taxonID	type	description	language	source
F7E17B22FA645703BD4C23C63DE4EB7C.taxon	description	Figs 1, 2, 3	en	Kawai, Ryoji, Yoon, Seonwoo, Notton, David G. (2025): A review of Tetramopria (Hymenoptera, Diapriidae, Diapriinae) of the Eastern Palaearctic with notes on mating behaviour and interactions with host ants. Journal of Hymenoptera Research 98: 621-636, DOI: 10.3897/jhr.98.148115
F7E17B22FA645703BD4C23C63DE4EB7C.taxon	diagnosis	Diagnosis. Female flagellum 10 - segmented with 5 - segmented gradually expanded clava; male F 1 about 4.0 times as long as its greatest width. Propleuron smooth and shiny, with a small area of pubescence latero-ventrally (Fig. 1 G). Anterior scutellar pit strongly costate (Fig. 1 C); scutellar disc weakly raised, with a short, blunt keel medially (Fig. 1 C). Mesopleuron with postpectal carina ventrally (Fig. 1 D, white arrow) and broad mesocoxal depression, forming a pronounced ventral concavity in front of mid coxae in lateral view (Fig. 1 B). Male with mid-trochanter expanded, triangular, with mid-tibia strongly twisted. T 2 without subbasal foveae.	en	Kawai, Ryoji, Yoon, Seonwoo, Notton, David G. (2025): A review of Tetramopria (Hymenoptera, Diapriidae, Diapriinae) of the Eastern Palaearctic with notes on mating behaviour and interactions with host ants. Journal of Hymenoptera Research 98: 621-636, DOI: 10.3897/jhr.98.148115
F7E17B22FA645703BD4C23C63DE4EB7C.taxon	distribution	Distribution. Japan (Honshu: Ibaraki, Nagano, Shizuoka, Aichi; Kyushu?) (Notton 1994; Maruyama et al. 2013; Kawai et al. 2024). South Korea, new record. In Maruyama et al. (2013), Kyushu was also listed as a locality. However, this record was not based on specimens, but rather on observations by Dr. T. Komatsu (Dr. Maruyama per. comm.). As we were unable to confirm any specimens from Kyushu, this record needs confirmation.	en	Kawai, Ryoji, Yoon, Seonwoo, Notton, David G. (2025): A review of Tetramopria (Hymenoptera, Diapriidae, Diapriinae) of the Eastern Palaearctic with notes on mating behaviour and interactions with host ants. Journal of Hymenoptera Research 98: 621-636, DOI: 10.3897/jhr.98.148115
10B2044592385221A672A0A548A64EBF.taxon	description	Figs 4, 5	en	Kawai, Ryoji, Yoon, Seonwoo, Notton, David G. (2025): A review of Tetramopria (Hymenoptera, Diapriidae, Diapriinae) of the Eastern Palaearctic with notes on mating behaviour and interactions with host ants. Journal of Hymenoptera Research 98: 621-636, DOI: 10.3897/jhr.98.148115
10B2044592385221A672A0A548A64EBF.taxon	diagnosis	Diagnosis. Frons more convex than for T. aurocincta; female flagellum 10 - segmented with 4 - segmented gradually expanded clava; male F 1 about 2.5 times as long as its greatest width. Propleuron smooth, with sparse short setae latero-ventrally (Fig. 4 G). Anterior scutellar pit more or less costate (Fig. 4 B, D); scutellar disc tectiform, with a sharp medial keel covering its entire length and extending forwards into anterior scutellar pit (Fig. 4 B); scutellar disc emarginate posteriorly. Mesopleuron with scattered hairs in lower half, without pronounced ventral concavity in front of mid coxae. Male mid-trochanter and mid-tibia unmodified. Dorsal part of propodeum deeply foveate posteriorly (Fig. 4 D, white arrow). T 2 with two shallow subbasal foveae, very finely striate inside (Fig. 4 D, green arrow).	en	Kawai, Ryoji, Yoon, Seonwoo, Notton, David G. (2025): A review of Tetramopria (Hymenoptera, Diapriidae, Diapriinae) of the Eastern Palaearctic with notes on mating behaviour and interactions with host ants. Journal of Hymenoptera Research 98: 621-636, DOI: 10.3897/jhr.98.148115
10B2044592385221A672A0A548A64EBF.taxon	description	Description. Female. Body length except ovipositor 2.3 – 2.8 mm. Body black and dark brown, except mandibles, antennae, tegulae and legs brown, scape and antennal club darker. Occipital, metapleural and pronotal pubescence golden, petiolar pubescence white. Head. Head with short, semidecumbent to adpressed setae. Head in dorsal view as long as wide, hexagonal, tapered behind eyes. Head in lateral view slightly longer than high (17: 15), face slightly convex. Occiput with a dense cushion of setae. OOL: POL: LOL = 11: 5: 3. Eye small, its maximum width slightly longer than malar space (23: 21). Pleurostomal distance 0.6 times as long as maximum width of head. Basal margin of mandible costate. Mandible apically bidentate, only overlapping a little. Upper tooth of mandible shorter than lower tooth. Antenna with setae on all segments. Scape compressed, slightly curved, with reticulate-coriaceous sculpture (Fig. 4 F). Pedicel longer than wide (16: 11). F 1 – F 6 gradually widened towards apex. Flagellum with 4 - segmented antennal club, its ventral part with dense sensilla. F 10 conical. Ratios of length to maximum width of each flagellomeres in lateral view: F 1 19: 10; F 2 15: 10; F 3 13: 10; F 4 12: 11; F 5 12: 13; F 6 12: 14; F 7 16: 18; F 8 19: 20; F 9 19: 20; F 10 22: 16. Mesosoma. Mesosoma slightly wider than head (39: 35). Pronotal collar wide, vertical, with a dense cushion of setae, interrupted at top of pronotum (Fig. 4 B). Pronotal shoulder rounded. Lateral part of pronotum smooth and shiny. Propleuron smooth, with sparsely short setae latero-ventrally (Fig. 4 G). Mesoscutum smooth, convex anteriorly, flat posteriorly with 5 – 10 short semidecumbent setae. Anterior scutellar pit transverse, curved, costate, divided into small foveae (Fig. 4 B, D). Scutellar disc weakly convex, sulcate laterally and posteriorly. Medial keel of scutellar disc covering its entire length and extending forwards into anterior scutellar pit. Mesopleuron smooth, without median oblique impression and few scattered setae. Mesopleuron in lateral view convex posteroventrally, in front of mid coxal insertion, not concave like T. tortilis. Metascutellum with strong median keel and lower lateral keel. Metapleuron with short, adpressed setae laterally, and long setae dorsally (Fig. 4 A). Lateral part of propodeum with short, adpressed setae anteriorly, with a band of long setae behind that, and the posterior margin of the propodeum bare. Dorsal area of propodeum with adpressed setae. Medial keel of propodeum simple, strongly developed, raised anteriorly. Propodeum with lateral keel developed, posteriorly produced as a tooth. Posterior margin of propodeum concave. Basal part of all femora compressed and reticulate-coriaceous. Apical part of all femora enlarged and smooth. Basal part of mid and hind tarsi laterally compressed, smooth and shiny. Metasoma. Petiole in lateral view slightly raised, dorsally visible part 1.1 times as long as its maximum width, covered with short adpressed setae anteriorly and longer setae posteriorly. Metasoma in dorsal view about 1.8 times as long as its maximum width, wider than mesosoma (95: 78). Postpetiole comprising six smooth, clearly differentiated tergites. T 2 – T 5 with micropunctation medially (Fig. 4 C). Anterior margin of T 2 slightly concave with two shallow foveae, very finely striate inside. T 3 and T 4 with a pair of setae, T 5 with three pair of setae, T 6 with a pair of spiracles. T 7 with pygostyles surrounded by several setae. Postpetiole comprising five smooth, shiny, clearly differentiated sternites. Anterior margin of S 2 with two deep foveae covered with long setae. S 3 – S 6 covered with micropunctation medially. Posterior part of S 6 with several setae. Ovipositor sometimes slightly exposed.	en	Kawai, Ryoji, Yoon, Seonwoo, Notton, David G. (2025): A review of Tetramopria (Hymenoptera, Diapriidae, Diapriinae) of the Eastern Palaearctic with notes on mating behaviour and interactions with host ants. Journal of Hymenoptera Research 98: 621-636, DOI: 10.3897/jhr.98.148115
10B2044592385221A672A0A548A64EBF.taxon	distribution	Distribution. Japan (Honshu: Aichi, Mie), new record; South Korea (Notton 1994).	en	Kawai, Ryoji, Yoon, Seonwoo, Notton, David G. (2025): A review of Tetramopria (Hymenoptera, Diapriidae, Diapriinae) of the Eastern Palaearctic with notes on mating behaviour and interactions with host ants. Journal of Hymenoptera Research 98: 621-636, DOI: 10.3897/jhr.98.148115
3E25331428435CDFA94EF0BC5A1C8FBD.taxon	diagnosis	Diagnosis. Head in dorsal view hexagonal, tapered behind eyes, without projections or depressions (Figs 1 F, 4 F); antennal shelf prominent; eye small; setae of temple straight and directed downwards; occiput with a dense golden cushion of setae; female flagellum 10 - segmented with 4 - or 5 - segmented expanded clava; F 10 slightly narrower than F 9; male flagellum 12 - segmented, without long whorled setae, F 2 modified. Pronotal collar with a narrow, dense, golden, cushion of setae (Figs 1 C, 4 B); notauli absent; scutellum with anterior scutellar pit; scutellar disc tectiform, with a sharp medial keel or flat to weakly raised, with short, blunt keel (Figs 1 C, 4 B, D). Fore wing without basal vein. Propodeum slightly concave posteromedially, without specialized flanges at sides. Tarsi cylindrical, with tarsomeres about as high as wide. Petiole in lateral view slightly raised, not elevated above level of anterior margin of T 2; anterior margin of T 2 entire, wider than width of petiole. We have followed the interpretation of Tetramopria used by Notton (1994). This concept is very similar to that of Sundholm (1960) who provided a key to separate Tetramopria from Diapria Latreille, 1796, Trichopria Ashmead, 1893 and Viennopria Jansson, 1953, and the concept of Huggert and Masner (1983) who keyed Tetramopria from additional Holarctic genera of myrmecophile Diapriini not covered by Sundholm (1960).	en	Kawai, Ryoji, Yoon, Seonwoo, Notton, David G. (2025): A review of Tetramopria (Hymenoptera, Diapriidae, Diapriinae) of the Eastern Palaearctic with notes on mating behaviour and interactions with host ants. Journal of Hymenoptera Research 98: 621-636, DOI: 10.3897/jhr.98.148115
