Tetramopria Wasmann, 1899

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, pp. 621-636 : 621-636

Tetramopria Wasmann, 1899

Tetramopria Wasmann, 1899: 127. Type species Tetramopria aurocincta Wasmann, 1899.

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).

Remarks.

Based on the original description, Tetramopria castanea (Kieffer, 1911) satisfies the definition of the aurocincta group of Notton (1994); scutellar disc tectiform with a sharp medial keel; female antennal clava four-segmented. Therefore, although the states of the anterior scutellar pit and T 2 are unknown, T. castanea is included in the aurocincta group.

Key to species of the Palaearctic Tetramopria (modified from Notton 1994)

Figures

Figure 1. Tetramopria tortilis male from South Korea (H) and female (A – G) from Japan: A lateral habitus B mesosoma, lateral view C mesosoma, dorsal view D mesosoma, ventral view E antenna, lateral view F head, dorsal view G mesosoma, latero-ventral view H mid leg; white arrows postpectal carina. Scale bars: 1.0 mm (A); 0.5 mm (B, C, E); 0.3 mm (D); 0.2 mm (F, G).

Figure 4. Tetramopria turbinata male from Japan (H), female from South Korea (A – G) and Trichopria drosophilae male from Japan (I): A lateral habitus B mesosoma, dorsal view C tip of metasoma, dorsal view D propodeum, petiole and anterior part of T 2, dorsal view E antenna, lateral view F head, dorsal view G mesosoma, latero-ventral view H trochanter, femur, tibia and basitarsus of mid leg I mid leg; white arrow fovea of propodeum; green arrow fovea of anterior part of T 2. Scale bars: 1.0 mm (A); 0.5 mm (B, E); 0.3 mm (D); 0.2 mm (C, F, G).