Thread subject: Diptera.info :: Identification needed ...

Posted by von Tschirnhaus on 19-08-2022 18:22
#6

dear Andreas,
there are so many exceptions to the worldwide published definitions for Chloropidae (3.054 valid spp). Long orbitals exist in several genera and in all Siphonellopsinae. Ocellar triangles may occupy the whole frons (e.g. Collessimyia nigricornis) or may be absent at all, there may be four long dorsocentrals and tiny flies (Alombus) without wings and halters. But all world Chloropidae possess a sharp edge on the propleuron, running from the fore-coxa upwards to the "humeral-callus", also Eribolus. Remove the head and you will detect this peculiar apomorphy (detected by Malloch) under high illumination.