
- 1. Seta 1-C arises from a distinct process on the anterior margin
of the head
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- 2. Seta 14-C always near the anterior margin of the lateralia (Lat), at the base of the maxilla (Mx)
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- 3. Hypostomal suture (HyS) absent
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- 4. Abdominal segment VIII usually bears a comb plate (CP) with a single row of comb scales (C) on its posterior margin
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- 5. Siphon (S) with a single pair of seta 1-S inserted well above the base
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