Seed-feeder: Larvae feeding in seed-heads. Pupation external (Spencer, 1976: 512).

Larva: Details unknown.

Puparium: Brownish; posterior spiracles enlarged, each with about 45 bulbs.

Comments: Phytomyza tenella is treated as a junior synonym of Chromatomyia asteris in Bladmineerders van Europa.

Hosts in Britain:

Hosts elsewhere:

Time of year - larvae: August.

Time of year - adults: June the following year.

Distribution in Great Britain and Ireland: Inverness (Loch Pityoulish), Elgin (Culbin Sands) (Spencer, 1972: 85), Inner Hebrides (Isle of Coll) (Bland, 1992) and North-east Yorkshire (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: Co. Clare (Burren) (Spencer, 1972: 85).

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: Widespread in continental Europe including Denmark, Finland, Norway, Sweden (Spencer, 1976: 512), Germany (Spencer, 1976: 578), Azores, Belgium, Canary Is., Estonia, Faroe Is., French mainland, Hungary, Italian mainland, Lithuania, Madeira, Poland, Spanish mainland and Switzerland (Martinez in Fauna Europaea).

Also recorded in Canada (Spencer, 1976: 512).

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

Parasitoids in Britain and elsewhere: Unknown.

Biodiversity Heritage Library
Bladmineerders van Europa
British leafminers
Encyclopedia of Life
Fauna Europaea [127882]
NBN Gateway