Conostigmus bomensis Wang & Zhu, 2025

Wang, Xu, Li, Fang, Zhao, Wen-Jing, Huang, Yi-Xin, Xiang, Chun-Hui, Chen, Hua-Yan & Zhu, Chao-Dong, 2025, Five new species and three new country records of Megaspilidae from Xizang Autonomous Region, China (Hymenoptera, Ceraphronoidea), ZooKeys 1260, pp. 279-312 : 279-312

Conostigmus bomensis Wang & Zhu sp. nov.

Figs 3 , 4

Type material.

Holotype: • 1 ♂ ( AHNU), China: Xizang, Bomi, Linzhi , 20 Apr. 2021, D. Wu leg., XZ-15 . Paratype: • 1 ♂ ( AHNU), China: same collection information as preceding, XZYG-4 .

Diagnosis.

This new species can be separated from other Conostigmus species by the following characters: harpe of male genitalia strip-shaped in lateral view (distoventral and distodorsal margins of harpe with projections in lateral view), almost equal to gonostipe length in ventral view, gonossiculus with three spines apically. Proximal margin of S 9 without projections. Preoccipital furrow structured, groove, not reaching anterior ocellus; posteroventral area and part of mesopleuron smooth; pterostigma 2.3 × as long as wide; mesometapleural sulcus present, groove extending to mesopleural pit; sternaulus 0.45 × the length of mesopleuron.

Description.

Male. Body length: 1.65–1.74 mm.

Coloration (Fig. 3 A, B ). Head, mesosoma and metasoma black. Flagellum dark brown, scape and pedicel brown. Mouthparts brown; eyes silvery; ocelli silvery-black. Legs usually brown, sometimes darkened distally especially on middle sides of femora and tibiae. Pterostigma and stigmal vein pale brown. Body pubescence white; margin of wings brown.

Antennae (Fig. 3 C ). Scape ~ 4 × longer than wide, pedicel small and rounded. Scape 3.7–3.9 × as long as pedicel. Scape length vs F 1 length 1.2–1.4. F 1 length vs F 2 length 1.2–1.4. Longest flagellomere F 1. Shortest flagellomere F 8. Setae short, length not reaching 1 / 3 of flagellomere width.

Head (Fig. 3 D, E ). Head as wide as mesosoma. HH: HL = 1.3–1.5. HW: IOS = 1.5–1.7. HW: HH = 1–1.2. POL: OOL = 0.6–0.8. Ocellar triangle with short base, OOL: LOL = 2.0–2.3. Head circular in anterior view. Facial pit present and shallow, facial sulcus absent. Preocellar pit absent, ocellar fovea present. Preoccipital lunula present. Preoccipital furrow present, grooved, not reaching posterior ocellar. Preoccipital carina present. Upper margins of scrobes V-shaped, intertorular carina present. Head with sparse hairs.

Mesosoma (Fig. 3 B, D ). Mesosoma somewhat narrow, 1.3 × longer than wide (length / width / height = 660 / 520 / 430 µm); densely pubescent, alutaceous in sculpture; mesoscutum length / width = 260 / 520 µm, Ascw / Pscw = 370 / 400 µm; notauli and median mesoscutal sulcus very distinct, grooved. Scutellum width almost equal to length, length / width = 280 / 260 µm; scutoscutellar sulcus foveolate; single fovea of the scutoscutellar sulcus longer than width. Axilla width slightly longer than length. Pronotum triangular. Posteroventral area and part of mesopleuron smooth; mesometapleural sulcus present, grooved, extending to mesopleural pit, mesopleural pit expanded; ventral division of metapleuron smooth; pleural carina with long bristles. Sternaulus present, 0.45 × the length of mesopleuron; anteromedian projection of the metanoto-propodeo-metapecto-mesopectal complex present.

Wings (Fig. 3 F ). Forewing length 1.4 mm, with pterostigma, stigmal vein. Hyaline, densely pubescent, and marginal fringes numerous. Pterostigma (length / width = 210 / 90 µm) 2.3 × as long as wide, semi-elliptical, posterior margin convex. Stigmal vein 310 µm, slightly curved in the latter section and 1.5 × longer than pterostigma.

Metasoma (Fig. 3 A, G ). Metasoma 2 × longer than wide (length / width / height = 730 / 490 / 300 µm). Syntergum smooth, reaching 3 / 5 of metasomal length. Syntergum with three equal gastral carinae, reaching 3 / 20 of syntergum length. Syntergal translucent patch present, elliptical.

Male genitalia (Fig. 4 ). Genitalic cupula present, proximodorsal notch blunt, distodorsal margin straight. Cupula length <1 / 2 gonostyle-volsella complex length in lateral view. Proximoventral median projection of cupula present. Harpe strip-shaped in lateral view (distoventral and distodorsal margins of harpe with projections, in lateral view), with pointed tip; length almost equal to gonostipes length in ventral view. Proximal end of dorsomedian conjunctiva of the gonostyle-volsella complex straight. Gonostyle-volsella complex with medioventral ridge absent, gonostyle-volsella complex with length reaching 2 / 3 that of the gonostipes. Gonostipes longer than width; parossiculus separated from gonostipes. Parossiculus with one seta apically. Gonossiculus with three spines apically in lateral view. Penisvalva straight. S 9 blunt, with irregular row of seven pits; submedial projections on proximal margin of S 9 absent. Distal margin of male S 9 with projections. Proximolateral corner of male S 9 with projections, but not acute. Proximal margin of S 9 without projections. Medial projections on proximal margin of S 9 present, length <1 / 2 length of S 9 shield.

Female. Unknown.

Etymology.

The species is named after Bomi County, where the species was collected.

Distribution.

China ( Xizang).

Remarks.

This species is similar to C. jilongensis , but can be distinguished by the strip-shaped harpe with its length approximately equal to the gonostipes in lateral view (vs trapezoidal and ~ 3 / 5 the length of gonostipes in C. jilongensis ), the gonossiculus possessing three apical spines (vs two in C. jilongensis ), and the absence of a medioventral ridge on the gonostyle-volsella complex (present in C. jilongensis ).

Figures

Figure 3. Conostigmus bomensis Wang & Zhu, sp. nov., male, holotype. A. Dorsal habitus; B. Head and mesosoma, dorsal view; C. Lateral habitus; D. Head and mesosoma, lateral view; E. Head, anterior view; F. Wings; G. Metasoma, lateral view.

Figure 4. Conostigmus bomensis Wang & Zhu, sp. nov., male, holotype, genitalia. A. Dorsal view; B. Ventral view; C. Lateral view; D. S 9.