Aphelopus taianensis Olmi, Odegaard & Chen 2022, sp. nov

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. 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.