
- 1. Distal part of antenna (Ant) fused with basal part
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- 2. Hypostomal suture (HyS) incomplete or absent
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- 3. Abdominal seta 12-I present
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- 4. Comb scales (C) in a single row
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- 5. Pecten (Pt) with at most two teeth
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- 6. Saddle (Sa) complete, with one or more minute setae on ventral
midline
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- 7. Seta 1-S inserted near base of siphon
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- 8. Ventral brush (VB) (seta 4-X) with four to six pairs of setae
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