I si possible to analyse insecticide residues in several compartiments of insect (hemolymph but also fat body and ovaries). Plesae find attached publications dealing with your research. I think you can find useffull informations on extraction and conditions of analysis by HPLC.
Yes it is . The same procedure used in animal and human blood analysis is suitable for analysing the pesticides residues. HPLC GOT special COLUMN for such analysis