52a (44b). Mouthparts usually withdrawn into head and not obvious; abdomen with stylelike

appendages on some segments or with a forked appendage near end of abdomen; usually

<7 mm long....................................................................................................…................….....................53

52b. Mouthparts usually distinct, mandibulate or haustellate (= for sucking); abdomen without

appendages as described previously; size variable...................................................…….........…........54