Yamatofulvius laevigatus Yasunaga, 2000
Yamatofulvius minutus Yasunaga & Miyamoto, 2006 – invalid name of Yamatofulvius minutus Yasunaga & Miyamoto, 2012
Yamatofulvius minutus Yasunaga & Miyamoto, 2012
Yamatofulvius miyamotoi Yasunaga, 2000
Yamatofulvius sinuicornis Yasunaga, 2000
Yamatolygus insulanus Yasunaga, 1994 – basionym of Diognetus insulanus Yasunaga, 1994
Yamatolygus insulanus: Kim et al., 2019 – misidentification of Diognetus vernus Yasunaga, Schwartz & Chérot, 2023
Yamatolygus insulanus: Nozaki et al., 2016 – misidentification of Diognetus vernus Yasunaga, Schwartz & Chérot, 2023
Yamatolygus insulanus: Oh et al., 2018 – misidentification of Diognetus vernus Yasunaga, Schwartz & Chérot, 2023
Yamatolygus pilosus Yasunaga, 1994 – homonym of Diognetus yamato Yasunaga, 2023
Yamatorthotylus Yasunaga, 1999, Subgenus (Orthotylus)
Yangicoris geniculatus Cai, 1995
Yangiella mimetica Hsiao, 1964
Yangiella montana W.J. Zhang, Bai, Heiss & Cai, 2010
Yemma gracilis Linnavuori, 1974
Yemmalysus parallelus Štusák, 1972
Yemmatropis dispar (Hsiao, 1974)
Yemmatropis erectus Henry, 2002
Yemmatropis hsiaoi B. Cai & Bu, 2011
Yemmatropis nigrovittatus B. Cai & Bu, 2011
Yolinus albopustulatus China, 1940
Yolinus annulicornis Hsiao, 1979
Yotvata (Godataira) carinata Linnavuori, 2004
Yotvata (Godataira) ectagela (Linnavuori, 1975)
Yotvata (Godataira) hadibo Linnavuori, 1994
Yotvata (Godataira) hawtana Linnavuori, 1986
Yotvata (Godataira) pulcherrima Linnavuori, 1984
Yotvata (Godataira) salmana Linnavuori, 1984
Yotvata (Yotvata) albocunealis Linnavuori, 1986
Yotvata (Yotvata) erifyle Linnavuori, 1994
Yotvata (Yotvata) farsiana Linnavuori, 2010
Yotvata (Yotvata) nergal Linnavuori, 1984