Zachterbergius Fernandez-Triana gen. n.

Type species.

Zachterbergius tenuitergum Fernandez-Triana & Boudreault, here designated.

Diagnostic description.

Labial palpi very long, extending to mesopleuron (Fig. 46A, B). Upper margin of face produced dorsally between the antennal insertions into a small triangular flange which has a median carina (Fig. 46B). Scape relatively very transverse (Fig. 46B). Flagellomere with two rows of placodes. Polished band of scutellum interrupted medially by band of rugosity (Figs 46E, F, 47B). Propodeum with clearly defined median carina and partially defined transverse carina and apical part of an areola (Figs 46E, F, 47A, B). Fore wing with quadrangulate areolet (Fig. 46C). T1 with broad depression on anterior half (Figs 46D, 47A, B). T2 longest and thinnest of Microgastrinae (T2 L 4.0 × its width at base and apex, T2 0.7-0.8 × as long as T1 L, T2 around 1.5 × as long as T3 L) (Figs 46D, E, 47A, B).

Putative autapomorphies and potentially related genera.

The relationships of Zachterbergius with other genera of Microgastrinae are not clear at present. The length of T2 is unique among known species of Microgastrinae . The propodeum carination pattern is uncommon in the subfamily, as are the scape shape and elongate labial palpi. The available barcode sequence is also very different from all other known barcodes within the subfamily.

Biology.

Host unknown.

Distribution.

The only known species is found in the Oriental region (Thailand).

Molecular data.

A single sequence is available, representing BIN BOLD:AAV2126, which is 15.6% different than the closest sequence available in BOLD.

Etymology.

The genus name refers to and honors the Dutch braconid expert Kees van Achterberg, in recognition of his significant contributions to the knowledge of Braconidae of the world, as well as other Hymenoptera groups. Over the years Kees has been a dear friend, mentor and colleague of the first author, and has kindly supported his work on Microgastrinae . The letter “Z” was added at the beginning of the name to guarantee the uniqueness of the name and avoid potential homonyms -due to the large number of taxa named after Kees van Achterberg. The gender of the genus is neuter.

Species.

Only one species is known.