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SILAUM. Pepper-saxifrage. [Apiaceae]

Only one species of Silaum is recorded in Britain, the introduced Pepper-saxifrage (S. silaus). Only one dipterous miners, the agromyzid Phytomyza silai, is recorded on Silaum in Britain, although there is an unconfirmed record of Phytomyza sedicola on Silaum. The agromyzid Melanagromyza nibletti bores the stems of Silaum in southern England elsewhere. Elsewhere the agromyzid Phytomyza silai is recorded mining Silaum. No non-dipterous miners are recorded on Silaum in Britain.

Key for the identification of the known Diptera mines in Britain.

1> Larva mining initially on lower surface of leaf, later filling the tip of the leaf on the upper surface with a linear blotch mine. Puparium black Phytomyza silai Hering [Agromyzidae]. ->A linear mine rigidly following the margin of the leaf segment. Puparium black, shining Mine of Phytomyza adjuncta on Pimpinella saxifraga. Image: Willem Ellis (Source: Nederlandse bladmineerders) Phytomyza adjuncta Hering [Agromyzidae].

Last updated 30-Jul-2008  Brian Pitkin

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