67a (66b).    Ocelli, 7 or more, on each side of head; prolegs on segments
1-8 or 3-8, usually faint
                   pointed structures (Fig.A) [scorpionfly larvae].................................................................Mecoptera
 
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                                                    A
 
 
67b.    Ocellus (one) on each side of head; prolegs fleshy and not
pointed, usually on abdominal
             segments 2-8
& 10, sometimes on 2-7 or 2-6 & 10 (Figs.A-B) [sawfly larvae] 
             
................................................................................................................................Hymenoptera.…….. 118
 
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                                             A                                                             B