Agriotypus morsei, 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 morsei sp. nov.

Figs 3B , 5

Material examined.

Holotype. ♂, China, Shaanxi prov., Qinling, Tiantaishan , 34.2°N, 106.8°E, 2000 m, 1998.VI.8, Ma Yun, No. 982948 (ZJUH).

Diagnosis.

This new species belongs to the Agriotypus himalensis species group, and it runs to A. tangi Chao in Bennett’s key (2001), but differs in body and spine of scutellum black (the latter brown to reddish brown); spine of scutellum produced more or less 80° dorsoposteriorly (the latter 20°); T1 5.5 × its apical width (the latter at least 7.0 ×); paramere in lateral view parallel dorso-ventrally, 3.0 × its apical width (the latter enlarged apically, 1.8 × its apical width); T2 finely punctulate (the latter striate-rugose). It differentiates from other new species ( A. dui sp. nov.) proposed in this study by the combination characters: ♂ scutellum tapering from base to tip (the latter more or less parallel in basal 0.25); spine of scutellum produced 80° dorsoposteriorly (the latter 50°); length of T1 4.8 × its apical width (the latter 6.5 ×); paramere 3.0 × its apical width (the latter 1.2 ×).

Description.

Male. Body length 5.6 mm; fore wing length 5.2 mm.

Head. Head width 0.83 × its median length. Antennae 35-segmented, 1.2 × length of forewing. Temple behind eyes distinct narrowed in dorsal view. Transverse diameter of eye 1.2 × temple in dorsal view. Frons slightly convex medially, without longitudinal carina. Antennal scrobe more or less shallow, deeper near antennal socket, without a carina on its lateral margin parallel to inner orbit of eye. Ocelli in triangle with base equal to its sides. POL: OD: OOL = 12: 13: 20. Face convex medially with coarse rugosity and dense pubescence. Area between antennal socket with a glabrous short longitudinal tubercle. Clypeus nearly pentagonal, 0.75 × 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 dorsal tentorial pits 1.8 × length between a tentorial pit and eye. Malar space 1.8 × basal width of mandible. Occipital carina fine, but complete.

Mesosoma. Pronotum with strong epomia, dorsally curved angulate posteriorly. Mesoscutum densely punctulate; notaulus narrow, meeting in apical 0.1. Scutellum long triangle-shaped, 2.0 × its basal width, 1.1 × length of propodeum; basal half of scutellum with lateral carinae and punctuation-rugosity, convex medially, tapering towards to apex, spine-like apical half, smooth; in lateral view scutellum roundly curved medially, distinctly up curved, apex tapered, produced 80° dorsoposteriorly. Prepectal carina strong, extending to ventral-anterior of mesopleuron; mesopleural sulcus shallow, indistinct posteriorly, finely longitudinally rugose dorsally, mostly sparsely punctate posteriorly. Propodeum punctate-rugose; lateromedian longitudinal carinae distinctly convergent posteriorly; lateral longitudinal carinae more or less straight, complete 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 2cu-m 0.8 × 2rs-m; hind wing with vein CU & cu-a intercepted by distal abscissa of CU interrupted at lower 0.3.

Metasoma. T1 5.5 × its apical width, 1.8 × length of propodeum; T1 punctulate-reticulate, spiracles situated in basal 0.3, lateral margin of T1 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 fine and sparse punctulate, nearly smooth. Paramere in lateral view parallel dorso-ventrally, 3.0 × its apical width, apically roundly truncate.

Colour. Black. apical of metasomal tergite and paramere reddish brown. Fore wing with two faint fuscous longitudinal bands: substigmal band below stigma and distal band in distal 0.25 of forewing; hind wing only apical margin slightly infuscate.

Female. Unknown.

Host.

Unknown.

Distribution.

China (Shaanxi).

Etymology.

This species is named in honour of Prof. J.C. Morse of Clemson University, USA, who sponsored the survey on aquatic insect in Shaanxi Qinling natural reserve in 1998.

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 5. Agriotypus morsei 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 paramere, lateral aspect.