Diaphragmistis is a genus of moths of the family Yponomeutidae. It was described in 1914 by Edward Meyrick, with Diaphragmistis macroglena from India as the type species. Two additional species, D. trapezia and D. ventiprocessa were discovered in China in 2013.
Species Diaphragmistis macroglena - Meyrick, 1914 Diaphragmistis trapezia - Wang, 2013 Diaphragmistis ventiprocessa - Wang, 2013
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