Sinophorus latistrigis, Han & Achterberg & Chen, 2021

Han, Yuan-Yuan, Achterberg, Kees Van & Chen, Xue-Xin, 2021, Five new species of the genus Sinophorus Förster (Hymenoptera, Ichneumonidae Campopleginae) from China, Zootaxa 5061 (1), pp. 115-133 : 120-123

Sinophorus latistrigis sp. nov.

Figures 3 , 4

Material examined. Holotype: CHINA • ♀; Neimenggu, Baotou Wudangzhao ; 21.VIII.2000; Xue-Xin Chen leg.; No. 200100773 . Paratype: CHINA • 1♀; Neimenggu, Baotou Wudangzhao ; 21.VIII.2000; Yun-Ma leg.; No. 200100558 .

Description. Body length 8.0 mm, fore wing length 6.0 mm.

Head. Antenna with 35 flagellomeres; first flagellomere ca 1.3× length of second flagellomere. Face punctate, interspaces of punctures equal to diameter of punctures. Clypeus punctate, interspaces of punctures equal to diameter of punctures dorsally and ca 1.5× diameter ventrally, slightly convex, apical margin slightly curved. Malar space weakly granulose, ca 0.5× basal width of mandible. Upper tooth of mandible slightly longer than lower tooth, with a very weak lamella. Frons granulose-rugulose, shiny and smooth ventrally, median carina developed. Vertex granulose. Interocellar distance 1.8× ocello-ocular distance and 2.0× distance between median and lateral ocelli. Temple mat, ca 0.6× as long as eyes in lateral view. Occipital carina evenly arched, reaching hypostomal carina above mandible base.

Mesosoma. Pronotum rugulose-punctate dorsally, transversely striate laterally. Mesoscutum granulose-punctate. Scutellum punctate, rugose posteriorly. Metanotum rugose-punctate. Mesopleuron punctate, transversely striate below tegula, speculum smooth and shiny, rugose above episternal scrobe, lower half of mesopleuron with punctures separated by distance 1.0–1.5× their diameter. Metapleuron punctate, interspaces of punctures equal to diameter of punctures or slightly larger. Propodeum with area basalis rectangular; anterior transverse carina close to base; area superomedia combined with area petiolaris; area superomedia smooth and shiny, ca 0.8× as long as width of area petiolaris; area petiolaris transversely rugose; area externa granulose with sparse punctures; area dentipara rugulose; area lateralis nearly smooth with shallow punctures; costula developed; lateromedian longitudinal carina developed; lateral longitudinal carina weakly developed; propodeal spiracle oval, connected with pleural carina by a distinct carina.

Wing. Fore wing areolet present and with a short stalk emitting 2m-cu vein slightly behind middle. Marginal cell short, RS vein ca 1.8× longer than 2r&RS vein. Vein 1cu-a opposite of M&RS. External angles of second discal cell acute (70°). Hind wing with CU&cu-a reclivous, 2-Cu not connected to CU&cu-a, Cu&cu-a not intercepted.

Legs. Hind femur 4.4× longer than wide. Inner spur of hind tibia ca 0.5× as long as first tarsomere of hind tarsus. Tarsal claws strongly pectinate, hind tarsal claw with 2 slanting teeth basally, ca 1.6× longer than arolium.

Metasoma. Surface somewhat coriaceous. First metasomal segment with dorso-lateral carina and lateral groove, suture separating first metasomal tergite from sternite ca 0.2 below mid height of petiole. First metasomal segment ca 2.2× length of width of postpetiole; petiole ca 1.6× longer than postpetiole. Second tergite ca 0.7× as long as first tergite, 1.4× longer than its apical width; thyridium oval, its distance from basal margin of tergite ca 0.5× its length. Third tergite as long as its apical width. Ovipositor sheath ca 1.7× longer than hind femur, ca 2.1× longer than first metasomal segment, and ca as long as hind tibia. Ovipositor slightly upcurved, with depth at mid-length equal to width of hind first tarsomere, tip of upper valve of ovipositor ca 1.5× longer than hind telotarsus.

Colour. Black. Mandible medially and palpi, yellowish brown; tegula yellow; scape and pedicel blackish brown; fore leg yellowish brown except coxa and telotarsus brown; mid leg yellowish brown except coxa and each tarsomere apically brown; hind coxa black, trochanter and trochantellus brown, hind femur yellowish brown except apically infuscated, hind tibia whitish yellow basally and medially, first tarsomere 0.5, second tarsomere 0.2, third tarsomere 0.1 whitish yellow, remainder of hind leg brown; metasoma entirely black.

Variation. Metanotum granulose-mat to rugose-punctate; propodeal area dentipara rugulose to rugulose-punctate; fore wing vein 1cu-a opposite of to slightly distad of M&RS.

Comparison. This species runs in the key by Sanborne (1984) to S. exartemae (Uchida, 1928) , but differs from the latter by having propodeal lateral longitudinal carina weakly developed, propodeal area superomedia rugulose, hind tarsal claw with 2 slanting teeth, ovipositor slightly upcurved. S. exartemae : propodeal lateral longitudinal carina moderately to strongly developed, propodeal area superomedia distinctly rugose and often with several distinct punctures, hind tarsal claw with 5–6 strong perpendicular teeth, ovipositor strongly upcurved.

Etymology. Name derived from “latus” (Latin for “wide”) and “strigis” (Latin for “furrow, channel, groove”), because the median area of the propodeum is widely excavated.

Figures

FIGURE 3. Sinophorus latistrigis sp. nov., female, habitus, lateral aspect.

FIGURE 4. Sinophorus latistrigis 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 ovipositor, lateral view.