Agromyza abiens/myosotidis/lithosperma agg.


The larvae of Agromyza abiens, Agromyza myosotidis and Agromyza lithosperma produce identical mines on the leaves of several larval food plants. The initial narrow gallery contains frass in a double line it then expands to form a blotch mine. Several larvae may occupy a leaf to form a large blotch.The situation is complicated by the fact that the three species share some host plants but not all. Host plants shared by at least two species are: Anchusa, Borago, Cynoglossum, Lithospermum, Myosotis, Pentaglottis, Symphytum. The mines on these plants cannot be reliably separated to species level and for this reason we have created this page which treats them as an aggregate. If the leafmine you are recording is on these host plants, it is necessary to rear the adult and subject it to detailed examination in order to identify it to species level. If this has not taken place you should add your records to this aggregate page.

You can record Agromyza abiens to species level if the mines are on Amsinckia (Fiddleneck), Asperugo (Madwort), Brunnera (Great Forget-me-not), Cerinthe (Honeywort), Echium (Viper's-bugloss), Lappula (Bur Forget-me-not group), Lycopsis (Bugloss), Nonea, Omphalodes (Blue-eyed-Mary), Onosma, Podonosma and Pulmonaria (Lungwort). 

Note: the NBN does not currently have an entry for this aggregate so NBN data cannot be displayed on the distribution maps below.

Similar Species

Agromyza abiens uses Amsinckia, Anchusa, Asperugo, Borago, Brunnera, Cerinthe, Cynoglossum, Echium, Lappula, Lithospermum, Lycopsis, Myosotis, Nonea, Omphalodes, Onosma, Pentaglottis, Podonosma, Pulmonaria, Symphytum.

Agromyza myosotidis uses  Anchusa, Borago, Cynoglossum, Lithospermum, Myosotis, Pentaglottis, Symphytum.

Agromyza lithosperma uses Lithospermum and Myosotis

Identification difficulty

Adult Leafmine (to aggregate level only - may need to be reared through to record at species level - see details provided on our aggregate page).


Where the larval foodplants occur.

When to see it

Mine: late Spring and late Summer.

UK Status

Widespread and believed to be fairly frequent (but under recorded) in Britain.

VC55 Status

Probably fairly frequent but under recorded in Leicestershire and Rutland.

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map