49a (48b).    Mouthparts with 2 slender and elongated structures, longer than
head; antennae long
             and slender, or
least 1/3rd as long as body; tarsi with 1 claw (Fig.A); live in freshwater
               sponges [Sisyridae
larvae].....................................................................................Neuroptera.….... 194 
 
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                               A
 
 
49b.    Mouthparts, and usually also antennae,
short and not as described previously.............……....... 50