Thread subject: Diptera.info :: Chrysotoxum cautum? --> Chrysotoxum cf. verralli
Posted by HTK on 07-07-2022 21:01
thank you very much for your helpful comments. It's certainly no coincidence that Ball and Morris speak of the "difficult five" with the two species under discussion among them.
Edited by HTK on 07-07-2022 21:02