Platystethynium, Ogloblin, 1946

Huber, John T., Read, Jennifer D. & Triapitsyn, Serguei V., 2020, Illustrated key to genera and catalogue of Mymaridae (Hymenoptera) in America north of Mexico, Zootaxa 4773 (3), pp. 1-411 : 289-292

publication ID

https://doi.org/ 10.11646/zootaxa.4773.1.1

publication LSID

lsid:zoobank.org:pub:B1D8D67C-4FDC-477E-872F-E8BCD4D027FB

DOI

https://doi.org/10.5281/zenodo.3844802

persistent identifier

https://treatment.plazi.org/id/038A0765-FEF6-B853-48D5-FE438888F816

treatment provided by

Plazi

scientific name

Platystethynium
status

 

PLATYSTETHYNIUM View in CoL View at ENA ( PLATYPATASSON Ogloblin, 1946 ), stat. rev.

( Figs 800 View FIGURE 800 –811)

Platystethynium Ogloblin, 1946: 290 View in CoL . Type species: Platystethynium onomarchicidum Ogloblin, 1946 View in CoL , by original designation. Platypatasson Ogloblin, 1946: 293 . Type species: Platypatasson fransseni Ogloblin, 1946 , by original designation. Synonymy

by Donev & Huber, 2002: 118.

Diagnosis. Body length 435–655 μm. Head in lateral view longer than high ( Figs 800–803 View FIGURE 800 View FIGURES 801–803 ), with face strongly projecting anteriorly and mouthparts in almost same plane as toruli ( Fig. 804 View FIGURES 804–806 ); vertex with conspicuous, long setae next to eye ( Figs 802–804 View FIGURES 801–803 View FIGURES 804–806 ); funicle segments shorter than wide ( Fig. 805 View FIGURES 804–806 ); clava 2-segmented ( Fig. 805 View FIGURES 804–806 ); fore wing narrow and parallel-sided ( Fig. 806 View FIGURES 804–806 ); frenum longitudinally divided medially ( Fig. 807 View FIGURES 807, 808 ).

Discussion. Cleruchus and Platystethynium (Platypatasson) belong to the Cleruchus group of genera, which consists of species with dorsoventrally flattened bodies, claval segments quadrate or shorter than wide and head in lateral view bluntly triangular, with face strongly projecting anteriorly so toruli well anterior to the mouthparts. This group could be treated as a subgroup within a larger Anagrus group of genera depending on which features are used to define the Anagrus group. Donev & Huber (2002) treated Platypatasson as a synonym of Platystethynium rather than of Cleruchus as proposed by Schauff (1984). The frenum is entire in Cleruchus but longitudinally divided in both the former genera. Similarities in head structure, as well as their hosts ( Orthoptera ), also suggest a closer relationship of Platypatasson to Platystethynium and perhaps Anagrus , Omyomymar , Schizophragma and Stethynium than to Cleruchus , which are parasitoids of Coleoptera . Here we give Platypatasson subgeneric status as Platystethynium (Platypatasson) , stat. rev., because the of their different number of claval segments, just as was done for A. ( Anaphes ) and Anaphes (Patasson) . Only the subgenus Platypatasson occurs in the Nearctic.

Nearctic hosts. Unknown. Extralimital hosts are Orthoptera : Tettigoniidae ( Ogloblin 1946) .

Important reference. Ogloblin (1959b).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Mymaridae

Loc

Platystethynium

Huber, John T., Read, Jennifer D. & Triapitsyn, Serguei V. 2020
2020
Loc

Platystethynium

Ogloblin, A. A. 1946: 290
Ogloblin, A. A. 1946: 293
1946
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