DNA barcoding of Aphelopus Dalman (Hymenoptera, Dryinidae) from China, with descriptions of four new species Author Olmi, Massimo 147A9DA2-415F-4E17-8546-DEEEAB9230A9 Tropical Entomology Research Center, Via De Gasperi 10, 01100 Viterbo, Italy. olmimassimo@gmail.com Author Chen, Hua-Yan CDB89961-BBC3-412B-BE7F-B3B9E290B991 Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China. huayanc@scbg.ac.cn Author Guglielmino, Adalgisa 1EAE4622-8F64-484C-B439-76F9838F936F Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, 01100 Viterbo, Italy. guglielm@unitus.it Author Ødegaard, Frode 31BDDDCD-CA33-403F-AC01-2C769ADD08D4 Norwegian University of Science and Technology (NTNU), Department of Natural History, NO- 7491 Trondheim, Norway. frode.odegaard@ntnu.no Author Vollaro, Massimo 133EA7D3-0560-4CF2-973F-815E3F10CD32 Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, 01100 Viterbo, Italy. vollaro@unitus.it Author Capradossi, Leonardo 3F870526-E9B2-4318-A094-1533029AB6D3 Via Pericle Scriboni 28, 01017 Tuscania, Italy. leonardocapradossi.lc@gmail.com Author Liu, Jing-Xian 9465CC48-7A17-405A-AB27-2575A603AA3A Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China. liujingxian@scau.edu.cn text European Journal of Taxonomy 2022 2022-02-14 794 1 40 71 http://dx.doi.org/10.5852/ejt.2022.794.1653 journal article 20674 10.5852/ejt.2022.794.1653 df2404bb-d36e-468c-83a5-88b72d6b9b80 2118-9773 6078154 9527C4A6-E37C-450B-9BB1-B080CAFBA95F Aphelopus taianensis Olmi, Ødegaard & Chen sp. nov. urn:lsid:zoobank.org:act: 407CE45D-7B8C-426C-9145-A2A45E9BE81C Figs 6 , 8C Diagnosis Male with head black, except mandible testaceous; mesosoma black; notauli incomplete, reaching approximately 0.5× length of mesoscutum; aedeagus distally not tridentate ( Fig. 8C ); basivolsella very narrow ( Fig. 8C ), without distal outer process, with two subdistal bristles and one lateral outer pointed apophysis; distivolsella not in the form of a long straight rod. Etymology The new species is named after Taian City, where it has been collected. Material examined Holotype CHINA • ♂ ; Shandong , Taian ; 36°12′ N , 117°5′ E ; 20 Jul. 2015 ; Qing-Tao Gong leg.; apple orchard ; MT ; SCAU 3011647 ( SYSBM ). Description Male ( Figs 6 , 8C ) Fully winged; length 1.8 mm . Head black, except mandible testaceous; antenna brown, except scape and pedicel testaceous; mesosoma black; metasoma brown; legs yellow. Antenna filiform; antennomeres in following proportions: 3:4:3:4:5:5.5:5:6:6:10. Head dull, granulated; frontal line incomplete, absent shortly in front of anterior ocellus; occipital carina complete; POL = 6; OL = 3; OOL = 3; OPL = 1.5; TL = 2; greatest breadth of lateral ocellus about as long as TL. Mesoscutum and mesoscutellum dull, granulated. Notauli incomplete, reaching approximately 0.5 × length of mesoscutum ( Fig. 6C ). Metanotum shiny, unsculptured. Metapectal-propodeal complex dull, reticulate rugose, with two complete longitudinal keels on posterior surface; posterior surface with median area unsculptured and lateral areas rugose. Fore wing hyaline, without dark transverse bands. Basivolsella ( Fig. 8C ) very narrow, without distal outer process, with one lateral outer pointed apophysis and two subdistal bristles situated on top of each other. Tibial spurs 1/1/2. Fig. 6. Aphelopus taianensis Olmi,Ødegaard & Chen sp. nov. , ♂, holotype (SCAU 3011647). A . Habitus, dorsal view. B . Habitus, lateral view. C . Mesosoma, dorsal view. D . Head, anterodorsal view. Female Unknown. Remarks From the above diagnosis, A. taianensis Olmi, Ødegaard & Chen sp. nov. is close to A. nepalensis Olmi, 1984 . However, in the new species, the basivolsella ( Fig. 8C ) is very narrow and with one lateral pointed apophysis (very wide and without lateral pointed apophysis in A. nepalensis ( Olmi & Xu 2015 : pl. 4k). Following the description of A. taianensis Olmi, Ødegaard & Chen sp. nov. , the key to males of Oriental Aphelopus published by Olmi & Xu (2015) should be modified by replacing couplet 15 as follows: 15. Notauli reaching approximately 0.65 × length of mesoscutum ............... A. nigriceps Kieffer, 1905 – Notauli reaching approximately 0.5 × length of mesoscutum ( Fig. 6C ) ...................................... 15’ 15’. Basivolsella very wide, without lateral pointed apophysis, with two subdistal bristles situated on either side of each other ( Olmi & Xu 2015 : pl. 4k) .................................. A. nepalensis Olmi, 1984 – Basivolsella very narrow, with one lateral pointed apophysis and two subdistal bristles situated on top of each other ( Fig. 8C ) ....................................... A. taianensis Olmi, Ødegaard & Chen sp. nov.