 - 1. Head, scutum and abdominal segments ornamented with patches
of flat silver scales
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 - 2. Scutum, dorsocentral setae (DS) absent
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 - 3. Pleuron with a broad vertical stripe of silver scales
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 - 4. Prespiracular setae (PsS) absent
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 - 5. Postspiracular setae (PS) absent
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 - 6. Lower mesepimeral setae (MeSL) present
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 - 7. Pulvilli (Pv) absent
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 - 8. Wing upper calypter (UC) with fringe of setae
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 - 9. Wing alula (Al) bare
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 - 10. Wing anal vein (1A) ends only slightly beyond base of mediocubital
crossvein (mcu)
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 - 11. Wing cell R2 distinctly shorter than vein R2+3
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