Chelyolygus parsanus Yasunaga, 2024, new species

Chelyolygus parsanus, new species (Figs. 4 F−J, 5E−H, 21H–O, 22A–D) Type material. Holotype: male, NEPAL: Makawanpur Dist.: Chitwan National Park, Machan Resort [current Parsa Wildlife Reserve], 27°32′06″N, 84°44′17″E, 270 m, on flowers of Mallotus sp., T. Yasunaga, M. Takai & B. Shishido, 7–9 November 2005 (NMTU) (AMNH _ PBI 00378792). Paratypes: NEPAL: 2 males, 8 females, same data as for holotype (TYCN, ZRC). Diagnosis. Chelyolygus parsanus, new species, is most closely related to C. fuhoshoensis but can be distinguished by the characters mentioned in the above key and the following characters: Relatively smaller body with shorter antennomere II, labium and metafemur; paler maculae on scutellum and hemelytron; shorter hypophysis of left paramere (Figs. 5F, 22A); generally shorter vesical spicules (Figs. 5H, 22B); smaller sclerotised rings (Fig. 4J); and posterior wall with narrower dorsal structure and sparse spinules on anterior interramal sclerite (Fig. 22C, D). Description. Body generally stramineous brown, ovoid, moderate in size; dorsal surface shining, with brown to dark brown stripes and maculae as in Figs. 4F, G, 7D. Head shiny pale brown, with sparsely distributed, short, semi-erect setae; clypeus fuscous; vertex with basal transverse carina concaved mesad, about as thick as pronotal collar (Fig. 21J). Antenna pale brown; antennomere I with dark apex; apical ¼–⅓ of antennomere II darkened; antennomeres III and IV dark brown, except for pale base of antennomere III. Labium shiny pale brown, reaching but not exceeding middle of metacoxa; apical part of segment IV dark reddish brown. Pronotum shiny pale brown, with sparsely distributed, short, reclining setae and minute punctures (Fig. 21I, J); calli usually with a pair of dark spots; pleura pale brown; metathoracic scent efferent system creamy yellow, with small, triangular peritreme (Fig. 21L); scutellum polished, with brown mesal stripe and dark apex, finely and shallowly punctate, with uniformly distributed, short, semi-erect setae (Fig. 21I). Hemelytron shining, stramineous brown, with striped pattern as in Figs. 4F, G, 7D, with uniformly distributed, semi-erect or reclining setae (Fig. 21H); apex of cuneus narrowly brown; membrane pale smoky brown. All coxae and legs pale brown; metafemur apically with two brown rings; apex of each tarsomere III dark brown; pretarsal structures as in Fig. 21N; parempodia relatively short, narrow. Abdomen pale brown. Male genitalia (Figs. 5 E−H, 21O, 22A, B): Left paramere stout, L-shaped, with short hypophysis (Figs. 5F, 22A); right paramere with short, tapered hypophysis (Fig. 5G). Vesica with two apically tapered spicules (Fig. 5H, 22B, 1–2); lobal-sclerite (Fig. 5H, 3) relatively short. Female genitalia (Figs. 4I, J, 22C, D): sclerotised rings elongate ovoid, narrow (Fig. 4J); ovipositor (gonapophysis I) as in Fig. 4I; posterior wall with small, rounded dorsal structure and sparse spinules on anterior interramal sclerite (Fig. 22C, D). Measurements. See Table 1. Etymology. Named for the type locality, Parsa Nature Reserve in S. Nepal; adjective. Distribution. Nepal (Makawanpur District). Biology. This new species was found to co-occur with Euphorbialygus rufobrunneus, new species, on inflorescence of Mallotus sp. (Fig. 8H). However, no immature form was confirmed.