Platystethynium, Ogloblin, 1946

Huber, John T., Read, Jennifer D. & Triapitsyn, Serguei V., 2021, Illustrated key to the genera and catalogue of Mymaridae (Hymenoptera) in the Afrotropical region, Zootaxa 5036 (1), pp. 1-166 : 42

PLATYSTETHYNIUM Ogloblin, 1946

( Figs 222–231 )

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

Platypatasson Ogloblin, 1946: 293 . Type species: Platypatasson fransseni Ogloblin, 1946 , by original designation. Synonymy under Cleruchus by Schauff, 1984: 43; synonymy under Platystethynium by Donev & Huber, 2002: 118; revised status as subgenus under Platystethynium by Huber et al., 2020: 289 (Nearctic genera and catalogue).

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

Diagnosis. Body dorsoventrally flattened; face strongly produced anteriorly, in lateral view head almost triangular; female antenna with funicle segments about as long as wide and clava 2- or 3-segmented ( Figs 223 , 228 ); fore wing narrow, parallel sided or almost so ( Figs 224 , 229 ); ovipositor short, originating in about apical half of gaster ( Figs 226 , 231b ).

Discussion. Platystethynium belongs to the Cleruchus group of genera. In the Afrotropical region the Cleruchus group also includes Cleruchoides , Cleruchus and Eubroncus . Huber et al. (2020) had placed Platystethynium in the Anagrus group because of the longitudinally divided frenum but on balance of features it is better placed in the Cleruchus group. In Platystethynium (Platystethynium) the clava is 3-segmented ( Fig. 228 ) whereas in Platystethynium (Platypatasson) the clava is 2-segmented ( Fig. 223 ); both subgenera occur in the Afrotropical region.

Afrotropical hosts. Unknown.

Distribution. No named species in the Afrotropical region. Specimens examined are from Guinea, Ivory Coast and Nigeria (CNC).

Important references. Huber et al. (2020), Ortis et al. (2020).

Figures

FIGURES 222–224. Platystethynium (Platypatasson) sp. 222, head, dorsal; 223, antenna; 224, wings. Scale bars: 222 = 100 μm; 223, 224 = 500 μm.

FIGURES 225, 226. Platystethynium (Platypatasson) sp. 225, mesosoma, dorsal; 226, metasoma with genitalia seen through gaster. Scale bars = 100 μm.

FIGURES 227–229. Platystethynium (Platystethynium) sp. 227, head, dorsal; 228, antenna; 229, wings. Scale bars: 227 = 100 μm; 228, 229 = 500 μm.

FIGURES 230, 231. Platystethynium (Platystethynium) sp. 230, mesosoma, dorsal; 231a, metasoma, dorsal; 231b, metasoma, with genitalia seen through gaster. Scale bars = 100 μm.