Agriotypus maae, Tang & He & Chen, 2022

Tang, Pu, He, Jun-hua & Chen, Xue-xin, 2022, Five new species of Agriotypus Curtis, 1832 (Hymenoptera, Ichneumonidae, Agriotypinae) from China, Journal of Hymenoptera Research 90, pp. 1-22 : 1

Agriotypus maae sp. nov.

Figs 3A , 4

Material examined.

Holotype. ♀, China, Shaanxi prov., Qinling, Tiantaishan , 34.2°N, 106.8°E, 2000 m, 1998.VI.8, Du Yuzhou, No. 983376 (ZJUH) . Paratypes: 1♀, China, Shaanxi prov., Zhouzhi Houzhenzi , 1990.V.24, Du Yuzhou, No. 984474 (TARI) ; 1♀, China, Shaanxi prov., Zhouzhi Houzhenzi , 1990.V.24, Du Yuzhou, No. 984475 (ZJUH) ; 1♀, China, Shaanxi prov., Foping Longcaoping , 33.5°N, 107.9°E, 1998.VI.4, Ma Yun, No. 981986 (ZJUH) .

Diagnosis.

This new species belongs to the Agriotypus himalensis species group, and it runs to A. maculiceps Chao in Bennett’s key (2001), but differs in frons with longitudinal carina (the latter without); pronotum finely punctate-rugose (the latter reticulate-rugose); scutellum entirely black (the latter pale in apical half), spine of scutellum produced more or less 85° dorsoposteriorly (the latter 35-45°). It differentiated from other new species proposed in this study by the combination characters: ♀ vertex near eyes and mesoscutum medio-posteriorly with large reddish brown patch; frons with a longitudinal carina; mesoscutum mostly glabrous; spine of scutellum produced 85° dorsoposteriorly.

Description.

Female. Body length 7.4 mm; fore wing length 5.8 mm.

Head. Head width 0.8 × its median length. Antennae 23-segmented, 0.5 × length of forewing. Temple behind eyes distinct narrowed in dorsal view. Transverse diameter of eye 1.0 × temple in dorsal view. Frons convex medially, with longitudinal carina. Antennal scrobe more or less shallow. Ocelli in triangle with base equal to its sides. POL: OD: OOL = 12: 11: 24. Face convex medially with coarse rugosity and dense pubescence. The area between antennal socket with a glabrous circular tubercle. Clypeus nearly pentagonal, almost equal to its maximum width, roundly convex, flat and rugose with punctuation in basal 0.6; thin in apical 0.4, without distinct rugosity, bluntly rounded on apical margin; summit of covexity of clypeus smoothly rounded in lateral view. Distance between tentorial pits 1.3 × length between a dorsal tentorial pit and eye. Malar space 1.15 × basal width of mandible. Occipital carina fine, but complete.

Mesosoma. Pronotum with fine epomia, dorsally curved angulate posteriorly; lateral of pronotum glabrous, reticulate in dorsal half, dense pubescent in ventral half. Mesoscutum mostly glabrous, shiny, with fine punctulation and rugosity partly; median lobe medially and lateral lobe mostly smooth; notaulus narrow, more or less crenulated, meeting in apical 0.3. Scutellum long triangle-shaped, 2.5 × its basal width, 1.2 × length of propodeum; basal half of scutellum with lateral carinae and reticulation-rugosity, convex medially, lateral margin of scutellum paralleled in basal 2/3, tapering towards to apex, spine-like apical half, smooth; in lateral view scutellum roundly curved medially, spine-like in apical 0.4, distinctly up curved, apex tapered, produced 85° dorsoposteriorly; ecepicnemial carina strong, extending to ventral-anterior of mesopleuron; mesopleural sulcus complete; sternaulus strong. Propodeum punctate-reticulate; lateral longitudinal carinae straight and strong and paralleled with lateromedian longitudinal carinae.

Wings. Fore wing with vein 1cu-a distad of M&RS, abscissa of vein M between 2rs-m and 2m-cu 0.8 × 2rs-m; hind wing with vein CU & cu-a interrupted by distal abscissa of CU at lower 0.15.

Metasoma. T1 3.5 × its apical width, 1.5 × length of propodeum; T1 finely reticulate-punctate, spiracles situated in basal 0.3, lateral margin of petiole behind spiracles parallel; lateromedian carinae and dorsolateral carinae complete and strong, reaching to apex. T2 convex on basomedian area, with a pair of short carinae medially and a lateral carina before spiracle. T2 and following tergite densely punctulate. Ovipositor sheath 2.2 × length of hind basitarsus.

Colour. Black, vertex near eyes and mesoscutum medio-posteriorly with large reddish brown patch. Hypopygium yellowish brown apically. Leg black. Fore wing with three dark brown longitudinal bands: basal band on basal 0.1-0.5 of forewing, but with a wide hyaline fascia occupying middle of cell R; substigmal band below stigma and distal band in distal of forewing; hind wing nearly hyaline.

Variation. Body length 7.0-7.4 mm; fore wing length 5.6-5.8 mm. Antennae 25-segmented. Transverse diameter of eye 0.9 × temple in dorsal view. Scutellum 2.0 × its basal width, 1.4 × length of propodeum. T1 4.1 × its apical width, 2.2 × length of propodeum.

Male. Unknown.

Host.

Unknown.

Distribution.

China (Shaanxi).

Etymology.

This species is named in honour of Mrs Ma Yun, who collected many materials of Agriotypus and provided a lot of help in our research work.

Figures

Figure 3. habitus, lateral aspect A Agriotypus maae Tang, He & Chen, sp. nov. B Agriotypus morsei Tang, He & Chen, sp. nov. Scale bar: 0.5 mm.

Figure 4. Agriotypus maae Tang, He & Chen, sp. nov. A antennae and wings B mesosoma, lateral aspect C mesosoma, dorsal aspect D lateral of pronotum E T 1, dorsal aspect F head, front aspect G head, dorsal aspect H propodeum, dorsal aspect I metasoma (except T 1), dorsal aspect J ovipositor sheath, lateral aspect.