Venturia yunnanensis, Han & Achterberg & Chen, 2021

Han, Yuan-Yuan, Achterberg, Kees van & Chen, Xue-Xin, 2021, New species and records of Venturia Schrottky (Hymenoptera, Ichneumonidae, Campopleginae) from China and Nepal, ZooKeys 1041, pp. 113-136 : 113

Venturia yunnanensis sp. nov. Figures 13 , 14

Materia examined.

Holotype: China • ♀; Yunnan, Xishuangbanna; 20.VI.2018; 21°44.75'N, 100°26.00'E; 1610 m; Malaise trap; No. 20180823.

Comparative diagnosis.

In the key by Gupta and Maheshwary (1977), this species keys out to V. tectonae (Perkins, 1936) from Myanmar, but differs from it by the following: interocellar distance 1.2 × ocello-ocular distance, second tergite 1.5 × third tergite, malar space weakly punctate, tegula yellowish brown, and differently coloured metasoma.

This species is also similar to V. anchisteus Wahl, 1987 from Mexico, but differs from it by the following: propodeal area external punctate, area dentipara rugose-reticulate, the height of areolet ca equal to the length of stalk, second metasomal tergite ca 1.7 × its apical width, and hind tibia except base and apex yellowish brown.

Description.

Female holotype (Fig. 13 ). Body length 13.0 mm, fore wing length 8.8 mm.

Head. Antenna a little shorter than fore wing, with 42 flagellomeres; first flagellomere ca 1.5 × longer than second flagellomere. Face (Fig. 14F ) densely rugose-punctate. Clypeus punctate, punctures sparser than on face. Malar space weakly punctate, 0.35 × basal width of mandible. Frons rugose-punctate, punctate on sides; with median carina. Vertex matte, shallowly punctate. Ocellar region punctate. Interocellar distance (Fig. 14G ) 1.5 × ocello-ocular distance and 2.4 × distance between median and lateral ocelli. Temple shallowly punctate, ca 0.4 × length of the eye. Occipital carina evenly arched, joining hypostomal carina at mandible base.

Mesosoma. Pronotum (Fig. 14I ) rugose-punctate dorsally, trans-striate laterally. Mesoscutum (Fig. 14H ) punctate, rugose in notaulic region. Scutellum punctate anteriorly, rugose-punctate posteriorly. Metanotum rugose-reticulate. Mesopleuron (Fig. 14C ) rugose-punctate above, punctate below, trans-striate below tegula. Metapleuron rugose-punctate above, rugose-reticulate below. Propodeum (Fig. 14D ) with area basalis trapezoid; area superomedia region small, rugose and confluent with area petiolaris; area petiolaris trans-striate; area external punctate; area dentipara rugose-reticulate; area lateralis rugose-punctate; lateromedian longitudinal carina relatively weak below anterior transverse carina, and narrow posteriorly; propodeal spiracle oval. Propodeum extending to 0.5 of hind coxa.

Wing. Fore wing (Fig. 14A ) with relatively small, petiolate areolet, height of areolet ca equal to the length of stalk, emitting 2m-cu vein from its apical part. RS ca 1.8 × longer than 2r&RS. 1cu-a opposite M&RS. External angles of second discal cell acute (75°). Hind wing (Fig. 14B ) with CU&cu-a intercepted at lower 0.35 × of its length. Distal abscissa of CU connected to CU&cu-a, spectral.

Legs. Coxae weakly punctate. Hind femur ca 5.3 × longer than wide. Inner spur ca 0.45 × first tarsomere of hind tarsus. Tarsal claws pectinate (Fig. 14K ).

Metasoma. Apical tergites from third on slightly compressed. First segment (Fig. 14E ) long and slender, ca 3.9 × longer than its apical width, without glymma; dorsolateral carina of first tergite missing; petiole ca 5.5 × longer than wide. Suture separating first tergite from sternite situated mid-height at basal third of first metasomal segment. Second tergite finely granulate, relatively long and slender, 0.7 × first tergite, 1.5 × third tergite, 1.7 × its apical width; thyridium oval, its distance from basal margin of tergite ca 2.5 × its length. Third tergite 1.15 × longer than its apical width. Posterior margins of sixth and seventh tergites medially concave. Ovipositor sheath ca 1.8 × longer than hind femur, ovipositor ca 2.6 × longer than hind femur. Ovipositor upcurved apically, dorsal preapical notch absent, tip acute (Fig. 14J ).

Colour. Mandible except teeth, palpi, tegula, scape and pedicel in front, fore and middle legs from the apices of coxae onward, yellowish brown, femora and tarsus darker. Hind leg with tarsus, base and apex of tibia, base of trochanter, blackish brown; remainder of the hind leg yellowish brown. First metasomal segment black with postpetiole reddish brown, second segment reddish brown with apically lighter, remainder of the tergites light reddish orange.

Distribution.

China (Yunnan).

Etymology.

Name derived from the name of type locality of species.

Figures

Figure 13. Venturia yunnanensis sp. nov., female, habitus, lateral view.

Figure 14. Venturia yunnanensis sp. nov., female A fore wing B hind wing C mesosoma, lateral view D propodeum, dorsal view E first metasomal segment, lateral view F head, anterior view G head, dorsal view H mesoscutum, dorsal view I pronotum, lateral view J tip of ovipositor, lateral view K hind tarsal claw.