Key to species of the annulignatha- group in China (based on male genitalia) 1 Valva arched or sinuate on ventral margin................................................................. 2 - Valva triangularly projected on ventral margin.............................................................. 3 2 Valva arched on ventral margin, gnathos banded anteromedially, costa with an apical spine (Fig. 45).. M. sinuicosta sp. nov. - Valva sinuate on ventral margin, gnathos elliptical anteromedially, costa without an apical spine (Fig. 44)................................................................................................... M. artivalva sp. nov. 3 Costa with a sub-quadrate process near base, sacculus with a digitate process dorsoapically (Fig. 43).................................................................................................... M. annulignatha sp. nov. - Costa with a banded process near base, sacculus with a narrow triangular or a sub-rounded process dorsoapically......... 4 4 Sacculus with a sub-rounded dorsoapical process, aedeagus without spines at apex (Wang 2006a: Fig. 8)..... M. bifoliolata - Sacculus with a narrow triangular dorsoapical process, aedeagus with spines at apex (Fig. 46)...... M. taiwanensis sp. nov.

Published as part of Wang, Shuxia & Zhu, Xiaoju, 2020, Study of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of twenty-one new species (II), pp. 257-289 in Zootaxa 4881 (2) on page 279, DOI: 10.11646/zootaxa.4881.2.3, http://zenodo.org/record/4283658