Chelyolygus tabananicus, Yasunaga, 2024

Yasunaga, Tomohide, 2024, New genera and species of the ‘ Lygus-complex’ ranging from the Himalaya-Oriental to the Wallacea region (Insecta: Heteroptera: Miridae: Mirinae), Raffles Bulletin of Zoology 72, pp. 371-423 : 382

Chelyolygus tabananicus , new species

( Figs. 1A, B , 2 F−H, 20G–O)

Type material. Holotype: female, INDONESIA: Bali, Tabanan, Bedugul Area , 8°16′S, 115°09′E, local collector, 8–12 August 1996 ( ZRC) ( AMNH _ PBI 00378778 ).

Diagnosis. This new species is currently known only by a single female specimen and recognised readily by the following characters: Pale ivory brown general colouration; relatively large size; weak basal transverse carina on vertex; darkened apex of clypeus, annulated antennomere I; dark, short, interrupted stripes along veins on hemelytra; and semi-circular dorsal structure and narrow, less-spinulate, subtriangular interramal lobe on posterior wall.

Description. Holotype female: Body generally pale ivory brown ( Fig. 1A, B ); dorsal surface shining, impunctate, with sparsely distributed, pale, short, reclining setae. Head shiny creamy brown; basal carina on vertex reduced, flat; apex of clypeus and ventral half of buccula infuscate. Antenna dark brown, relatively short; antennomere I pale brown, with obscure basal half and darkened extreme apex; antennomere II pale basal half (except for dark base), shorter than basal width of pronotum; base of antennomere III pale. Labium pale reddish brown, reaching apex of metacoxa; apical ¼ of segment IV darkened. Pronotum polished, with a pair of small, circular spots on calli; collar about as thick as base of antennomere II; thoracic pleura milky brown; metathoracic scent efferent system as in Fig. 20I ; scutellum shining, tinged with red at apex. Hemelytra with rather uniformly distributed, short, reclining setae; clavus and corium with dark, short, fragmentary stripes; paracuneus with a dark, small spot; apex of cuneus fuscous; membrane pale greyish brown, semi-transparent, with brown veins. All coxae and legs pale brown; metafemur with two brown, apical rings that are obliterated posteriad; tibia with small dark spots at bases of spines; apical part of each tarsomere III dark brown; pretarsal structure as in Fig. 20K . Abdomen pale brown, speckled with reddish brown ventrally. Female genitalia (2F−H, 20L–O): Sclerotised rings ovoid, rather small, separated to each other mesally ( Figs. 2F , 20L ); Posterior wall with a row of spines on anterior part of interramal sclerite interrupted mesally ( Figs. 2G , 20M ); dorsal structure wide, semi-circular, with densely distributed spinules ( Fig. 20N, O ); interramal lobe small, subtriangular ( Figs. 2G , 20M ). Male: Unknown.

Measurements. See Table 1.

Etymology. Named for the type locality, Tabanan District of Bali Island; adjective.

Distribution. Indonesia (Bali Island).

Biology. Unknown.

Figures

Fig. 1. Habitus images of Chelyolygus species. A, B, Chelyolygus tabananicus, new species, holotype female in dorsal (A) and ventral (B) views; C, D, C. cheroti, new species, male; E, F, ditto, female; G, C. wolskiorum, new species, female in ventral view; H, ditto, holotype male in ventral view; I, C. bipuncticollis, male in dorsal view; J, ditto in right lateral view.

Fig. 2. Male (A–E) and female (F–H) genitalia of Chelyolygus bipuncticollis (A–E) and C. tabananicus, new species (F–H). A, B, Vesica; C, left paramere; D, E, right paramere; F, genital chamber with sclerotised rings and adjacent structures; G, posterior wall; H, apex of ovipositor (gonapophysis I). Scale bars 0.2 mm.

Fig. 20. Scanning electron micrographs of Chelyolygus bipuncticollis (male) and C. tabananicus, new species (holotype female). A, G, Head and anterior thorax, left lateral view; B, head, frontal view; C, ditto, dorsal view; D, E, K, pretarsal structure; F, metatarsus; H, head and pronotum, frontal-left lateral view; I, metathoracic scent efferent system; J, mesotarsus; L, genital chamber, dorsal view; M, N, posterior wall; O, ditto, dorsal structure.