Polynema ( Polynema ) gongliuense Sharengaowa & Aishan, 2025

Polynema ( Polynema) gongliuense Sharengaowa & Aishan sp. nov.

Fig. 2 View Figure 2

Type material.

Holotype: • ♀ ( ICXU) on slide (Fig. 2 L View Figure 2 ): China, Xinjiang, Gongliu , 43°13'34"N, 82°43'15"E, 5.V.2018, Qin Li et al., sweeping GoogleMaps . Paratypes (all in ICXU): China, Xinjiang: • 1 ♀, Gongliu , 43°13'34"N, 82°43'15"E, 5.V.2018, Zhulidezi Aishan et al., sweeping GoogleMaps ; • 1 ♀, Yuli , 41°25'12"N, 86°14'24"E, 26.VII.2021, Zhulidezi Aishan et al., sweeping GoogleMaps .

Diagnosis.

Antenna (Fig. 2 C View Figure 2 ) scape with cross-ridges (Fig. 2 C, D View Figure 2 ); F 4 and F 5 subequal in length and shorter than F 6; F 6 with one mps; clava shorter than combined length of three preceding flagellomeres and shorter than combined length of F 1 – F 3, with six mps. Mesoscutum with conspicuous reticulate sculpture; pronotum (Fig. 2 E View Figure 2 ) with three setae on each side along the anterior margin; propodeum (Fig. 2 G View Figure 2 ) without median carina; forewing with hypochaeta extending to posterior margin of forewing (Fig. 2 H, I View Figure 2 ). Ovipositor (Fig. 2 K View Figure 2 ) exserted beyond gastral apex by 0.3 × (0.2–0.3 ×) its own total length.

Description.

Female ( holotype and paratypes). Body length 1560–1700 μm ( n = 3). Body (Fig. 2 A View Figure 2 ) black; scape and pedicel yellowish-brown, clava dark brown, legs pale brown.

Head (Fig. 2 B View Figure 2 ) in frontal view 0.8 × (0.8–1.2 ×) as high as wide. Antenna (Fig. 2 C View Figure 2 ) scape with cross-ridges, 2.7 × (2.0–2.7 ×) as long as wide (including short radicle), scape longer than pedicel, 1.7 × (1.5–1.7) as long as pedicel; pedicel smooth, 1.9 × (1.5–1.9 ×) as long as wide, 1.3 × (1.3–1.6 ×) as long as F 1; F 1 the shortest and F 2 the longest funiculars; F 4 and F 5 subequal in length and shorter than F 6; F 6 with one mps; clava 3.6 × (3.4–3.6 ×) as long as wide, shorter than combined length of three preceding flagellomeres and shorter than combined length of F 1 – F 3, with six mps.

Mesosoma 1.5 × (1.5–1.7 ×) as long as wide; mesoscutum with conspicuous reticulate sculpture; scutellum and propodeum smooth; pronotum (Fig. 2 E View Figure 2 ) divided mediolongitudinally, with three setae on each side along the anterior margin; mesoscutum (Fig. 2 F View Figure 2 ) 0.7 × as long as wide, longer than scutellum; scutellum (Fig. 2 F View Figure 2 ) 0.6 × (0.6–0.8 ×) as long as wide; frenum short, separated from scutellum by a row of small foveae; propodeum (Fig. 2 G View Figure 2 ) without median carina. Forewing (Fig. 2 H View Figure 2 ) 4.1 × (4.1–4.3 ×) as long as wide; disc hyaline, densely setose beyond venation, with discal setae originating behind stigmal vein (Fig. 2 I View Figure 2 ), many of them 6.1–7.3 μm long; forewing marginal hairs are significantly shorter; longest marginal seta 0.6 × greatest width of forewing; hypochaeta extending to posterior margin of forewing (Fig. 2 H, I View Figure 2 ). Hind wing (Fig. 2 J View Figure 2 ) 50.6 × (48.8–50.6 ×) as long as wide; disc hyaline, with two rows of setae; longest marginal seta 6.5 × (6.1–6.5 ×) greatest width of hind wing.

Metacoxa (Fig. 2 K View Figure 2 ) smooth, in lateral view ~ 0.9 × as long as petiole; petiole (Fig. 2 K View Figure 2 ) ~ 2.0 × (2.0–2.5 ×) as long as wide, in dorsal view without vertical striations and expanded basally. Ovipositor (Fig. 2 K View Figure 2 ) 1.3 × (1.2–1.4 ×) as long as gaster, exserted beyond gastral apex by 0.3 × (0.2–0.3 ×) its own total length; ovipositor 2.8 × (2.5–2.8 ×) length of mesotibia and 2.4 × length of metatibia.

Measurements of the holotype (μm). Head height: width: 93: 114; mesosoma (in dorsal view) length: width: 216: 148; mesoscutum length: width: 87: 125; scutellum length: width: 53: 88; median carina length: 20; petiole length: width: 69: 35; gaster length: width: 369: 181; ovipositor length: 480; exserted part of ovipositor: 123; antennal segments length: width: scape: 64: 24; pedicel: 38: 20; F 1: 29: 8; F 2: 60: 8; F 3: 51: 7; F 4: 34: 9; F 5: 36: 11; F 6: 41: 14; clava: 86: 24; forewing length: width: 656: 161; longest marginal seta length: 101; discal setae length: 6–7; hind wing length: width: 506: 10; longest marginal seta length: 65; mesotibia length: 173; metatibia length: 203.

Male. Unknown.

Hosts.

Unknown.

Etymology.

This species is named after its type locality.

Distribution.

China ( Xinjiang).

Comments.

This species is relatively large in size (body length 1560–1700 μm). Its type specimens were collected in Gongliu County in Xinjiang at an altitude of 1220 m and in Yuli County at 890 m. The species has cross-ridges on the scape, a feature that is relatively rare within the subgenus. The marginal hairs on the forewings are significantly shorter than those of other, similar species.

Polynema ( Polynema) gongliuense is very similar to the European P. ( Polynema) valkenburgense Soyka in the following: the scape has distinct cross-ridges; F 6 with one mps; the longest marginal setae on the forewing are shorter than the maximum wing width; and the ovipositor is distinctly exserted. The difference between them is as follows: the forewing 4.1 × as long as wide in the former but 3.5 × in the latter species; the longest marginal seta 0.6 × greatest width of forewing in the former but 0.2 × in the latter species; F 3 shorter than scape in the former but subequal in length in the latter species. Propodeum without median carina in the former but with a short median carina in the latter species ( Soyka 1950).