Specification of the characters measured (species = Fainia albitarsis (Macquart, 1846)) A head in frontal view showing maximum head width and eye separation width B head in lateral view showing maximum eye height (spotted red line), maximum gena height, pedicel length and postpedicel length and width C palpus in lateral view showing palpus width D upper part of head in frontal view showing frontal vitta width, fronto-orbital plate width and anterior ocellus width E body size in lateral view. Abbreviations: fr vit – frontal vitta; frorb plt – fronto-orbital plate; gn – gena; oc – anterior ocellus; ped – pedicel; plp – palpus; pped – postpedicel.