Allanagrus occidentalis Huber & Triapitsyn

Huber, John T. & Triapitsyn, Serguei V., 2017, Two genera of Mymaridae (Hymenoptera) new to Africa, a remarkable new species of Anaphes and new generic synonymy, ZooKeys 658, pp. 39-61 : 47-48

Allanagrus occidentalis Huber & Triapitsyn sp. n. Figs 25-26, 27, 28, 29-31

Type material.

Holotype female (BMNH) on slide (Fig. 31) labelled: 1. " Allanagrus occidentalis Huber & Triapitsyn ♀ dorsal Holotype". 2. "Gabon, Forêt de la Mondah, 15-25 km N of Libreville, 25.xi-3.xii.1987 J.S. Noyes. MT". 3. "Mounted by V. Berezovskiy 1999 Canada balsam".

Diagnosis.

Features that together distinguish Allanagrus occidentalis from other described species of Allanagrus (all of which occur in the Australian or Oriental regions) are: body small; fl1 and fl2 together shorter than either pedicel or fl3 (Fig. 26); and ovipositor shorter than metatibia and scarcely exserted beyond apex of gaster.

Description.

Female. Body length 450 (mesosoma + metasoma only). Head, midlobe of mesoscutum and metasoma brown; mesosoma mostly, antenna, and legs light brown or yellowish; wings mostly with faint brown suffusion except fore wing with oval hyaline area in about apical third.

Head. Head width 210. Subantennal groove ventral to each torulus present but apparently faint (Fig. 25). Mandible apparently with 2 distinct ventral teeth and a dorsal serrated edge.

Antenna. Funicle without mps on fl1 and fl2, and with 1 mps on fl3-fl6 (Fig. 26); clava with at least 3 mps, apparently 1 on each of segments 1-3 (possibly more on each segment but clava mounted in dorsal view and not clearly visible). Scape with row of several setae along ventral margin. Measurements (length/width) of antennal segments: scape 68/18, pedicel 38/21, fl1 15/9, fl2 17/10, fl3 37/13, fl4 36/13, fl5 34/13, fl6 34/14, entire clava 100/≈18 (clava oriented in mostly dorsal view so appears narrow) with segments 1-3 (measured along dorsal margin) 39, 24, and 41, respectively. Length/width ratios of antennal segments: scape 3.84, pedicel 1.81, fl1 1.65, fl2 1.72, fl3 2.91, fl4 2.70, fl5 2.61, fl6 2.47, entire clava ≈5.53.

Mesosoma. Mesoscutum with oblique reticulate sculpture on lateral lobe and most of midlobe except posteromedially where sculpture is longitudinal. Scutellum with mainly oblique sculpture on anterior scutellum and with longitudinal reticulate sculpture on frenum. Dorsellum with campaniform sensilla in contact with anterior margin (Fig. 27, arrows indicate sensilla) and with a seta on each side at lateral margin.

Wings. Fore wing with microtrichia somewhat scattered, present behind parastigma and more evenly distributed in apical 0.4, but absent just beyond apex of venation and in the middle of the hyaline oval area (Fig. 28). Hind wing with a few microtrichia on surface near wing between the usual anterior and posterior rows. Fore wing length 463, width 75, length/width 6.16, longest marginal setae 146. Hind wing length 443, width 20, longest marginal setae 103.

Metasoma. Ovipositor length 134, 0.79 × as long as metatibia length (168) and barely exserted beyond apex of gaster (Figs 29, 30).

Male. Unknown.

Derivation of species name.

The species is the first Allanagrus reported from Africa and is named from Latin, occidens -tis meaning west, because it is by far the most westerly occurring species known for the genus.