Species Account for Pherbellia schoenherri
Pherbellia schoenherri (Fallén, 1826)
Diptera: other groups: Sciomyzidae
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Essex RDB: Listed
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Taxonomic group: flies (other) (Diptera: other groups) - County data
Essex Red Data List comment
Genuinely uncommon, records from Great Sampford and Hatfield Forest.
This small snail killing fly with prominently spotted wings is widely distributed and not uncommon, but never numerous. There are only two other Essex records. Adults are found in the marginal vegetation of ponds and ditches, especially in fens and levels marshes. Eggs are laid on the shells of Succinea sp and the larvae develop as specialised internal parasitoids. Only one larvae can complete development in each host. References