Hydrellia (Diptera: Ephydridae) mining in Stratiotes aloides: a long history of confusion
Description
Based on collecting records, rearing, examination of type specimens and analysis of published data, this paper discusses which species of the genus Hydrellia (Diptera: Ephydridae) mine in Water Soldier, Stratiotes aloides. Seven species of Hydrellia have been reported as leaf miners of S. aloides in the literature during the last 100 years. All records are very likely to be H. tarsata Haliday, 1839, and three species described from the material reared from S. aloides are considered to be new junior synonyms of H. tarsata: H. stratiotae Hering, 1925, syn. nov., H. stratiotella Wahlgren, 1947, syn. nov., and H. propingua Wahlgren, 1947, syn. nov. Hence, only H. tarsata is known to live in S. aloides. Information on the bionomics and distribution of H. tarsata is reviewed.