“…Pseudocleruchus is synonymized herein under Platystethynium and its nominate subgenus P. (Platystethynium) because all of their important generic-level morphological features, including the reduced female mandibles, are very similar, and the known host of P. (Platystethynium) onomarchicidum Ogloblin, 1946 is also a bush-cricket, Onomarchus uninotatus (Serville, 1838) (Tettigoniidae) (Ogloblin, 1946). species of the former genus Pseudocleruchus (1 described and 2 undescribed species, which for the time being, until genetic data becomes available, can be grouped in the informal triclavatum species group), have shorter heads, less flattened and shorter bodies, and wider fore wings than the two described Oriental species of the nominate subgenus of Platystethynium, P. (Platystethynium) onomarchicidum, known from Indonesia (Ogloblin, 1946), and P. (Platystethynium) glabrum Jin & Li, 2016, known from China (Jin & Li, 2016) including Taiwan (Triapitsyn, 2018), and also from India (Sankararaman, Manickavasagam & Palanivel, 2019). The latter two nominal species can be grouped in the informal onomarchicidum species group and are possibly synonymous (Triapitsyn, 2018), Key to species groups and described species of the subgenus Platystethynium (Platystethynium Ogloblin, 1946), females Platystethynium (Platystethynium) triclavatum (Donev & Huber, 2002), comb.…”