A character that is common to (virtually) all members of a group and that in itself, or in combination with other diagnostic characters, is unique to that group. For example: empodia pulviliform; branches of R crowded on costal margin; wing often with fine longitudinal wrinkles are all diagnostic characters for the taxon Stratiomyidae. Compare with differential character.
I have just received the very sad news that Peter Chandler has died after a fall at home yesterday. I have no other details at the moment. We shall miss him terribly.
Anyone have scans of the Genus Semaranga in:
1)Kanmiya, K. (1983) A systematic study of the Japanese Chloropidae (Diptera).
2) Andersson, H. (1977 Taxonomic and Phylogenetic studies on Chloropid
Dr Michael von Tschirnhaus, a leading expert on Chloropidae and Agromyzidae, died on 16 September 2025 at the age of 86. He will be greatly missed by the international community. R.I.P.
Anyone has the scan of "Harkness, R. D.; Ismay, J. W. 1976: A new species of Trachysiphonella (Dipt., Chloropidae) from Greece, associated with an ant Cataglyphis bicolor (F.) (Hym., Formicidae)