Syrastrenopsis moltrechti Grünberg, 1914, Pyeongchang, South Korea, 13 October 2014
http://www.boldsystems.org/index.php/Taxbrowser_Taxonpage?taxid=456467
Seems to be the only species in the genus in South Korea.
左边那只
右边的在求偶(似乎失败了
Cryptomyzus taoi, on the leaves of Lagopsis supina.
Reference:Photographic Atlas of Beijing Aphids (Aphidoidea) P.187
Jens Esser 2017 On Micrambe THOMSON, 1863 of China (Coleoptera: Cryptophagidae)