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 gravida ( Sharp, 1881 ) Lachnosterna gravida Sharp, 1881: 227 ( type loc.: Soerian, Sumatra ). Holotrichia moffartsi Brenske, 1900: 148 ( type loc.: Sumatra ). Holotrichia gravida – Brenske 1894b: 277 (combination). — Dalla Torre 1912: 203 (catalogue). — Frey 1970: 248 (in key) . — Itoh 2002: 17 , figs 1–12 (redescription). Holotrichia moffartsi – Itoh 2002: 17 (synonym) . — Frey 1970: 248 (in key). Miridiba gravida – Coca-Abia 2008: 679 , 683 (combination; in key). — Matsumoto 2016: 3 , figs 9–11 (type material). Diagnosis See Sharp (1881) and Itoh (2002) . Material examined Lectotype of H. moffartsi (here designated) INDONESIA • ♂ ; “ Sumatra ”; “Lectotype Miridiba moffartsi ( Sharp, 1881 ) CH. Bu Gao det. 2017”; MFNB . Remarks Itoh (2002) redescribed Holotrichia gravida and Coca-Abia (2008) transferred it to Miridiba . In the original description, Sharp (1881) indicated that this species is closely allied to M. leucophthalma . We have not studied type specimens of H. gravida , but, after reviewing the redescription by Itoh (2002) , we agree with Sharp (1881) and include this species in morphotype III “ Leucophthalma ”. On the other hand, Brenske (1900) also considered H. moffartsi belonging to Leucophthalma group. The first author of this paper has studied and compared a syntype of H. moffartsi (MFNB) with the genitalia illustrations of M. gravida ( Itoh 2002 ) , verifying the synonymy proposed by this author ( Itoh 2002 ). Also, the syntype of H. moffartsi (MFNB) is designated as lectotype herein. Distribution Indonesia ( Sumatra ). Species included in Morphotype IV “Bidentata” The group is composed of seven species, which are characterized by antenna 10-segmented, pronotal surface densely punctate (distance between punctures equal or smaller than diameter of a puncture), and male and female genitalia as specified above.