In the present monograph, the taxonomy of the species of the genus Maladera Mulsant & Rey, 1871 from China is revised. We recorded 224 valid species for China, including 152 species new to science: Maladera allonitens Ahrens, Fabrizi & Liu, sp. n., M. anhuiensis Ahrens, Fabrizi & Liu, sp. n., M. apicalis Ahrens, Fabrizi & Liu, sp. n., M. aptera Ahrens, Fabrizi & Liu, sp. n., M. baii Ahrens, Fabrizi & Liu, sp. n., M. baishaoensis Ahrens, Fabrizi & Liu, sp. n., M. bansongchana Ahrens, Fabrizi & Liu, sp. n., M. baoxingensis Ahrens, Fabrizi & Liu, sp. n., M. bawanglingana Ahrens, Fabrizi & Liu, sp. n., M. bawanglingensis Ahrens, Fabrizi & Liu, sp. n., M. beibengensis Ahrens, Fabrizi & Liu, sp. n., M. beidouensis Ahrens, Fabrizi & Liu, sp. n., M. bikouensis Ahrens, Fabrizi & Liu, sp. n., M. breviclava Ahrens, Fabrizi & Liu, sp. n., M. bubengensis Ahrens, Fabrizi & Liu, sp. n., M. businskyorum Ahrens, Fabrizi & Liu, sp. n., M. chenzhouana Ahrens, Fabrizi & Liu, sp. n., M. constellata Ahrens, Fabrizi & Liu, sp. n., M. crenatotibialis Ahrens, Fabrizi & Liu, sp. n., M. crenolatipes Ahrens, Fabrizi & Liu, sp. n., M. daanensis Ahrens, Fabrizi & Liu, sp. n., M. dadongshanica Ahrens, Fabrizi & Liu, sp. n., M. dahongshanica Ahrens, Fabrizi & Liu, sp. n., M. dajuensis Ahrens, Fabrizi & Liu, sp. n., M. danfengensis Ahrens, Fabrizi & Liu, sp. n., M. dayaoshanica Ahrens, Fabrizi & Liu, sp. n., M. diaolinensis Ahrens, Fabrizi & Liu, sp. n., M. emeifengensis Ahrens, Fabrizi & Liu, sp. n., M. enigma Ahrens, Fabrizi & Liu, sp. n., M. erlangshanica Ahrens, Fabrizi & Liu, sp. n., M. eshanensis Ahrens, Fabrizi & Liu, sp. n., M. excisilabrata Ahrens, Fabrizi & Liu, sp. n., M. fangana Ahrens, Fabrizi & Liu, sp. n., M. fangchengensis Ahrens, Fabrizi & Liu, sp. n., M. fencli Ahrens, Fabrizi & Liu, sp. n., M. fengyangshanica Ahrens, Fabrizi & Liu, sp. n., M. fereobscurata Ahrens, Fabrizi & Liu, sp. n., M. filigraniforceps Ahrens, Fabrizi & Liu, sp. n., M. flavipennis Ahrens, Fabrizi & Liu, sp. n., M. fuanensis Ahrens, Fabrizi & Liu, sp. n., M. guangdongana Ahrens, Fabrizi & Liu, sp. n., M. guangzhaishanica Ahrens, Fabrizi & Liu, sp. n., M. guanxianensis Ahrens, Fabrizi & Liu, sp. n., M. guanxiensis Ahrens, Fabrizi & Liu, sp. n., M. guomenshanensis Ahrens, Fabrizi & Liu, sp. n., M. guomenshanica Ahrens, Fabrizi & Liu, sp. n., M. gusakovi Ahrens, Fabrizi & Liu, sp. n., M. haba Ahrens, Fabrizi & Liu, sp. n., M. habashanensis Ahrens, Fabrizi & Liu, sp. n., M. hajeki Ahrens, Fabrizi & Liu, sp. n., M. hansmalickyi Ahrens, Fabrizi & Liu, sp. n., M. hongyuanensis Ahrens, Fabrizi & Liu, sp. n., M. houzhenziensis Ahrens, Fabrizi & Liu, sp. n., M. hsui Ahrens, Fabrizi & Liu, sp. n., M. huanianensis Ahrens, Fabrizi & Liu, sp. n., M. hubeiensis Ahrens, Fabrizi & Liu, sp. n., M. hui Ahrens, Fabrizi & Liu, sp. n., M. hunanensis Ahrens, Fabrizi & Liu, sp. n., M. hunuguensis Ahrens, Fabrizi & Liu, sp. n., M. hutiaoensis Ahrens, Fabrizi & Liu, sp. n., M. jaroslavi Ahrens, Fabrizi & Liu, sp. n., M. jatuai Ahrens, Fabrizi & Liu, sp. n., M. jiangi Ahrens, Fabrizi & Liu, sp. n., M. jingdongensis Ahrens, Fabrizi & Liu, sp. n., M. jinggangshanica Ahrens, Fabrizi & Liu, sp. n., M. jinghongensis Ahrens, Fabrizi & Liu, sp. n., M. jiucailingensis Ahrens, Fabrizi & Liu, sp. n., M. jizuana Ahrens, Fabrizi & Liu, sp. n., M. juntongi Ahrens, Fabrizi & Liu, sp. n., M. juxianensis Ahrens, Fabrizi & Liu, sp. n., M. kalawensis Ahrens, Fabrizi & Liu, sp. n., M. kryschanowskii Ahrens, Fabrizi & Liu, sp. n., M. kubeceki Ahrens, Fabrizi & Liu, sp. n., M. laocaiensis Ahrens, Fabrizi & Liu, sp. n., M. lianxianensis Ahrens, Fabrizi & Liu, sp. n., M. liaochengensis Ahrens, Fabrizi & Liu, sp. n., M. liwenzhui Ahrens, Fabrizi & Liu, sp. n., M. longruiensis Ahrens, Fabrizi & Liu, sp. n., M. luoxiangensis Ahrens, Fabrizi & Liu, sp. n., M. lushanensis Ahrens, Fabrizi & Liu, sp. n., M. lushuiensis Ahrens, Fabrizi & Liu, sp. n., M. maguanensis Ahrens, Fabrizi & Liu, sp. n., M. maoershana Ahrens, Fabrizi & Liu, sp. n., M. mupingensis Ahrens, Fabrizi & Liu, sp. n., M. nabanensis Ahrens, Fabrizi & Liu, sp. n., M. nanlingensis Ahrens, Fabrizi & Liu, sp. n., M. nanpingensis Ahrens, Fabrizi & Liu, sp. n., M. ninglangensis Ahrens, Fabrizi & Liu, sp. n., M. panyuensis Ahrens, Fabrizi & Liu, sp. n., M. parabrunnescens Ahrens, Fabrizi & Liu, sp. n., M. paradetersa Ahrens, Fabrizi & Liu, sp. n., M. paranitens Ahrens, Fabrizi & Liu, sp. n., M. paraserripes Ahrens, Fabrizi & Liu, sp. n., M. parobscurata Ahrens, Fabrizi & Liu, sp. n., M. peregoi Ahrens, Fabrizi & Liu, sp. n., M. pieli Ahrens, Fabrizi & Liu, sp. n., M. pingchuanensis Ahrens, Fabrizi & Liu, sp. n., M. pseudoconsularis Ahrens, Fabrizi & Liu, sp. n., M. pseudoegregia Ahrens, Fabrizi & Liu, sp. n., M. pseudoexima Ahrens, Fabrizi & Liu, sp. n., M. pseudofuscipes Ahrens, Fabrizi & Liu, sp. n., M. pseudonitens Ahrens, Fabrizi & Liu, sp. n., M. pseudosenta Ahrens, Fabrizi & Liu, sp. n., M. pui Ahrens, Fabrizi & Liu, sp. n., M. putaodiensis Ahrens, Fabrizi & Liu, sp. n., M. qianqingtangensis Ahrens, Fabrizi & Liu, sp. n., M. queinneci Ahrens, Fabrizi & Liu, sp. n., M. riberai Ahrens, Fabrizi & Liu, sp. n., M. robustula Ahrens, Fabrizi & Liu, sp. n., M. rubriventris Ahrens, Fabrizi & Liu, sp. n., M. rufonitida Ahrens, Fabrizi & Liu, sp. n., M. rufopaca Ahrens, Fabrizi & Liu, sp. n., M. sanqingshanica Ahrens, Fabrizi & Liu, sp. n., M. serratiforceps Ahrens, Fabrizi & Liu, sp. n., M. shaluishanica Ahrens, Fabrizi & Liu, sp. n., M. shangraoensis Ahrens, Fabrizi & Liu, sp. n., M. shaowuensis Ahrens, Fabrizi & Liu, sp. n., M. shenglongi Ahrens, Fabrizi & Liu, sp. n., M. shengqiaoae Ahrens, Fabrizi & Liu, sp. n., M. shiniushanensis Ahrens, Fabrizi & Liu, sp. n., M. shiruguanensis Ahrens, Fabrizi & Liu, sp. n., M. shiwandashanensis Ahrens, Fabrizi & Liu, sp. n., M. shoumanensis Ahrens, Fabrizi & Liu, sp. n., M. sinobiloba Ahrens, Fabrizi & Liu, sp. n., M. snizeki Ahrens, Fabrizi & Liu, sp. n., M. songi Ahrens, Fabrizi & Liu, sp. n., M. taiyangheensis Ahrens, Fabrizi & Liu, sp. n., M. tengchongensis Ahrens, Fabrizi & Liu, sp. n., M. tiachiensis Ahrens, Fabrizi & Liu, sp. n., M. tiammushanica Ahrens, Fabrizi & Liu, sp. n., M. tiani Ahrens, Fabrizi & Liu, sp. n., M. tianzushanica Ahrens, Fabrizi & Liu, sp. n., M. tongzhongensis Ahrens, Fabrizi & Liu, sp. n., M. trifidiforceps Ahrens, Fabrizi & Liu, sp. n., M. uncipenis Ahrens, Fabrizi & Liu, sp. n., M. wandingana Ahrens, Fabrizi & Liu, sp. n., M. weni Ahrens, Fabrizi & Liu, sp. n., M. wipfleri Ahrens, Fabrizi & Liu, sp. n., M. wulaoshanica Ahrens, Fabrizi & Liu, sp. n., M. wuliangshanensis Ahrens, Fabrizi & Liu, sp. n., M. wupingensis Ahrens, Fabrizi & Liu, sp. n., M. xingkei Ahrens, Fabrizi & Liu, sp. n., M. xingkeyangi Ahrens, Fabrizi & Liu, sp. n., M. xinqiaoensis Ahrens, Fabrizi & Liu, sp. n., M. xuezhongi Ahrens, Fabrizi & Liu, sp. n., M. yakouensis Ahrens, Fabrizi & Liu, sp. n., M. yangi Ahrens, Fabrizi & Liu, sp. n., M. yibini Ahrens, Fabrizi & Liu, sp. n., M. yipinglangensis Ahrens, Fabrizi & Liu, sp. n., M. yongrenensis Ahrens, Fabrizi & Liu, sp. n., M. yunnanica Ahrens, Fabrizi & Liu, sp. n., M. zhejiangensis Ahrens, Fabrizi & Liu, sp. n. The work also resulted in nine new combinations and 17 new synonyms: Maladera (subgenus Omaladera Reitter, 1896) (= Cephaloserica Brenske, 1900, syn. n.; = Coronoserica Brenske, 1902, syn. n.); Maladera formosae (Brenske, 1898) (= Autoserica castanea Arrow, 1913, syn. n.; = Serica korgei Petrovitz, 1967, syn. n.); Maladera motschulskyi (Brenske, 1897) (= Autoserica furcillata Brenske, 1897, syn. n.; Serica schoenfeldti Murayama, 1937, syn. n.); Maladera pallida (Burmeister, 1855) comb. n. (= Maladera ludipennis Miyake, Yamaguchi & Aoki 2002, syn. n.); Maladera renardi (Ballion, 1870) (= Serica delicta Brenske, 1897, syn. n.); Maladera secreta (Brenske, 1897) (= Autoserica cruralis Frey, 1972, syn. n.); Maladera verticalis (Fairmaire, 1888) (= Autoserica hiekei Frey, 1972, syn. n.); Maladera futschauana (Brenske, 1897) (= Autoserica atavana Brenske, 1902, syn. n.; = Autoserica montivaga Moser, 1915, syn. n.); Maladera aureola (Murayama, 1938) (= Maladera liotibia Nomura, 1974, syn. n.); Maladera brunnescens (Frey, 1972) comb. n., Maladera exima (Arrow, 1946) comb. n., Maladera gansuensis (Miyake & Yamaya, 2001) comb. n., Maladera nigrobrunnea (Moser, 1926) comb. n., Maladera orientalis (Motschulsky, 1858) (= Serica salebrosa Brenske, 1897, syn. n.; =Autoserica davidis Brenske, 1898, syn. n.; = Serica mirabilis Brenske, 1894, syn. n.), Maladera punctulata (Frey, 1972) comb. n., Maladera rotunda (Arrow, 1946) comb. n., Maladera serripes (Moser, 1915) comb. n., Maladera senta (Brenske, 1897) (= Autoserica subspinosa Brenske, 1898, syn n.); Maladera spissigrada (Brenske, 1897) (= Serica nakayamai Murayama, 1938, syn. n.); Maladera tibialis (Brenske, 1898) comb. n. The lectotypes of the following species were designated: Autoserica furcillata Brenske, 1897, A. cariniceps Moser, 1915, A. diversipes Moser, 1915, A. flammea Brenske, 1898, A. fuscipes Moser, 1915, A. gibbiventris Brenske, 1897, A. hongkongica Brenske, 1898, A. obscurata Moser, 1915, A. piceola Moser, 1915, Serica delicta Brenske, 1897, S. exigua Brenske, 1894, S. nigrobrunnea Moser, 1926, S. orientalis Motschulsky, 1858, S. pallida Burmeister, 1855, S. salebrosa Brenske, 1897, and S. sibirica Brenske, 1897. Keys to the subgenera and species groups of Maladera, as well as a key to the species within each species-group are provided. Furthermore, we provide maps of the species distribution, as well as illustrations of the habitus and male genitalia.

Global food insecurity is becoming more severe under the threat of rising global carbon dioxide concentrations, increasing population, and shrinking farmlands and their degeneration. We acquired the ISI Web of Science platform for over 31 years (1988–2018) to review the research on how climate change impacts global food security, and then performed cluster analysis and research hotspot analysis with VosViewer software. We found there were two drawbacks that exist in the current research. Firstly, current field research data were defective because they were collected from various facilities and were hard to integrate. The other drawback is the representativeness of field research site selection as most studies were carried out in developed countries and very few in developing countries. Therefore, more attention should be paid to developing countries, especially some African and Asian countries. At the same time, new modified mathematical models should be utilized to process and integrate the data from various facilities and regions. Finally, we suggested that governments and organizations across the world should be united to wrestle with the impact of climate change on food security.

Here we present an overview of the species of the genus Amiserica Nomura, 1974. The taxonomy of the species of eastern Asia (China and adjacent regions) is revised herein, which so far have not been treated yet. Twenty-eight species are discovered new to science: Amiserica basisymmetrica Ahrens, Fabrizi & Liu, new species, A. belousovi Ahrens, Fabrizi & Liu, new species, A. carolusholzschuhi Ahrens, Fabrizi & Liu, new species, A. diaocangshana Ahrens, Fabrizi & Liu, new species, A. eucurviforceps Ahrens, Fabrizi & Liu, new species, A. fengyangensis Ahrens, Fabrizi & Liu, new species, A. funiushanica Ahrens, Fabrizi & Liu, new species, A. gibbosiforceps Ahrens, Fabrizi & Liu, new species, A. guanmenshanica Ahrens, Fabrizi & Liu, new species, A. guizhouensis Ahrens, Fabrizi & Liu, new species, A. gulinqin Ahrens, Fabrizi & Liu, new species, A. incisa Ahrens, Fabrizi & Liu, new species, A. jiuhuensis Ahrens, Fabrizi & Liu, new species, A. jizuensis Ahrens, Fabrizi & Liu, new species, A. linzhouensis Ahrens, Fabrizi & Liu, new species, A. longxinensis Ahrens, Fabrizi & Liu, new species, A. lucidiflava Ahrens, Fabrizi & Liu, new species, A. nahang Ahrens, Fabrizi & Liu, new species, A. panghongae Ahrens, Fabrizi & Liu, new species, A. pappi Ahrens, Fabrizi & Liu, new species, A. piaoac Ahrens, Fabrizi & Liu, new species, A. pseudoantennalis Ahrens, Fabrizi & Liu, new species, A. pseudoincisa Ahrens, Fabrizi & Liu, new species, A. sacculiforceps Ahrens, Fabrizi & Liu, new species, A. strnadi Ahrens, Fabrizi & Liu, new species, A. ventriscalptus Ahrens, Fabrizi & Liu, new species, A. venxianensis Ahrens, Fabrizi & Liu, new species, A. zhongtiaoshanensis Ahrens, Fabrizi & Liu, new species. Furthermore, our investigation resulted in two new combinations: Maladera (Eumaladera) loi (Kobayashi, 1991), new combination and Amiserica antennalis (Nomura, 1974), new combination; the first species is thus excluded from Amiserica. A key to species groups and species within groups is given, habitus and male genitalia are illustrated. The distribution of the species revised herein is shown on maps.

In this paper we revised the species of Serica McLeay, 1819 (sensu lato) occurring in China an adjacent areas, and provide an update on the genus Nipponoserica Nomura, 1972. The revision resulted in one new combination: Serica adspersa (Frey, 1972), new combination. Thirty-nine new species are described: Nipponoserica daqiao Ahrens, Fabrizi & Liu, new species, Serica allolongipes Ahrens, Fabrizi & Liu, new species, S. allotengchongana Ahrens, Fabrizi & Liu, new species, S. baishuitaiensis Ahrens, Fabrizi & Liu, new species, S. baoshan Ahrens, Fabrizi & Liu, new species, S. daqiaoana Ahrens, Fabrizi & Liu, new species, S. dissimillima Ahrens, Fabrizi & Liu, new species, S. emaw Ahrens, Fabrizi & Liu, new species, S. gaoligong Ahrens, Fabrizi & Liu, new species, S. guangnanensis Ahrens, Fabrizi & Liu, new species, S. hailuogou Ahrens, Fabrizi & Liu, new species, S. huangbaiyuanensis Ahrens, Fabrizi & Liu, new species, S. huangjing Ahrens, Fabrizi & Liu, new species, S. jani Ahrens, Fabrizi & Liu, new species, S. jaroslavi Ahrens, Fabrizi & Liu, new species, S. jiankouensis Ahrens, Fabrizi & Liu, new species, S. jirii Ahrens, Fabrizi & Liu, new species, S. kuankuoshuiensis Ahrens, Fabrizi & Liu, new species, S. limbourgi Ahrens, Fabrizi & Liu, new species, S. longipes longipes Ahrens, Fabrizi & Liu, new species, S. longwang Ahrens, Fabrizi & Liu, new species, S. mengsongana Ahrens, Fabrizi & Liu, new species, S. nanhua Ahrens, Fabrizi & Liu, new species, S. pangwa Ahrens, Fabrizi & Liu, new species, S. paralongipes Ahrens, Fabrizi & Liu, new species, S. paralupina Ahrens, Fabrizi & Liu, new species, S. pseudogracilipes Ahrens, Fabrizi & Liu, new species, S. shengtangshan Ahrens, Fabrizi & Liu, new species, S. shiduensis Ahrens, Fabrizi & Liu, new species, S. smetanai Ahrens, Fabrizi & Liu, new species, S. taishun Ahrens, Fabrizi & Liu, new species, S. tengchongana Ahrens, Fabrizi & Liu, new species, S. tianmushan Ahrens, Fabrizi & Liu, new species, S. tianpingshanensis Ahrens, Fabrizi & Liu, new species, S. yini Ahrens, Fabrizi & Liu, new species, S. yuheba Ahrens, Fabrizi & Liu, new species, S. zhenba Ahrens, Fabrizi & Liu, new species, S. ziqingi Ahrens, Fabrizi & Liu, new species. A key to species groups and species within groups is given, habitus and male genitalia of the revised species are illustrated. The distribution of the species revised herein is shown on maps. New distributional data are given for sixteen species.

An update to the taxonomy and distribution of species of Tetraserica Ahrens, 2004 (Coleoptera: Scarabaeidae) is given. We present new records of 36 taxa and describe 13 new species from continental Southeast Asia: Tetraserica bartolozzii Ahrens, new species, T. bankrang Ahrens, new species, T. sraeken Ahrens, new species, T. yongbelar Ahrens, new species, T. hubleyi Ahrens, new species, T. hornburgi Ahrens, new species, T. khemoi Ahrens, new species, T. weigeli Ahrens, new species, T. yucheni Liu, Li & Ahrens, new species, T. fabriziae Liu, Li & Ahrens, new species, T. gialaiensis Pham & Ahrens, new species, T. phamanhi Pham & Ahrens, new species, and T. semikontumensis Pham & Ahrens, new species. The male genitalia of the new species are illustrated and diagnostic characters to related species are given. The key to species of continental Southeast Asia is updated.

The current paper gives an overview of the species of continental Asia so far assigned to the genus Microserica Brenske, 1894. Moronoserica Ahrens, Lukic & Liu, new genus, and Gastroserica (Helioserica Ahrens, Lukic & Liu, new subgenus), and 33 new species are described: Gastroserica bannok Ahrens, Lukic & Liu, new species, G. fumaria Ahrens, Lukic & Liu, new species, G. ivoi Ahrens, Lukic & Liu, new species, G. loei Ahrens, Lukic & Liu, new species, G. lucidomarginalis Ahrens, Lukic & Liu, new species, G. phukradung Ahrens, Lukic & Liu, new species, G. piceocoerulea Ahrens, Lukic & Liu, new species, G. rubropicea Ahrens, Lukic & Liu, new species, G. simaoensis Ahrens, Lukic & Liu, new species, G. yuebaensis Ahrens, Lukic & Liu, new species, Microserica allovarians Ahrens, Lukic & Liu, new species, Mic. banlaoana Ahrens, Lukic & Liu, new species, Mic. caiyangheana Ahrens, Lukic & Liu, new species, Mic. chaiyaphum Ahrens, Lukic & Liu, new species, Mic. cucphuong Ahrens, Lukic & Liu, new species, Mic. ferestictica Ahrens, Lukic & Liu, new species, Mic. hieroglyphica Ahrens, Lukic & Liu, new species, Mic. multipunctata Ahrens, Lukic & Liu, new species, Mic. namnao Ahrens, Lukic & Liu, new species, Mic. neosimplex Ahrens, Lukic & Liu, new species, Mic. parasimplex Ahrens, Lukic & Liu, new species, Mic. paravicula Ahrens, Lukic & Liu, new species, Mic. planiforceps Ahrens, Lukic & Liu, new species, Mic. viengvai Ahrens, Lukic & Liu, new species, Mic. vinden Ahrens, Lukic & Liu, new species, Mic. vipinglangensis Ahrens, Lukic & Liu, new species, Moronoserica banmethout Ahrens, Lukic & Liu, new species, Mor. renong Ahrens, Lukic & Liu, new species, Mor. squamulatoides Ahrens, Lukic & Liu, new species, Mor. songbae Ahrens, Lukic & Liu, new species, Mor. thungyai Ahrens, Lukic & Liu, new species, Oxyserica bifascipennis Ahrens, Lukic & Liu, new species, O. serena Ahrens, Lukic & Liu, new species. The revision results in 39 new combinations: Gastroserica bisignata (Nomura, 1974) new combination, G. cognata (Frey, 1972) new combination, G. dohertyi (Ahrens & Fabrizi, 2009) new combination, G. hiulca (Brenske, 1897) new combination, G. lucens (Ahrens & Fabrizi, 2009) new combination, G. nitidipyga (Nomura, 1974) new combination, G. quateorum (Frey, 1972) new combination, G. roingensis (Fabrizi & Ahrens, 2016) new combination, G. varians (Moser, 1915) new combination, Microserica avicula (Arrow, 1946) new combination, Mic. costisquamosa (Ahrens, Fabrizi & Liu, 2019) new combination, Mic. septemfoliata (Frey, 1972) new combination, Moronoserica banvaneue (Bohacz & Ahrens, 2020) new combination, Mor. crenatostriata (Ahrens, 2004) new combination, Mor. geberbauer (Ahrens, 2004) new combination, Mor. ginae (Bohacz & Ahrens, 2020) new combination, Mor. helferi (Bohacz & Ahrens, 2020) new combination, Mor. lineata (Moser, 1915) new combination, Mor. squamulata (Moser, 1915) new combination, Mor. tenasserimensis (Bohacz & Ahrens, 2020) new combination, Mor. ventrosa (Bohacz & Ahrens, 2020) new combination, Oxyserica arunensis (Ahrens, 1998) new combination, O. bhutanensis (Frey, 1975) new combination, O. cechovskyi (Ahrens, 1999) new combination, O. diversicornis (Moser, 1915) new combination, O. elegans (Frey, 1975) new combination, O. gandakiensis (Ahrens, 1998) new combination, O. hispidula (Frey, 1975) new combination, O. interrogator (Arrow, 1946) new combination, O. marginata (Brenske, 1896) new combination, O. martensi (Ahrens, 1998) new combination, O. myagdiana (Ahrens, 1998) new combination, O. nigropicta (Fairmaire, 1891) new combination, O. pedongensis (Ahrens, 1998) new combination, O. pruinosa (Hope, 1831) new combination, O. schawalleri (Ahrens, 1998) new combination, O. schulzei (Ahrens, 1998) new combination, O. steelei (Ahrens, 2004) new combination, O. truncata (Brenske, 1898) new combination. Lectotypes were designated of Microserica hiulca Brenske, 1897 and Serica nigropicta Fairmaire, 1891. A checklist and key to genera, species groups, and species is given, the diagnostic characters of the newly revised taxa and their distribution is illustrated.