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UMBILICUS. Navelwort or Wall Pennywort. [Crassulaceae]
Only one species of Umbilicus is recorded in Britain - Navelwort (U. rupestris). It is a native species. Only one dipterous miner, the syrphid Cheilosia semifasciata, is recorded on Umbilicus in Britain and elsewhere. One non-dipterous leaf-miner is recorded on Umbilicus in Britain (see below).	Navelwort or Wall Pennywort - Umbilicus rupestris.

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

1> Full depth mine; in parts of the mine the parenchyma remain untouched. The larva enters and exits the leaf by means of an oval opening of 3-5 mm at the base, near the leaf edge. Pupation external. Mine of Cheilosia semifasciata on Sedum telephium. Image: Willem Ellis (Source: Nederlandse bladmineerders) Cheilosia semifasciata Becker [Syrphidae].

Non-dipterous miners recorded on Umbilicus in Britain Cnephasia conspersana Douglas, 1846 Lepidoptera: Tortricidae

Last updated 29-Jul-2008  Brian Pitkin

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