
- 1. Maxilla with well-developed brush
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- 2. Hypostomal suture (HyS) complete
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- 3. Occipital foramen (OF) circular with incomplete collar
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- 4. Comb (C) and pecten (Pt) present
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- 5. Saddle (Sa) poorly developed, composed of weakly sclerotized
dorsal and ventral sclerites
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- 6. Siphon (S) with three pairs of seta 1-S
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- 7. Ventral brush (VB) (seta 4-X) with five pairs of setae
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