
- 1. Distal part of antenna articulated with basal part
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- 2. Hypostomal suture (HyS) absent or incomplete, usually absent
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- 3. Seta 12-I present
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- 4. Pecten (Pt) absent or reduced with at most four spines
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- 5. Saddle (Sa) complete or incomplete
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- 6. Seta 1-S inserted beyond base
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- 7. Siphon (S) usually sharply narrowed distally or sometimes modified for piercing plant tissues
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- 8. Ventral brush (VB) seta 4-X with four to six pairs of setae
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