Gilbertnixonius biem Fernandez-Triana & Boudreault, 2018

Fernandez-Triana, Jose L & Boudreault, Caroline, 2018, Seventeen new genera of microgastrine parasitoid wasps (Hymenoptera, Braconidae) from tropical areas of the world, Journal of Hymenoptera Research 64, pp. 25-140 : 53-54

Gilbertnixonius biem Fernandez-Triana & Boudreault sp. n.

Fig. 13

Holotype.

Female, Thailand, QSBG.

Holotype labels.

THAILAND: Suphanburi/Pu Toei Nat. Park/Huai-Tapern, by waterfall/ 14°58.934'N, 99°19.31'E /Malaise trap, 14-21.2009/P. Wangkum, #3834. Second label: Philoplitis /sp. jft 1. Third label: DNA Voucher/CNCHYM/01950.

Holotype locality.

THAILAND: Suphanburi, Pu Toei National Park, Huai-Tapern, by waterfall, 4°58.934'N, 99°19.31'E.

Diagnosis.

This is the only known species in the genus so far, thus the generic diagnosis works as the species diagnosis as well.

Description.

Female. Body mostly dark brown; palpi, scape, pedicel, most of first two pairs of legs, metacoxa, metafemur, first few laterotergites and sternites white or yellow-white; antenna with a subtle banded pattern, with first 10 flagellomeres yellow to light brown, and apical flagellomeres brown; wings hyaline, with most veins light brown, pterostigma mostly white-yellow (except for posterior 0.3 which is light brown). Head with relatively large tentorial pits (which reach well into mesopleuron). Occipital carina defined laterally (not clear in specimen if also defined dorsally). Epicnemial carina partially defined. Meso- and metapleura strongly sculptured, mostly by transverse striation. Anteromesoscutum and scutellar disc mostly sculptured with strong punctures. Scutellar disc with sharp carina around margins and slightly protruding posteriorly. Scutellar disc with rugose band of sculptured postero-medially. Propodeum with median longitudinal and transverse carinae strongly defined. Fore wing with relatively small, quadrangular areolet. Hind wing with vannal lobe entirely setose. Metacoxa relatively short, not surpassing posterior margin of T2. Metatibia spines relatively short (around 0.3 × length of first segment of metatarsus). T1 with median sulcus on anterior half, posterior half relatively strongly sculptured. T2 sub-quadrate, with longitudinal striae. Hypopygium relatively short, not extending beyond last tergites. Ovipositor very short, ovipositor sheaths with very few and sparse setae near apex.

Body measurements (mm).

F2 L: 0.20; F3 L: 0.19; F14 L: 0.10; F15 L: 0.10; Malar sulcus L: 0.09; Mandible W: 0.08; T1 L: 0.32; T1 W at posterior margin: 0.12; T1 maximum W: 0.16; T2 W at anterior margin: 0.13; T2 W at posterior margin: 0.17; T2 L: 0.12; Metafemur L: 0.59; Metafemur W: 0.18; Metatibia L: 0.79; Inner spur L: 0.11; Outer spur L: 0.09; First segment of Metatarsus L: 0.32; Ovipositor sheaths L: 0.14; Body L: 2.13; Fore wing L: 2.14.

Male. Unknown.

Biology.

Host unknown.

Distribution.

Thailand.

Molecular data.

The DNA barcode of the holotype specimen (BIN BOLD:AAZ9883) is very unique, 13.2% different from the closest Microgastrinae sequence in BOLD.

Etymology.

Named after the Natural History Museum in London (United Kingdom) in recognition of the outstanding and important collection of 34+ million insect specimens that institution holds, including one of the largest and most complete Microgastrinae collection in the world. The old acronym of the Natural History Museum (British Museum until 1992) was commonly referred to as “BM” at the time, which is pronounced in English as “Bee-Em”, approximately the same as the pronunciation in Latin of the species name " Gilbertnixonius biem " would be.

Figures

Figure 13. Gilbertnixonius biem female holotype. A Fore wing B Habitus C Head frontal D Mesosoma and metasoma, lateral E Head dorsal F Mesosoma dorsal G Propodeum and metasoma, dorsal.