Dichoptic males of Syrphus (Dasysyrphus) venustus Mg. and review of cases described as gynandromorphs, intersexes etc. in Syrphidae (Diptera)

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith