Systematics Key to the Chinese species of the Meganola argentescens species group

1 Postmedial line feeble and subterminal line black ............................................................................................................................ 2

- Postmedial line distinct and subterminal line grayish brown............................................................................................................ 3

2 Marking at medial line area of forewings smaller, valva straighter and saccus wider.............................................. M. argentescens

- Marking at medial line area of forewings bigger, valva arc-shaped and saccus longer and narrower..................... M. jinghongensis

3 Terminal line with a row of white spots inside, uncus shorter and broad, harpe sharp apically with dentation dorsally, aedeagus shorter and wider .............................................................................................................................................. M. weixiensis sp. nov.

- Terminal line without a row of white spots inside, uncus longer and slender, harpe round and screwy apically without dentation, aedeagus slender .......................................................................................................................................................... M. xui sp. nov.