Revision of the genus Miridiba Reitter, 1902 (Coleoptera, Scarabaeidae, Melolonthinae): genital morphotypes and new taxonomic data Author Gao, Chuan-bu D260A269-8B1F-41CE-AD17-703E2BBE07F3 Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, 105 Xingang Road W., Guangzhou 510260, China. Unidad de Protección Vegetal. Centro de Investigación y Tecnología Agroalimentaria (CITA) e Instituto Agroalimentario de Aragón (IA 2) (CITA-Universidad de Zaragoza), Avenida Montañana, 930. 50059 Zaragoza, Spain. & Buzh. Buzh.Gao@msn.com Author Coca-Abia, María Milagro AA630400-F786-448F-952E-DC786CA8644A mcoca@aragon.es text European Journal of Taxonomy 2021 2021-05-12 749 1 94 http://dx.doi.org/10.5852/ejt.2021.749.1355 journal article 6634 10.5852/ejt.2021.749.1355 83109e54-596a-4be0-ac2c-c4e1702cfb8a 2118-9773 4770293 25FD5744-861D-45E4-B6AD-350716AA29BF Miridiba lamellata Gao & Fang, 2019 Miridiba ( Pledina ) lamellata Gao & Fang in Gao et al. , 2019: 459 , figs 1–18 ( type loc.: Gui Yang city, Guizhou Province , China ). Diagnosis See Gao et al . (2019) . Remarks Gao et al . (2019) described Miridiba ( Pledina ) lamellata based on the male holotype only, deposited in the collection of Shenyang Agricultural University of China . This species was included in the subgenus Pledina based on the antenna 10-segmented ( Gao et al . 2019 ), without specifying the features of M. lamellata shared with M. sinensis (type species of Pledina ), which would justify considering this new species in the subgenus. We have studied herein M. sinensis that, together with M. pseudosinensis , M. axanensis and M. quasisinensis , constitute the morphotype V “ Sinensis ”, candidate to be subgenus Pledina (see Discussion and Conclusions), and we have not found enough similarities to consider M. lamellata belonging to morphotype V “ Sinensis ”. The antenna 10-segmented, the only character considered by Gao et al . (2019) to classify this new species in the subgenus Pledina , is shared by many other Miridiba species , those included herein in morphotypes II to VIII, and even by many other species of Holotrichia . Therefore, this character is not enough to consider M. lamellata belonging to Pledina . In addition to that, this new species can be separated from M. sinensis by the branches of parameres and setae on mentum and pygidium ( Gao et al . 2019 : figs 9, 14–17), both species are so different that M. lamellata cannot be considered belonging to Pledina . Likewise, the mentum and labrum of M. lamellata differ from those of Miridiba . Unlike Miridiba , the new species has the mentum with sparse pubescence on the anterior part, and the labrum more strongly depressed at its ventral part than at dorsal one ( Gao et al . 2019 : figs 5, 9). Therefore, the second author of this paper has doubts about inclusion of M. lamellata in the genus Miridiba . However, taking into account that the first author of this paper is one of the authors of the species and the second author has not studied it, M. lamellata is considered a species incertae sedis of Miridiba . Distribution China ( Guizhou ).