Picacharops granulosus, Han & Achterberg & Chen, 2022

Han, Yuan-Yuan, Achterberg, Kees Van & Chen, Xue-Xin, 2022, The rare genera Picacharops Gauld and Sliochia Gauld (Hymenoptera, Ichneumonidae, Campopleginae) found in China, with description of two new species, Zootaxa 5133 (4), pp. 577-584 : 578-581

Picacharops granulosus sp. nov.

Figs 1–2

Material examined. Holotype: female, Shaanxi, Zuoshui Niubeiliang Natural Reserve, 16.VII.2013, Tan Jiangli, No 202019696 ( ZJUH).

Description. Holotype female ( Fig. 1 ). Body length 4.7 mm, fore wing length 3.7 mm.

Head. Antenna with 26 flagellomeres; first flagellomere 1.3× longer than second flagellomere. Face ( Fig. 2E ) granulose. Clypeus ( Fig. 2E ) granulose, weakly convex in lateral view, apical margin slightly arched, sharp. Malar space granulose, its length 0.3× basal width of mandible. Mandible with a strong lamella, upper tooth slightly longer than lower tooth. Frons granulose, median carina absent. Vertex granulose. Inner margin of eye slightly indented opposite antennal socket. Eyes convergent downward. Interocellar distance ( Fig. 2F ) 1.2× ocello-ocular distance and 2.2× distance between median and lateral ocelli. Temple granulose, not swollen behind eyes. Occipital carina evenly arched, reaching hypostomal carina at mandible base.

Mesosoma. Pronotum granulose dorsally, transversely striate ventrally. Mesoscutum ( Fig. 2G ), scutellum and metanotum granulose. Mesopleuron ( Fig. 2B ) granulose, weakly transversely striate below tegula. Metapleuron ( Fig. 2B ) granulose. Propodeum ( Fig. 2C ) with area basalis triangular; area superomedia confluent with area petiolaris, slightly concave, granulose; area externa and area dentipara granulose; lateral longitudinal carina absent; lateromedian longitudinal carina and anterior transverse carina distinctly developed; propodeal spiracle nearly round.

Wing. Fore wing ( Fig. 2A ) areolet present emitting vein 2m-cu from its apical half, with a moderate stalk. Marginal cell short, distal part of surrounding vein 2.4× longer than proximal one. Vein 1cu-a opposite M&RS, 1cu-a strongly oblique, angle with vein AA 55°. External angles of second discal cell acute (70°). Hind wing with CU&cu-a inclivous, not intercepted.

Legs. Hind femur 4.3× longer than wide. First tarsal segment without ventral row of setae medially. Tarsal claws short, weakly pectinate basally.

Metasoma. First metasomal segment ( Fig. 2D ) without glymma. First tergite 2.6× longer than width of postpetiole. Postpetiole granulose. Second tergite 0.6× as long as first tergite, slightly shorter than its apical width; thyridium circular, its distance from basal margin of tergite 0.8× its diameter. Metasoma from second tergite largely granulose and mat. Third tergite 0.6× longer than its apical width. Sixth and seventh tergites without medial emargination. Ovipositor ( Fig. 2H ) short and straight, with a distinct dorsal subapical notch, not projecting beyond apex of metasoma.

Colour. Black. Mandible except teeth, scape and pedicel, palpi, tegula, fore and mid legs, hind trochanter, trochantellus, medially of tibia, yellowish brown; hind coxa and femur, blackish-brown; hind tibia basally and apically, infuscated; metasoma blackish brown with apical 0.3 of second segment yellowish brown.

Distribution. China (Guizhou).

Notes. The distribution of the two known species of Picacharops is widely disjunct, China and Australia, so until further specimens are able to be examined, we have placed this new species in this Picacharop because the new species matches the generic characters well. This new species, however, differs distinctly from the only other known species of this genus, P. brevithorax , as shown in the key above.

Etymology. Name derived from “granosus” (Latin for “granular”), because its body sculpture is largely granulose.

Figures

FIGURE 1. Picacharops granulosus sp. nov., holotype, female, habitus.

FIGURE 2. Picacharops granulosus sp. nov., holotype, female. A fore wing B mesosoma, lateral view C propodeum D first metasomal segment, lateral view E head, anterior view F head, dorsal view G mesoscutum, dorsal view H ovipositor and its sheath.