Limois balteatus, Wang & Constant & Chen & Zheng & Qin, 2025

Limois balteatus sp. nov.

( Figures 1–3 View FIGURE 1 View FIGURE 2 View FIGURE 3 )

Diagnosis. (1) Cephalic process not reaching posterior margin of vertex ( Fig. 1D View FIGURE 1 ); (2) Frons medially with 3 longitudinal carinae, the middle one weakly marked ( Fig. 1E View FIGURE 1 ); (3) Tegmina with one black, broad irregular transverse band at basal 1/3, extending from costal margin to posterior margin ( Fig. 1A View FIGURE 1 ); (4) Hindwings red in basal half, the posterior margin black brown but lighter near the base ( Fig. 1A View FIGURE 1 ); (5) Gonostyli with apical margin roundly truncated in lateral view, tectiductus inconspicuous ( Fig. 2A, B View FIGURE 2 ).

Description. Measurement. Body length: ♀ 18.5 mm; ♂ 15.5–16.0 mm. Wingspan: ♀ 36.0 mm; ♂ 31.0– 31.5 mm.

Head. Including eyes, distinctly narrower than pronotum ( Fig. 1D View FIGURE 1 ). Vertex yellowish-brown, quadrangular, about 2.0 times as broad as an eye, posterior margin with 2 black brown spots, lateral and posterior margins carinate ( Fig. 1D View FIGURE 1 ). Cephalic process black, margins yellowish-brown, short and flattened; not reaching posterior margin of vertex ( Fig. 1D, F View FIGURE 1 ). Frons black brown, laterodorsal angles yellowish-brown, basal angles yellowish brown with orange; with 3 longitudinal carinae (median carina weak, not reaching fronto-clypeal suture); lateral margins carinate ( Fig. 1E View FIGURE 1 ). Clypeus black brown, disc protuberant, shorter than frons ( Fig. 1E View FIGURE 1 ). Labium black and elongate ( Fig. 1E View FIGURE 1 ). Eyes grey white or dark brown (in collection specimens), ocellus orange ( Fig. 1F View FIGURE 1 ). Antennae black brown ( Fig. 1F View FIGURE 1 ).

Thorax. Pronotum yellowish-brown, median carina distinct; on each side of median carina, one black broad band; below eye with one black brown spot near anterior margin ( Fig. 1D View FIGURE 1 ). Mesonotum yellowish-brown, with 3 longitudinal carinae; median carina straight, two lateral carinae curved and reaching posterior margin; on each side of mesonotum, 3 black large spots along anterior margin, one sub-triangular black patch near each lateral margin, and one irregular black large patch on both sides of disc along median carina, and two black spots subapically ( Fig. 1D View FIGURE 1 ).

Tegmina. Elongate, orange yellow in basal 1/3 and costal area, transparent in apical 1/2, with many irregular black spots; black irregular transverse band at basal 1/3, extending from costal margin to posterior margin ( Fig. 1A, B View FIGURE 1 ).

Hindwings. Shorter and broader, red in base half and transparent in apical 1/2, the posterior margin black brown but light near the base ( Fig. 1A, B View FIGURE 1 ).

Legs. Black, with yellow ring-shaped markings. Metatibiae with 5–7 lateral spines ( Fig. 1A–C View FIGURE 1 ).

Abdomen. Black, posterior margin yellow on each segment ( Fig. 1A View FIGURE 1 ).

Male terminalia. Pygofer ( Py) with ventral margin sinuate in profile, slightly concave submedially, posterior margin nearly straight ( Fig. 2A View FIGURE 2 ). Aedeagus ( Ae) with reduced membranous endosoma ( em), endosomal processes ( ep) sclerotized, apical 1/3 exposed, terminally inflated ( Fig. 2B, D, E View FIGURE 2 ). Gonostyli ( G) subtriangular in lateral view, apical margin truncated; in ventral view, plates connected at base ( Fig. 2B, F View FIGURE 2 ). Connective ( Cn) filiform ( Fig. 2B View FIGURE 2 ). Tectiductus ( Te) inconspicuous ( Fig. 2B View FIGURE 2 ). Anal tube ( An) elongated, basal half of ventral margin slightly concave, apical margin truncated, gradually widening from base towards apex in dorsal view ( Fig. 2A, C View FIGURE 2 ).

Female terminalia. Symmetrical in caudal view ( Fig. 3A View FIGURE 3 ). Anterior connective lamina ( Acl) of gonapophysis VIII ( Gx VIII) with one tooth at apex ( Fig. 3B View FIGURE 3 ). Gonapophysis IX sclerotized, fused basally but separated apically ( Fig. 3C View FIGURE 3 ). Gonoplac ( Gp) near oval in profile, with two slits ( Fig. 3D View FIGURE 3 ). Anal tube ( An) with apical margin concave, epiproct ( epi) short and wide, apex sharp, paraproct ( par) slender and conical, surpassing end of anal tube in dorsal view ( Fig. 3E View FIGURE 3 ).

Type material. Holotype: ♂ ( NWAFU), Huoditang , Shaanxi, China, 19 Aug. 2019, coll. Dao-zheng Qin.

Paratypes ( 3♂, 1♀): 1♂ ( NWAFU), same data as holotype ; 1♂ ( NWAFU), Huoditang , Shaanxi, China, 19 Aug. 2019, coll. Jigelbek Kananbuk ; 1♂ ( NWAFU), Huoditang , Shaanxi, China, 23 Aug. 2019, coll. Jun-ru Zhang ; 1♀ ( NWAFU), Huoditang , Shaanxi, China, 18 Aug. 2020, coll. Ming-jie Liu.

Etymology. The specific epithet “ balteatus ” is a Latin adjective meaning “furnished with a girdle or belt”. It alludes to the tegmina of this species with one black irregular transverse band at basal 1/3.

Distribution. China ( Shaanxi).

Remarks. The new species is similar to L. kikuchii , but differs from the latter in: 1) tegmina of the new species with one black irregular transverse band at basal 1/3, extending from the costal margin to the posterior margin ( Fig. 1A View FIGURE 1 ) (with one dark brown irregular transverse band at basal 2/5 on the tegmina, intermittent extending to the posterior margin.in L. kikuchii ); 2) The hindwing of the new species red in basal half ( Fig. 1A View FIGURE 1 ) (reddish yellow in basal 1/ 3 in L. kikuchii ).