. The Entomologist's record and journal of variation. larvae are evidently aphidophagous andhave been described and figured by Goeldlin (1974). The extentof pale markings on the legs and face of the adult varies quitemarkedly, as does overall body-shape and size, especially inthe female (assuming ? specimens collected outside the knownrange of P. tibialis in the British Isles can be regarded asbelonging to P. haemorrhousl). The adult flies may be foundat low-growing flowers, such as Potentilla erecta. Generallythey fly close to the ground, in a manner reminiscent tibialis Fal.
. The Entomologist's record and journal of variation. larvae are evidently aphidophagous andhave been described and figured by Goeldlin (1974). The extentof pale markings on the legs and face of the adult varies quitemarkedly, as does overall body-shape and size, especially inthe female (assuming ? specimens collected outside the knownrange of P. tibialis in the British Isles can be regarded asbelonging to P. haemorrhousl). The adult flies may be foundat low-growing flowers, such as Potentilla erecta. Generallythey fly close to the ground, in a manner reminiscent tibialis Fal. The known distribution of this hover-fly in the BritishIsles is anomalous, implying as it does that the species isconfined to two small areas, widely separated and of verydifferent character. The English specimens, collected byHarwood, Wainwright and Yerbury, are from sandy heath-land. The Irish specimens, collected by Coe and Irwin, arefrom low-lying limestone pavement in the Burren of P. haemorrhous may occur in the same localities and.
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