Callicera
Introduction '''''Callicera''''' is a Holarctic genus of hoverfliesMedium-sized to rather large (wing length 9·75–15 mm.) bumblebee mimics. They are beautiful metallic flies, with strikingly long antennae. All the species are considered rare. ''Callicera'' larvae live in water rot-holes of overmature trees as saprophages. They occur mainly in ancient forests where they are arboreal. ''Callicera'' have been used as bioindicators.
Species *''C. aenea'' (Fabricius, 1781)*''C. aurata'' (Rossi, 1790)* ''C.christiani''  (Ghorpade, 1982)* ''C.doleschalli'' (Verrall, 1913)*''C. duncani'' Curran, 1935*''C. erratica'' (Walker, 1849)*''C. exigua'' Smit, 2014*''C. fagesii'' Guérin-Menéville, 1844*''C. macquarti'' Rondani, 1844*''C. montensis'' Snow, 1892* ''C. nitens'' (Coe, 1964)* ''C.poultoni'' (Verrall, 1913)* ''C.robusta'' (Coe, 1964)*''C. rohdendorfi'' Zimina, 1982*''C. rufa'' Schummel, 1842* ''C.sackeni'' (Verrall, 1913)*''C. scintilla'' Smit, 2014*''C. spinolae'' Rondani, 1844*''C. sumatrensis'' (Meijere, 1919)
References
External images  Images representing ''Callicera''