (2001: 179).

Puparium: Yellowish, elongate; posterior spiracles each with some 10 bulbs (without central horn).

Comments: Spencer (1990) accepts a Napomyza species on Linum as representing lateralis. However, more detailed studies may show that this population represents a distinct species.

Hosts in Britain:

Hosts elsewhere:

Time of year - larvae: Unknown.

TIme of year - adults: Unknown.

Distribution in Great Britain and Ireland: Widespread and common. Surrey (Richmond), London (Hampstead), Hertfordshire (Brookman's Park), Inverness (Inverness) (Spencer, 1972: 68); Cambridgeshire, Denbighshire, East Cornwall, East Kent, East Sussex, Huntingdonshire, Middlesex, Monmouthshire, North Hampshire, Pembrokeshire, Shropshire, South Essex, Surrey and West Kent (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).

Also recorded in the Republic of Ireland (Martinez in Fauna Europaea).

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 throughout much of Europe including Denmark, Finland, Norway, Sweden (Spencer, 1976: 340), Germany (Spencer, 1976: 566; Dempewolf, 2001: 179; Spencer, 1990: 150), Austria, Azores, Belarus, Belgium, Canary Is., Czech Republic, Estonia, European Turkey, French mainland, Hungary, Italian mainland, Latvia, Lithuania, Madeira, Poland, Sicily, Spanish mainland, Switzerland and Yugoslavia (Martinez in Fauna Europaea).

Also recorded in Japan and Canada (Spencer, 1976: 340).

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

Parasitoids in Britain and elsewhere:

Adult:

Wing of Napomyza lateralis