Re: Pherbellia grisescens synonymy
Had this report in from Patrick Roper, our county Diptera recorder:
The RECORDER dictionary treats the Sciomyzid flies Pherbellia grisescens and Ditaeniella grisescens as separate species and there are therefore two maps available via the NBN Gateway showing quite different distributions for each.
According to the checklist of the Diptera of the British Isles by Peter Chandler (1998) Pherbellia grisescens was placed in the genus Ditaeniella by Roskosny in 1987 and this was accepted by Vala in 1989. Unless there has been a further taxonomic change since Chandler (1998) Pherbellia grisescens should, surely, synonymise automatically to Ditaeniella grisescens. Also the Pherbellia grisescens synonym for Ditaeniella grisescens should be shown in the information panel on the latter species in RECORDER.
From this it looks like Pherbellia grisescens is not linked to Ditaeniella grisescens in the dictionary.
Digital Development Manager | Field Studies Council
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