A review of the genus Enicospilus Stephens (Ichneumonidae: Ophioninae) from Vietnam, with descriptions of ten new species Author Pham, Nhi Thi 67079E55-D341-48F2-AEDB-71AA8D40AD2D Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam. Osaka Museum of Natural History, Nagai Park 1 - 23, Higashisumiyoshi-ku, Osaka, Japan. Institute for Agro-Environmental Sciences, NARO, Kannondai 3 - 1 - 3, Tsukuba 305 - 8604, Japan. Laboratory of Insect Biodiversity and Ecosystem Science, Graduate School of Agricultural Science, Kobe University, Kobe, Hyogo, Japan. The Natural History Museum, Cromwell Road, London SW 7 BD, UK. ptnhi2@yahoo.com Author Pham, Phu Van 09B6F968-3B83-4052-89A1-1DB2D91933CF Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam. Osaka Museum of Natural History, Nagai Park 1 - 23, Higashisumiyoshi-ku, Osaka, Japan. Institute for Agro-Environmental Sciences, NARO, Kannondai 3 - 1 - 3, Tsukuba 305 - 8604, Japan. Laboratory of Insect Biodiversity and Ecosystem Science, Graduate School of Agricultural Science, Kobe University, Kobe, Hyogo, Japan. The Natural History Museum, Cromwell Road, London SW 7 BD, UK. phamphu93.k56@gmail.com Author Matsumoto, Rikio 9D30E868-4C4B-4F40-A6C8-781F185FA0E4 rikio@mus-nh.city.osaka.jp Author Shimizu, So D60BFE76-B686-4FB2-A720-A02DE0A2C2B1 parasitoidwasp.sou@gmail.com Author Broad, Gavin R. D06689DE-526F-4CFA-8BEB-9FB38850754A g.broad@nhm.ac.uk text European Journal of Taxonomy 2023 2023-06-12 873 1 1 151 http://dx.doi.org/10.5852/ejt.2023.873.2133 journal article 54010 10.5852/ejt.2023.873.2133 6b60ec14-d9a3-4400-b636-bb3ee16094b7 2118-9773 8038022 099F6A49-6516-4F39-9E20-A077A5D60535 Enicospilus centraliscleritiger sp. nov. urn:lsid:zoobank.org:act: EC337820-8FBE-4ED4-B8C9-F0E9494E83C1 Fig. 16 Diagnosis Interocellar area reddish brown; clypeus convex, ventral margin blunt; mandible twisted ca 20°, outer surface without a diagonal setose groove; fore wing fenestra with only central sclerite present, small, circular to oval, vein 1m-cu&M sinuate, angled medially. Differential diagnosis The new species has only one circular to oval central sclerite similar to E . abessyniensis (Szépligeti, 1907) from the Afrotropical region and Sri Lanka . It differs from the latter by the position of the central sclerite (centrodistal vs central), vein 2r&RS less sinuate and vein 1m-cu&M strongly sinuate, angled medially. Etymology The adjective belonging to the Latin neuter noun ‘ centrum ʼ is ‘ centralis , - is , - e ʼ. Combined with the sclerite, the specific epither ‘ centraliscleritiger ʼ meaning ‘bearing a central scleriteʼ, referring to the appearance of the fore wing, which has only a central sclerite. Material examined Holotype VIETNAM • ♀ ; Tuyen Quang Province , Na Hang , Son Phu ; 10 Jun. 2017 ; Khuat D.L. leg.; Malaise trap ; IEBR . Paratype VIETNAM • 1 ♂ ; Gia Lai Province , Kon Chu Rang NP ; 27 Apr. 2016 ; Nguyen T.P.L. leg.; light trap ; IEBR . Description Female ( holotype ) MEASUREMENTS. Body length 26.1 mm , fore wing length 17.5 mm . HEAD with FI = 0.7, GOI = 4.0 ( Fig. 16d ). Lower face 0.7 × as wide as high, shiny, finely punctate ( Fig. 16b ). Clypeus 1.4× as wide as high, moderately convex in profile, sparsely punctate, ventral margin blunt ( Fig. 16b ). Malar space 0.3× as long as basal mandibular width ( Fig. 16b ). Mandible twisted by ca 20°, evenly narrowed, outer surface without diagonal setose groove. Upper tooth of mandible about 1.3× as long as lower tooth ( Fig. 16b ). Frons, vertex and gena shiny with fine setae ( Fig. 16c ). Posterior ocellus close to eye ( Fig. 16c ). Occipital carina complete, ventral end meeting hypostomal carina at about 1.0× basal mandible width from base of mandible. Antenna with 65 flagellomeres; F1 1.9× as long as F2; F20 2.3 × as long as wide. MESOSOMA. Moderately shiny ( Fig. 16e ). Pronotum finely striate ( Fig. 16e ). Mesoscutum 1.4× as long as maximum width, evenly rounded in profile. Notaulus absent. Scutellum moderately convex, with irregular rugae, lateral longitudinal carinae along entire length of scutellum. Epicnemium matt, densely punctate ( Fig. 16e ). Epicnemial carina moderately strong, dorsal end bent to reach anterior margin of mesopleuron ( Fig. 16e ). Mesopleuron entirely transversely striate ( Fig. 16e ). Submetapleural carina broadened anteriorly ( Fig. 16e ). Metapleuron strigose ( Fig. 16e ). Propodeum evenly rounded in profile; anterior transverse carina complete; anterior area longitudinally striate; spiracular area smooth; posterior area coarsely rugose; propodeal spiracle elliptical, joined by ridge to pleural carina ( Fig. 16e ). Fig. 16. Enicospilus centraliscleritiger sp. nov. , holotype, ♀ (IEBR). a . Habitus. b . Head, frontal view. c . Head, dorsal view. d . Head, lateral view. e . Mesosoma, lateral view. f . Central part of fore wing. Scale bars = 1.0 mm. WINGS ( Fig. 16f ). Fore wing with AI = 0.83, CI = 0.40, DI = 0.39, ICI = 0.83, SDI = 1.43, SI = 0.24, SRI = 0.34; vein 1m-cu&M strongly sinuate, angled medially; vein 2r&RS slightly sinuate; vein RS rather evenly curved; fenestra and sclerites of discosubmarginal cell as in Fig. 16f ; proximal and distal sclerites absent; central sclerite nearly oval in shape, pigmented, positioned in centrodistal part of fenestra; proximal corner of marginal cell evenly setose; posterodistal corner of second discal cell ca 100° and of subbasal cell ca 95°; vein 1cu-a antefurcal to M&RS by 0.2× length of 1cu-a. Hind wing with NI = 2.0; vein RS relatively straight; vein RA with 9 uniform hamuli. LEGS. Hind leg with coxa in profile 1.8× as long as high; basitarsus 2.0× as long as second tarsomere; fourth tarsomere 2.6× as long as wide; tarsal claws simply pectinate. METASOMA. With DMI = 1.4, PI = 2.8, THI = 2.7; thyridium oval; ovipositor sheath not longer than posterior height of metasoma. COLOUR ( Fig. 16a ). Reddish brown except for apex of mandible and posterior 0.6 of T3 onwards black. Wings hyaline; central sclerite pigmented and amber; veins and pterostigma dark brown. Variation in female Unknown. Male Similar to female, except for following characters: F1 2.0× as long as F2, F20 1.8 × as long as wide, FI = 0.7; fore wing length 15.8 mm , AI = 0.90, CI = 0.44, DI = 0.40, ICI = 0.90, SDI = 1.60, SI = 0.23, SRI = 0.27, vein 1m-cu&M with short ramellus, central sclerite circular; metasoma with DMI = 1.3, PI = 2.6, THI = 3.0. Distribution Currently known from Tuyen Quang Province in the northeast and Gia Lai Province , the Central Highlands of Vietnam .