Platystethynium, Ogloblin, 1946

Huber, John T., Read, Jennifer D. & Triapitsyn, Serguei V., 2024, Illustrated key to the genera and catalogue of Mymaridae (Hymenoptera) in the Neotropical region, Zootaxa 5557 (1), pp. 1-263 : 90-91

PLATYSTETHYNIUM Ogloblin, 1946

( Figs 263–265 )

Platystethynium Ogloblin, 1946: 290 . Type species: Platystethynium onomarchicidum Ogloblin, 1946 , by original designation.

Platypatasson Ogloblin, 1946: 293 . Type species: Platystethynium fransseni Ogloblin, 1946 , by original designation. Synonymy by Donev & Huber, 2002: 118.

Parastethynium Ogloblin, 1964b: 106 . Lapsus for Platystethynium .

Pseudocleruchus Donev & Huber, 2002: 118 . Type species: Pseudocleruchus triclavatus Donev & Huber, 2002 , by original designation. Synonymy by Ortis et al., 2020: 10.

Diagnosis. Body dorsoventrally flattened; face strongly produced anteriorly, in lateral view head almost triangular ( Fig. 265 ); clava 2-segmented; funicle segments about as long as wide ( Fig.265 ); fore wing narrow, parallel sided ( Fig. 263 ); ovipositor short, originating in about apical half of gaster ( Fig. 265 ).

Remarks. Platystethynium belongs to the Cleruchus group of genera. Huber et al. (2020) had placed Platystethynium in the Anagrus group because of the longitudinally divided frenum but on balance of features it seems better placed in the Cleruchus group. Both groups of genera are likely closely related. In Platystethynium (Platystethynium) the clava is 3-segmented but no species are yet known for certain from the Neotropical region, whereas in Platystethynium (Platypatasson) the clava is 2-segmented ( Fig. 265 ). Platystethynium differs from Cleruchus and Cleruchoides in having the scutellum longitudinally divided medially and the propodeum with Ylike submedian sulci ( Fig. 264 ).

Neotropical hosts. Unknown.

Important reference. Huber et al. (2020).

Figures

FIGURES 263–265. Platystethynium vagatum (Ogloblin). 263, wings; 264, body, dorsal; 265, habitus (wings removed), lateral.