Catalogue of the Syrphidae of Egypt (Diptera) Author El-Hawagry, Magdi S. Author Gilbert, Francis text Zootaxa 2019 2019-04-05 4577 2 201 248 journal article 27386 10.11646/zootaxa.4577.2.1 edfb4093-4bf9-40ed-9fb4-bf492ccad12e 1175-5326 2629643 959CC8F8-E214-4A56-9343-CBCC2CBD43DD Eristalis ( Eristalis ) tenax Linnaeus, 1758 Musca tenax Linnaeus, 1758 : 591 . Type locality: Sweden . Conops vulgaris Scopoli, 1763 : 354 . Type locality: Slovenia . Musca porcina De Geer, 1776 : 98. Unjustified new name of tenax . Musca apiformis Geoffroy, 1785 : 488. Type locality: Sweden . Eristalis campestris Meigen, 1822 : 387 . Type locality: Germany & Austria . Eristalis hortorum Meigen, 1822 : 387 . Type locality: Germany . Eristalis sylvaticus Meigen, 1822 : 388 . Type locality: Austria . Eristalis vulpinus Meigen, 1822 : 388 . Type locality: Austria . Eristalis cognatus Wiedemann, 1824 : 37 . Type locality: India ( Tranquebar ). Eristalis sinensis Wiedemann, 1824 : 37 . Type locality: China . Eristalis nili Rondani, 1850: 166 . Type locality: Egypt . Eristalis columbica Macquart, 1855 : 108 . Type locality: Colombia . Eristalis ventralis Thomson, 1869 : 489 . Type locality: China . Eristalis tenax var. alpinus Strobl, 1893 : 185 . Type locality: Austria . Eristalis claripes Abréu, 1924 : 104 . Type locality: Canary Is. Material examined : 1 male , Arish , 6.V.1934 , leg. Shafik ; 1 female , Ismailia , 7.IV.1926 , leg. Tewfik ; 1 female , Wadi Rishrash , 21.VI.1932 , leg. Tewfik ; [EFC]. World distribution : Cosmopolitan, known from all regions except the Antarctic. Egyptian localities : Coastal Strip: Alexandria , Mariout. Eastern Desert: Ismailiya, Wadi Hoff, Wadi Rishrash. Fayoum: Fayoum City, Kom Osheem. Lower Nile Valley & Delta: Cairo , El-Gebel El-Asfar, El-Marg, Embaba, Ezbet El-Nakhl, Kombira, Shubra. Sinai : El-Arish. [Sources: Efflatoun 1922 , Shaumar & Kamal 1978 and the examined museum material]. Activity period in Egypt : Throughout the year. Remarks : E. tenax is the most widely distributed syrphid in Egypt ( Efflatoun 1922 ). Adults fly up to 5m from ground, spending a considerable amount of time resting on flowers and foliage, and in the evenings can be found sunning on the foliage of bushes and shrubs ( Speight 2017 ). A wide range of flowers is visited by this species, including white, yellow, pink and blue blooms ( De Buck, 1990 ). The rat-tailed larvae filter bacteria from water polluted by decaying organic matter, such as sewage treatment ponds ( Aguilera et al . 1999 ).