Dysdercus intermedius

The a-D-glucosidase activities in extracts of antennal segments and in the haemolymph of the cotton stainer (Dysdercus intermedius) have been measured quantitatively using aa-trehalose, 4-nitrophenyl a-D-glucopyranoside, sucrose, turanose, maltose, isomaltose, and palatinose as substrates. Three active species were isolated by gel filtration from the segments, but only two from the haemolymph. The results of the isolation were discussed with reference to the hypothesized presence of sugar reception processes in insect gustatory cells. 

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