Campoplex adustantennalis, Han & Achterberg & Chen, 2021

Han, Yuan-Yuan, Achterberg, Kees Van & Chen, Xue-Xin, 2021, The genus Campoplex Gravenhorst, 1829 (Hymenoptera, Ichneumonidae, Campopleginae) from China, Zootaxa 5066 (1), pp. 1-121 : 14-16

Campoplex adustantennalis sp. nov.

Figs. 5–6

Material examined. Holotype: female, Gansu, Zhenyuanxian, VII.1981, Cao Wei, No 815326 ( ZJUH) . Paratype: 1 female, Heilongjiang, Jingpohu, 26.VII.1995, Lou Juxian, No 962390 .

Description. Female ( Fig. 5 ) holotype. Body length 6.6 mm, fore wing length 5.2 mm.

Head. Antenna with 35 flagellomeres; first flagellomere 1.3× longer than second flagellomere. Face ( Fig. 6D ) granulose-punctate to punctate. Clypeus ( Fig. 6D ) punctate, slightly convex, apical margin arched. Malar space granulose-punctate, 0.7× basal width of mandible. Mandible with a weak lamella, upper tooth equal to the length of lower tooth. Frons rugose-punctate, median carina absent. Vertex granulose-punctate. Interocellar distance ( Fig. 6E ) 1.7× ocello-ocular distance and 1.8× distance between median and lateral ocelli. Temple granulose, mat. Occipital carina evenly arched, reaching hypostomal carina slightly at mandible base.

Mesosoma. Pronotum granulose-punctate dorsally, subpolished, trans-striate below. Mesoscutum ( Fig. 6F ) granulose-punctate. Scutellum punctate and rugose posteriorly. Metanotum rugose-punctate. Mesopleuron ( Fig. 6B ) punctate, trans-striate below tegula, speculum smooth and shiny. Metapleuron ( Fig. 6B ) punctate, punctures smaller than that on mesopleuron. Propodeum ( Fig. 6C ) with area basalis trapezoid; area superomedia granulose, with sparse punctures; area petiolaris rugulose-punctate; area superomedia confluent with area petiolaris, not depressed; all carina developed; propodeal spiracle small and oval.

Wing. Fore wing ( Fig. 6A ) areolet present and with a short stalk emitting 2m-cu vein from its apical part. Marginal cell short, distal part of surrounding vein 1.9× longer than proximal one. Vein 1cu-a opposite M&RS. External angles of second discal cell acute (60°). Hind wing with nervellus inclivous, intercepted at lower 0.4 of its length.

Legs. Hind femur 4.0× longer than wide. Inner spur of hind tibia 0.5× as long as first tarsomere of hind tarsus. Tarsal claws pectinate.

Metasoma. Mat. First metasomal segment ( Fig. 6G ) round in cross-section of basal 0.3, dorso-lateral carina and lateral groove absent. First tergite 2.5× longer than width of postpetiole. Second tergite 0.6× as long as first tergite, 0.9× its apical width; thyridium round, its distance from basal margin of tergite equal to its diameter. Third tergite 0.7× as long as its apical width. Sixth and seventh tergites without emarginations medially. Ovipositor sheath approx. 1.1× longer than hind femur, ovipositor gradually upcurved.

Colour. Black. Mandible medially and palpi yellowish brown; antenna, scape and pedicel brown; tegula yellow; fore leg yellowish brown with coxa black and telotarsus brown; mid leg yellowish brown with coxa and telotarsus black, trochanter brown; hind leg with coxa and trochanter black, trochantellus basally, tibia subbasally and apically, tarsus except basal tarsomere 0.8 brown, remainder of hind leg yellowish brown; metasoma black except postpetiole apically, second tergite apically and third segment basal-laterally brown.

Variation. Antenna with 35–39 flagellomeres; hind wing with nervellus intercepted at lower 0.2–0.4; second and third metasomal tergites yellowish brown.

Distribution. China (Gansu, Heilongjiang).

Comparative diagnosis. This species is similar to C. monochroma sp. nov., but differs from the latter by having malar space 0.7× basal width of mandible, frons rugose-punctate, propodeal area petiolaris rugulose-punctate, first metasomal segment without dorso-lateral carina and lateral groove, ovipositor sheath approx. 1.1× longer than hind femur, hind tibia subbasally and apically brown, second metasomal tergite apically, and third metasomal tergite basal-laterally brown.

Etymology. Name derived from “adustus” (Latin for “brown”) and “antenna” (Latin for “antenna”), because of its antenna brown.

Figures

FIGURE 5. Campoplex adustantennalis sp. nov., female, habitus.

FIGURE 6. Campoplex adustantennalis sp. nov., female. A, fore wing; B, mesopleuron; C, propodeum; D, head, anterior view; E, head, dorsal view; F, mesoscutum; G, first metasomal segment.