51a
(50b). Abdomen with a pair of hooks,
usually on anal prolegs, at posterior end and without
long
lateral processes (but at times with finger-like gills); tarsi with 1 claw;
usually living
in cases (Figs.A-F) [caddisfly
larvae]..........................................................….............…....Trichoptera
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D E F
51b. Abdomen with 4 hooks at posterior end or
none, and with or without long lateral
processes;
tarsi with 1-2 claws (Fig.A); not living in
cases [beetle larvae].......................
........................................................................................................................…...............
Coleoptera.....
152
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A
