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Wing with no areola postica cell No areola postica cell
Wing with areola postica cell present but not joined to median vein Areola postica (AP) cell present but not joined to median vein (M)
Wing with areola postica cell joined to median vein Areola postica (AP) cell joined to median vein (M)
Wing with areola postica cell fused to median vein Areola postica (AP) cell fused to median vein (M)

 

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