The mouth‐parts of the Yellow Dung‐fly, Scopeuma (=Scatophaga) stercoraria (L.) (Diptera, Cordyluridae)

The mouth‐parts of the Dance Fly, Empis livida L. (Diptera, Empididae)

“…The techniques previously described (Bletchly, 1953) were found to be satisfactory. TIIE MOUTH-PARTS OF EMPIS LIVIUA L.…”

“…The structure of the compound apodemal rods is peculiar. The apodemal rods may correspond to the paraphyses of Scopeuma stercoraria (Bletchly, 1953) and the apodemes to the apodemes of S. stercoraria and cardo and stipes of E. livida. Comparison of the muscles strengthens this view and suggests possible homology.…”

“…Superficial studies of the mouth-parts of Empididae have been made by Peterson (1916) and others, but no attempt was made to discover morphological adaptations to the known predatory feeding habits. This investigation provided the opportunity of making comparisons with the mouth-parts of species of the families Cordyluridae (Bletchly, 1953) and Tacliinidae (Graham-Smith, 1930), and, for this reason, a similar terminology has been employed in this paper. owing to the difficulties encountered in describing markedly opisthognathous mouth-parts, the terms " dorsal " and " ventral " have been used on occasion in place of the more strictly accurate anterior and posterior, to facilitate explanation of some of the drawings.…”