saarmullerAdvancing our knowledge of #insects and in this case beeflies by #photofun : two pairing beeflies. A big darker one and a lighter small one. @markmccaughrean #bugoftheday #allotment
Mark McCaughrean@saarmuller Ooerr, vicar!
@markmccaughrean Trying to find out more this is a contradictory observation. Males are supposed to be larger, but the main criterion is the eye positioning. Separate in females, close together in males. Which means that the big one in this case is the female?!
@saarmuller Interesting – females of many species are often larger, but with bee flies, I have no idea.
BTW, I saw a very small one this afternoon on the Königstuhl, perhaps a different species, but it flew off before I could get a picture.
@markmccaughrean We need more observations, and many more photos!