Platystethynium, Ogloblin, 1946

Triapitsyn, Serguei V., Dominguez, Chrysalyn, Ortis, Giacomo & Uliana, Marco, 2024, A remarkable new species of Platystethynium Ogloblin (Hymenoptera: Mymaridae) with apterous females from Italy, Journal of Natural History 58 (45 - 48), pp. 2207-2217 : 2209-2210

publication ID	https://doi.org/10.1080/00222933.2024.2415061
DOI	https://doi.org/10.5281/zenodo.14396740
persistent identifier	https://treatment.plazi.org/id/F512F15E-FF9A-FFF8-5CEA-F9A0E0893CD4
treatment provided by	Plazi (2024-11-29 00:02:36, last updated 2024-12-11 19:45:22)
scientific name	Platystethynium
status

Treatment

Key to species of Platystethynium

(subgenus Platystethynium ) in the Old World, females

1 Head in dorsal view at least as long as wide; body strongly flattened ( onomarchicidum species group); F3 without mps .................................................................................................... 2

– Head in dorsal view wider than long; body at most a little flattened ( Figure 4 View Figure 4 (a)) ( triclavatum species group) (Europe); F3 with mps ...................................................................... ................................................. P. (Platystethynium) triclavatum ( Donev and Huber 2002)

2(1) F5 much larger than F6 ( Triapitsyn 2018, p. 161, fig. 105); macropterous ( Figure 4 View Figure 4 (a)); ovipositor at least about 1.8 times length of metatibia and notably exserted beyond apex of gaster (Oriental region) ........................................................................................................... ........................................................... P. (Platystethynium) onomarchicidum Ogloblin 1946

F5 almost as large as F6 ( Figure 2 View Figure 2 (b)); apterous ( Figures 2 View Figure 2 (c) and 3(a–c)); ovipositor ( Figure 1 View Figure 1 (b)) about 0.9 times length of metatibia and not exserted beyond apex of gaster (Europe) .............................................. P. (Platystethynium) apteron Triapitsyn , sp. n.

References

Donev A, Huber JT. 2002. Pseudocleruchus triclavatus Donev and Huber, gen. and sp. nov. (Hymenoptera: Mymaridae), with notes on the Cleruchus - group of genera. In: Melika G, Thuroczy C, editors. Parasitic wasps: evolution, systematics, biodiversity and biological control. Budapest (Hungary): Agroinform Kiado & Nyomda KFT; p. 117 - 123.

Ogloblin A. 1946. Descriptions of new genera and species of Mymaridae (Hymenoptera: Chalcidoidea). Iowa St Coll J Sci. 20 (3): 277 - 295.

Triapitsyn SV. 2018. An annotated checklist of Mymaridae (Hymenoptera: Chalcidoidea) in Taiwan, with descriptions of five new species. J Taiwan Agric Res. 67 (2): 113 - 165.

Figures

Figure 1. Platystethynium (Platystethynium) apteron, holotype female: (a) slide; (b) habitus in dorsal view.

Figure 2. Platystethynium (Platystethynium) apteron, female: (a) head in dorsoventral view (holotype); (b) antenna (holotype); (c) habitus in dorsolateral view (dry-mounted paratype).

Figure 4. (a) Platystethynium (Platystethynium) triclavatum, habitus of female in lateral view (molecular voucher specimen in ethanol from Monte Venda, Euganean Hills, Veneto, Italy); (b, c) opposite sides of the two Tettigoniidae eggs with exit holes of parasitoids found in the same soil sample together with the type series of P. (Platystethynium) apteron: a lighter and narrower egg of Eupholidoptera schmidti on the left and a darker and wider egg of Barbitistes vicetinus on the right.