The inside cover picture shows a scheme of a sawfly larva of Athalia rosae, which sequesters glucosinolates from the diet in its haemolymph and further metabolises them. After desulfation, the desulfoglucosinolate is sulfated to desulfoglucosinolate-3-sulfate and excreted. In the gut, glucosinolate is likewise sulfated and excreted. For further details, see the paper by C. Müller et al. on p. 1252 ff.