Eristalinus (Lathyrophthalmus) aeruginosus (Collin, 1949)
Eristalis aeruginosus Collin, 1949: 196 . Type species: Egypt (Western Desert [as Libyan Desert]: Siwa Oasis, El-Khamsa [as Khamissa]).
World distribution: PA: Egypt.
Egyptian localities: Western Desert: El-Khamsa, Siwa Oasis [Collin 1949].
Activity period in Egypt: April to August.
Remarks: This species was described from Egypt in 1949, but has not been found again.