A review of the subfamily Methochinae from Taiwan (Hymenoptera: Tiphiidae) with description of a new species and redescription of the known species Author Narita, Keisuke Entomological Laboratory, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Motooka 744, Nishiku, Fukuoka, 819 - 0385, Japan. Author Mita, Toshiharu Entomological Laboratory, Faculty of Agriculture, Kyushu University, Motooka 744, Nishi-ku, Fukuoka, 819 - 0385, Japan. t 3 mita @ agr. kyushu-u. ac. jp text Zootaxa 2021 2021-04-22 4964 2 303 329 journal article 7072 10.11646/zootaxa.4964.2.4 375e7a97-d2f2-423f-abaf-f7a6cf4d6e23 1175-5326 4709412 DF8C0B29-134C-47F8-B1E6-EDBE179D617D 5. Methocha emarginata Lin, 1966 Figs 45–51 Methocha emarginata Lin, 1966: 193–195 . Type locality: Mt. Ali-shan , Chiayi . Fig 5 . Material examined. Type material. Holotype , ♀ , Alt. 2400, Mt. Ali-shan , Chiayi , 20–24.v.1956 , K. S. Lin leg. [ TARI ] . Non-type materials. 1♀ , Fenshuiling , Manchou , Pingtung , 28.iii.2004 , T. Mita leg. [ ELKU ] . Diagnosis. This species can be distinguished from other Asian Methocha species by a combination of the following characters: the smooth frons; the absence of the frontal tubercles; the incurved clypeal apex; the distinguishable mesoscutum and mesoscutellum from each other; the reddish brown mesosoma; the subapical tooth shorter than the apical one on the mandible; the slightly shorter basal tooth than the subapical one on the tarsal claws. Redescription. Female. Head ( Figs 49, 50 ). Head 0.9 times as long as wide in frontal view; temple weakly rounded in dorsal view; ocelli forming regular triangle, POL:AOL:DAO = 1.0:1.0:0.3; vertex sparsely punctate, with smooth interspaces; frons inconspicuously coriaceous and punctate: several punctures larger on vertex, punctures 1.0–5.0 puncture diameters apart, frontal tubercles absent, frontal line absent but medial depression present, reaching clypeus; gena sparsely punctate; clypeus inconspicuously convex, anterior third rugulose, clypeal apex incurved; mandible not distally narrowed, lower tooth longer than upper one; maxillary palpus slightly shorter than pronotum, ratio of length to width of palpomeres III–VI: 3.5:3.5:4.5:10; ratio of length to width of flagellomeres I–III: 1.7:1.0:1.3. Mesosoma ( Figs 47, 48 ). Collar of pronotum costate dorsally; pronotal disc smooth; mesoscutum longitudinally striated, separated from mesoscutellum and mesepisternum by faint groove; mesoscutellum smooth, elevated, rounded in profile, postero-lateral corner with deep notch, suture between mesoscutum and mesoscutellum absent, almost fused but marginal region clearly marked off from them; tegula present; mesepisternum smooth, inconspicuously convex, separated from mesoscutum or mesoscutellum by faint groove; metanotum with anterior crescentic depression, inconspicuously costate on metanotal-propodeal margin; metapleural region slightly coriaceous; propodeum trapezoidal, smooth with sparse punctures, surface around posterior margin faintly rugose. Legs. All tarsal claws ( Fig 51 ) strongly curved in apical half, tridentate, apical tooth sharp, subapical one truncate, shorter than apical one, basal one developed, slightly shorter than subapical one. Metasoma. Oval, polished, sparsely punctate by minute punctures; petiole costate, with rugulose interspaces. Color . Head, flagellomeres VI–X, and metasoma black, maxillary palpus pale yellow, mesosoma reddish brown. Measurements . BL 3.0 mm, HL 0.6 mm , HW 0.7 mm , WF 0.4 mm , EL 0.4 mm , ML 1.3 mm , MW 0.4 mm . Male. Unknown. Distribution. Central and southern Taiwan .