Behavioural and gustatory responses of female Neobellieria (=Sarcophaga) bullata to sucrose and amino acids

. Unmated female Neobellieria (=Sarcophaga) bullata (Parker) (Diptera: Sarcophagidae) of different ages ranging from 1 to 24 days consistently preferred a solution of 100 mM/1 sucrose to one containing a mixture of six amino acids at a total concentration of 10 mM/1. When these solutions were used to stimulate the gustatory sensilla on the proboscis of 2‐ and 5‐day‐old flies, sucrose elicited a greater response from cells 1 and 2 in large and cell 1 in medium‐length hairs, which could account for the feeding preference of the flies for this chemical.