Microterys nederlandicus Japoshvili & Soethof 2022, sp. n.

8. Microterys nederlandicus Japoshvili sp. n.

(Figs. 4a–h)

Diagnosis. Female (length about 1.3mm): Body generally black, with metallic sheen; scape dark brown; funicle with first 2 segments more or less brown, rest of segments mostly yellow, with outer aspect of F3 light brown, and outer aspects of F4 and F6 infuscated; clava dark brown; fore coxa with dark spot on the base of dorsal side; mid and hind coxa dark brown; scape a little less than twice as long as broad; pedicel a little less than twice as long as broad, F1 a little shorter than pedicel; frontovertex 0.4× as wide as head width; fore wing about 2.3× as long as broad; fore wing hyaline, with 1 paler band, which is in very slight contrast with densely setose parts; ovipositor slightly exserted, about 0.9× as long as mid tibia; gonostylus about 0.8× as long as mid tibial spur.

Male. unknown.

Female (holotype): length, including ovipositor, 1.33mm; excluding ovipositor, 1.27mm (CPD). (Figs. 4a–c)

Head black, Frontovertex in the area of ocelli with green-golden metallic lustre, head anterior of ocelli and genae with violet-silver metallic lustre; cuticle immediately adjacent to compound eye smooth with green-golden reflection; radicle and scape dark brown; basal half of pedicel dark brown, apical half lighter; first two funicular segments light brown; F3-6 dusky yellow, with outer aspect of F3 light brown, and outer aspects of F4 and F6 infuscated. (Fig. 4a–c); mesosoma dark brown to black with green, gold and violet metallic reflections; pronotum, mesoscutellum and tegulae with violet metallic reflection; mesoscutum, and axilla with mostly greenish metallic reflection; first tergite of gaster, with greenish-violet sheen laterally; midpart of gaster dorsally smoother and shinier than first tergite; fore coxa yellow, slightly darker at the base; midcoxa dark brown with yellow apex; hind coxa completely dark brown; midfemur with faint dark spot laterally near the joint with the coxa; hind femur brown with yellow near joints with coxa and tibia; hind tibia yellow near joint with femur and with a dark brown region subbasally, shading to yellow in its apical half; forewing hyaline, densely setose and therefore appearing darker in distal half, and with distinct curved hyaline band just beyond the stigmal vein formed by smaller, lighter-colored setae; stigmal vein 0.7× as long as forewing; hind wing hyaline.

Frontovertex above scrobes with regular, reticulate sculpture of mesh size clearly not less than eye facet size, ocellar area and face with similar, but more irregular sculpture;; genae and temple with more irregular, reticulate to imbricate-reticulate sculpture; ocellar angle about 100°; occipital margin sharp, more or less carinate; eye reaching occipital margin, and without setae; frontovertex with numerous setae which are at least 2× as long as eye facet; scrobes shallow, ˄-shaped, almost meeting dorsally; antenna as in Fig. 4d, malar suture distinct; mandible (Fig. 4f) with 2 distinct teeth, followed by a slightly wavy truncation, first tooth acutelly pointed, second tooth blunt and rounded;. Relative measurements: HW 76, FV 31, FVL 34, OD 5, POL 15, OOL 4, OCL 5, AOL 9, EL 40, MS 25, SL 35, SW 16, FWL 230, FWW 90; HWL135, HWW 40. Thorax with fine, raised, fairly regular, polygonally reticulate to imbricate-reticulate sculpture on mesoscutum and mesoscutellum of slightly larger mesh size than that on frontovertex; mesoscutellum evenly, slightly convex in profile and with more prominent sculpture than the mesoscutum; setae on mesoscutum about 2× as long as those on frontovertex and distinctly stouter; posterior pair of setae on mesoscutellum about 2.5× as long as those on mesoscutum; mesopleuron not quite touching base of gaster; mid tibia with setae uniform throughout, without a patch of conspicuously denser setae laterally; fore wing with venation and setation as in Fig. 4g; propodeum with 11 or 12 setae adjacent to spiracle. Hypopygium reaching about 0.8× along gaster; ovipositor about 0.9× as long as mid tibia; ovipositor slightly exserted, the exserted part about 0.08× as long as gaster; gonostylus about 0.8× as long as mid tibial spur; outer plates about 2.8× as long as width. Relative measurements: OL 68, GL 15 [MT 75].

Male. Unknown.

Variation. Only holotype examined.

Hosts. Unknown.

Distribution. Netherlands

Material examined: Type material. Holotype: Montferland-Bergherbosch, 51.886, 6.196, sweeping net, 1 female, 31.10.2020, Leg. Rudy Soethof.

Holotype deposited in Naturalis Biodiversity Center, Museum and research in Leiden, the Netherlands.

Comments. Microterys nederlandicus sp. n. is very similar to some other Microterys species, but differs by the characters given in Table 1.

Etymology. The species is named after Nederland, which is Dutch name of Netherlands, where the holotype was collected.