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CALTHA. Kingcup or Marsh Marigold [Ranunculaceae]

Kingcup or Marsh Marigold (C. palustris) is the only species of Caltha recorded in Britain. Is is a native species. Two dipterous miners, the agromyzids Phytomyza calthivora and Phytomyza calthophila, are recorded on Caltha in Britain. Elsewhere the agromyzids Phytomyza calthivora, Phytomyza calthophila, Phytomyza soenderupi and the sciarid Phytosciara halterata are recorded mining Caltha. No non-dipterous miners are recorded on Caltha in Britain.

Marsh-marigold - Caltha palustris

Key for the identification of the known Diptera mines on Caltha in Great Britain and Ireland.

1> Mine linear but becoming very broad, up to 5mm, greenish, normally on lower leaves, near water. Puparium black Phytomyza calthivora Hendel [Agromyzidae]. ->A long, narrow, upper surface mine. Pupation external. Puparium brown Phytomyza calthophila Hering [Agromyzidae].

Last updated 13-Dec-2008  Brian Pitkin

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