 - 1. Larvae are very large
2. Coloration variable from pink to red and purple -
 - 3. Predaceous, mouthbrushes reduced to 10 or fewer thick flattened filaments for grasping prey
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 - 4. Abdominal setae occur in groups of three to five isolated on distinct sclerites
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 - 5. Comb (C) and pecten (Pt) absent
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