The leaf and stem mines of British flies and other insects

(Coleoptera, Diptera, Hymenoptera and Lepidoptera)

by Brian Pitkin, Willem Ellis, Colin Plant and Rob Edmunds


Phytomyza nigritula Zetterstedt, 1838
[Diptera: Agromyzidae]

Phytomyza nigritula Zetterstedt, 1838. Insecta Lapponica: 793
Phytomyza cineracea Hendel, 1920. Arch. Naturgesch. 84A(7) (1918): 166
Phytomyza cineracea Hendel, 1920; Hendel, 1935. Fliegen palaearkt. Reg. 6(2): 376
Phytomyza nigrigenis Hering, 1937b. Mitt. dt. ent. Ges. 8(6-7): 76. [Synonymised by Spencer, 1976: 341]
Phytomyza cineracea Hendel, 1920; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 71, 81, 95
Napomyza nigritula (Zetterstedt, 1828); Spencer, 1976. Fauna ent. Scand. 5(1): 341-3, figs 622-3.
Napomyza nigritula (Zetterstedt, 1828); Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 21, 38, 39 (fig. 129), 50
Phytomyza nigritula Zetterstedt, 1838; Zlobin, 1994. Dipterological Research 5: PAGE.

Stem-borer: Larva feeding as internal stem-borer (Spencer, 1972b: 95, as Phytomyza cineracea).

Larva: The larvae of flies are leg-less maggots without a head capsule (see examples). They never have thoracic or abdominal legs. They do not have chewing mouthparts, although they do have a characteristic cephalo-pharyngeal skeleton (see examples), usually visible internally through the body wall.

Puparium: The puparia of flies are formed within the hardened last larval skin or puparium and as a result sheaths enclosing head appendages, wings and legs are not visible externally (see examples).

Elongate, slightly tapering, pale brown; posterior spiracles scarcely raised, each with an ellipse of 16-25 bulbs (Spencer, 1976: 342).

Hosts in Great Britain and Ireland:

Ranunculus       Pitkin & Plant, as Napomyza
Ranunculus acris Meadow Buttercup British Wild Flowers by John Somerville et al. Spencer, 1972b: 118, as cineracea
Ranunculus lanuginosus Wooly Buttercup   Spencer, 1972b: 119, as cineracea
Ranunculus repens Creeping Buttercup British Wild Flowers by John Somerville et al. Spencer, 1972b: 119, as cineracea

Hosts elsewhere:

Ranunculus       Spencer, 1976: 342
Ranunculus       Spencer, 1990: 21
Ranunculus flammula Lesser Spearwort British Wild Flowers by John Somerville et al. Spencer, 1976: 342

Time of year - mines: Currently unknown.

Time of year - adults: Currently unknown.

Distribution in Great Britain and Ireland: Widespread. Berkshire (Newbury), Wiltshire (Gastard), Lincoln (Crowland), Inverness (Aviemore) and Perth (Fontingall) (Spencer, 1972b: 91, as cineracea); East Suffolk (NBN Atlas).

Distribution elsewhere: Widespread in continental Europe including Denmark, Sweden, Norway, Finland, France, Iceland (Spencer, 1976: 342), Germany (Spencer, 1976: 566), Austria, Belarus, Czech Republic, Estonia, Lithuania, Poland and Switzerland (Fauna Europaea).

Also recorded in Canada (Spencer, 1976: 342).

NBN Atlas links to known host species:

Ranunculus acris, Ranunculus flammula, Ranunculus repens

British and Irish Parasitoids in Britain and elsewhere:

Pachyneuron muscarum (Linnaeus, 1758) Pteromalidae: Pteromalinae
Stenomalina gracilis (Walker, 1834) Pteromalidae: Pteromalinae
Ichneumonoidea - Links to species no longer available  
Opius pendulus Haliday, 1837 Braconidae: Opiinae

External links: Search the internet:
Biodiversity Heritage Library
Bladmineerders van Europa
British leafminers
Encyclopedia of Life
Fauna Europaea
NBN Atlas
NHM UK Checklist
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