A taxonomic review of the genus Physatocheila Fieber (Hemiptera: Heteroptera: Tingidae) from the Korean Peninsula, with description of a new species and a key to Korean Physatocheila species Author Ji, Hankyul 0000-0002-7587-930X Laboratory of Systematic Entomology, Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National & https: // orcid. org / 0000 - 0002 - 7587 - 930 X & These authors contributed equally to this work as first author. Author Kim, Junggon 0000-0003-0594-7618 Private office, Gyebaek-ro, Jung-gu, Daejeon, Korea. https: // orcid. org / 0000 - 0003 - 0594 - 7618 & These authors contributed equally to this work as first author. Author Jang, Geunho 0000-0003-4670-0662 Laboratory of Systematic Entomology, Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National & Department of Smart Agriculture Systems, College of Agriculture and Life Sciences, Chungnam National University, Daejeon, Korea. https: // orcid. org / 0000 - 0003 - 4670 - 0662 Author Jung, Sunghoon 0000-0003-4670-0662 Laboratory of Systematic Entomology, Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National & Department of Smart Agriculture Systems, College of Agriculture and Life Sciences, Chungnam National University, Daejeon, Korea. https: // orcid. org / 0000 - 0003 - 4670 - 0662 text Zootaxa 2023 2023-03-30 5258 4 455 464 http://dx.doi.org/10.11646/zootaxa.5258.4.6 journal article 241279 10.11646/zootaxa.5258.4.6 e20d25df-48ae-4bab-9d3f-e793accb0368 1175-5326 7784585 E0CCE7C3-CF8D-497D-8CE0-F955932EAD6F Physatocheila smreczynskii China , 1952 ( Figs. 1E , 2E , 3B , 4E , 5E , 6E ) Tingis corticea Herrich-Schaeffer, 1830 : pl. 22 (syn. Herrish-Schaeffer, 1835, with Acanthia quadrimaculata Wolff ; syn. nov.). Physatocheila smreczynskii China , 1952: 49 . Physatocheila foersteri V.G. Putshkov, 1969: 34 (syn. V.G. Putshkov 1974: 271 ). Diagnosis. Body reddish or dark-brown, elongated oval, fusiform ( Fig. 1E ); middle part of hood strongly convex ( Fig. 2E ); paranota narrow, maximal width from anterolateral margin to inner margin less than the minimal width between paranota, inner margin not reaching lateral carina (arrows; Figs. 2E , 3B ); areolae size not consistent in costal area, with three rows of areolae in basal part, four to five rows in middle part, two rows in apical part; areolae size of discoidal area subequal to those of subcostal area ( Fig. 4E ); middle part of inner margin of paramere straight ( Fig. 5E ); middle part of outer margin of pygophore slightly sinuate ( Fig. 6E ). Description. Male : Body reddish-brown or dark brown, elongated oval, fusiform-shaped. Head dark brown; antennae brown; first segment distinctly thicker than second segment; third segment more than 3X fourth segment in length; fourth segment dark brown; hood brown, middle part distinctly projected. Pronotum reddish-brown to brown, apical part dark brown; paranota reddish-brown, narrow, maximal width from anterolateral margin to inner margin less than the minimal width between paranota, inner margin almost straight, not reaching lateral carina, with three rows of areolae in dorsal view; areolae not consistent in size. FIGURE 4. Dorsal view of hemelytra of Physatocheila spp. : A, Physatocheila koreaensis sp. nov. ; B, Physatocheila distinguenda ; C, Physatocheila fieberi ; D, Physatocheila orientis ; E, Physatocheila smreczynskii . Scale bar: 1 mm. FIGURE 5. Paramere of Physatocheila spp. : A, Physatocheila koreaensis sp. nov. ; B, Physatocheila distinguenda ; C, Physatocheila fieberi ; D, Physatocheila orientis ; E, Physatocheila smreczynskii . Scale bar: 0.1 mm. Hemelytra reddish-brown; distinctly much wider than maximum width of pronotum, outer margin rounded; costal area with various sizes of areolae, with three rows of areolae in basal part, four to five rows in middle part, and two rows in apical part; areolae size of discoidal area subequal to those of subcostal area. Genitalia: paramere scythe-shaped; sensory lobe stout, inner margin straight; apophysis long and sharp ( Fig. 5E ); pygophore angulated; middle part slightly concave in ventral view ( Fig. 6E ). FIGURE 6. Pygophore of Physatocheila spp. : A, Physatocheila koreaensis sp. nov. ; B, Physatocheila distinguenda ; C, Physatocheila fieberi ; D, Physatocheila orientis ; E, Physatocheila smreczynskii . Scale bar: 0.1 mm. Female: Head, pronotum, hemelytra: As in male. Genitalia: not examined Measurements. (3♁♁/ 3♀♀ ). Head width, 0.54–0.58/ 0.57–0.61; vertex width, 0.25–0.28/ 0.27–0.29; lengths of antennal segments I–IV: 0.17–0.19/ 0.19–0.22, 0.12–0.14/ 0.15–0.16, 1.24–1.28/ 1.26–1.30, 0.35–0.38/ 0.37– 0.40; total length of antenna, 1.88–1.99/ 1.97–2.08; pronotum length, 1.52–1.58/ 1.54–1.66; pronotum width (including the posterior margin of paranota), 1.08–1.10/ 1.12–1.14; hemelytra length, 3.08–3.11/ 3.21–3.27; body length, 4.19–4.31/ 4.28–4.35. Distribution. Austria , Belgium , Byelorussia , China , Czech Republic , France , Great Britain , Germany , Hungary , Italy , Kazakhstan (Asian part), Korea , Moldavia , Mongolia , Lithuania , The Netherlands , Norway , Poland , Russia , Slovakia , Slovenia , Spain , Sweden , Ukraine ( Péricart & Golub, 1996 ; Aukema et al . 2013 ). Hosts. Crataegus spp. , Malus spp. , Padus spp. , Prunus domestica , Prunus spinosa , Pyrus spp. , Sorbus spp. (Rosaceae) ( Golub, 1988 ). Material examined. [ CNU ] 6♁♁ 9♀♀ Daesong-san (Mt), Pyongyang , North Korea , 9.xi.1989 , M. Josifov.