Diaulinopsis altunensis Kang & Hu, 2025

Kang, Ning & Hu, Hong-Ying, 2025, Biological resources of Eunotidae, Herbertiidae, Pteromalidae and Eulophidae (Hymenoptera, Chalcidoidea) from the Altun Mountain National Nature Reserve, China, with description of ten new species, ZooKeys 1233, pp. 31-54 : 31-54

Diaulinopsis altunensis Kang & Hu sp. nov.

Fig. 9 A – G

Material examined.

Holotype. • ♀, China, Xinjiang, Ruoqiang, Altun Mountain Nature Reserve , 38°5'37.572"N, 89°16'17.1372"E, Altitude: 3471.91 m, 15.VII.2020. Coll. Ning Kang, by sweeping net . Paratypes. • 1 ♀ 2 ♂, 37°49'28.8588"N, 89°9'9.5328"E, Altitude: 4237.16 m, 12.VII.2020. Coll. Ning Kang, by sweeping ; • 1 ♂, 37°48'14.2092"N, 89°54'41.2884"E, Altitude: 3449.93 m, 12.VII.2020, by net sweeping ; • 1 ♂, 37°39'47.6172"N, 88°45'35.1864"E, H: 4007.46 m, 13.VII.2020 , • 2 ♀, 37°58'30.1512"N, 88°58'25.158"E, Altitude: 3849.56 m, 14.VII.2020 ; • 4 ♀ 2 ♂, 38°5'37.572"N, 89°16'17.1372"E, Altitude: 3471.91 m, 9–15.VII.2020, by Malaise trap ; • 6 ♂, 36°56'32.91"N, 90°16'40.4508"E, H: 4047.73 m, 16.VII.2020, by net sweeping .

Description.

Female. Length 1.4 mm, body metallic green (Fig. 9 A ), antenna dark brown except scape complete brown with metallic tints, anterior of eyes, toruli and part of frontal suture with some yellowish marks, eyes and ocellus red, mandibles yellow and maxillary palp white without expansion; legs yellowish-white, coxae with body color, basal 3 / 4 of femur dark brown with metallic tints, terminal tarsus brown. Gaster dark brown with metallic green tints.

Head with finely reticulate, in frontal view 1.05 × as wide as high (Fig. 9 B ), POL: OOL = 3.65. Frontal sulcus obtuse “ V ” shaped and yellow marked, malar sulcus straight, 0.4 × as eye height; clypeus truncate, without oral fossa. Antenna inserted below the level of lower margin of eyes, with two discoid anelli (Fig. 9 D ); scape 4.5 × as long as wide, 0.8 × as long as eye height; clava 2.4 × as long as wide and 1.4 × as long as F 1 + F 2, F 1 1.3 × as wide as the width of pedicel in lateral view; funiculars quadrate, each with a single row of sensilla and irregularly distributed.

Mesosoma, pronotum conoid (Fig. 9 C ), 0.2 × as long as wide, mesoscutum 0.8 × as long as wide, with complete and deep notauli; scutellum 1.0 × as long as wide and 1.0 × as long as mesoscutum, with lateral grooves; ratio distance between grooves / distance between one groove and lateral margin of scutellum 2.3, meshes of reticulation more elongate than mesoscutum; dorsellum 0.2 × as long as scutellum, propodeum 0.2 × as long as scutellum, smooth with fine reticulation, propodeal callus with four pale setae. Submarginal vein of forewing with six setae and without speculum (Fig. 9 E ), marginal vein: postmarginal vein: stigmal vein = 3: 1.7: 1.

Metasoma, gaster sessile, dark brown with metallic tints throughout, about 1.7–1.8 × as long as wide.

Male. Length 1.7 ± 0.1 mm (Fig. 9 F ), body slighter, antennal scape obviously enlarged (Fig. 9 G ).

Hosts.

Unknown. There are many Agromyzidae ( Diptera ) flies and Oxytropis , Carex plants (gravel desert) in their habits.

Etymology.

‘ altunensis ’ means the collection site.

Diagnosis.

The new species is similar to D. albimaxillia , but can be distinguished by the significantly enlarged white maxillary palp and gaster with a large spot in the anterior 1 / 2 of the latter. Among species of the genera, only this species has the scape and gaster dark brown with metallic green tints throughout.

Figures

Figures 9. A – G Diaulinopsis altunensis Kang & Hu, sp. nov., female holotype A habitus, lateral view B head, frontal view C mesoscutum D head, lateral view E forewing. Male F habitus, lateral view G head, lateral view. Scale bars: 250 μm (A, C, D-G); 100 μm (B).