Sundacapsus flavonitidus, Yasunaga & Chérot & Schwartz, 2021

Yasunaga, Tomohide, Chérot, Frédéric & Schwartz, Michael D., 2021, New genera and species of the Oriental mirine plant bugs from Southeast Asia, with six new combinations (Insecta: Heteroptera: Miridae: Mirinae: Mirini), Raffles Bulletin of Zoology 69, pp. 137-155 : 148-150

Sundacapsus flavonitidus , new species

( Figs. 4 A−C, 5A−I, 6, 8D–I, 9C, D, 12)

Type material. Holotype: male, INDONESIA: North Sumatra, Prapat (1,000 m), 50 km E of Pematang Siantar, 2.88°N, 99.52°E, UV light trap, T. Yasunaga , 29 November 1989 ( AMNH _ PBI 00380629 ) ( AMNH) . Paratypes: INDONESIA: North Sumatra : 1 male, same data as for holotype ( CNC) ; 3 males, same data ( TYCN) ; 2 males, 10 females, Brastagi, North of Toba Lake , 3.18°N, 98.50°E, 1,400 m, UV light trap, T. Yasunaga, 5–9 December 1989 (1 male with USI label: 00380630) ( TYCN) ; 2 females, same data ( CNC) ; 2 females, same data ( ZRC) ; 1 male, 2 females, same locality, E. W. Diehl, 24 March 1974 ( AMNH) ; 1 female, same locality and collector, 23 November 1973 ( AMNH) ; 1 male, Simalungun, Dolok Merangir , 3.12°N, 99.12°E, light trap, E. W. Diehl, April–June 1970 ( AMNH) ; 1 female, same locality and collector, April 1970 ( AMNH) ; 2 males, 4 females, same locality and collector, without date ( AMNH) .

Diagnosis. Recognised by moderate size and yellowish brown, oily shiny, glabrous, impunctate dorsum, with darkened scutellum, clavus and cuneus (male only) ( Fig. 4A, B ), in addition to the male and female genitalic structures mentioned in the above generic description. The male antenna is generally longer and cuneus is darker than those of female.

Description. Male. COLOURATION: Body yellowish brown; dorsum more or less tinged with red ( Fig. 4A ). Antenna dark brown; extreme bases of segments III and IV pale. Labium yellowish brown; apical half of segment IV darkened. Pronotum somewhat shining, widely pale brown, narrowly darkened posteriorly, with yellowish white collar and posterior margin. Thoracic pleura chestnut brown, with yellowish brown ostiolar peritreme; mesoscutum and scutellum shiny dark brown. Hemelytron pale brown; clavus and cuneus usually chestnut brown; membrane pale smoky brown, semitransparent, with dark brown veins. All coxae and legs yellowish brown; metafemur with two reddish rings subapically. Abdomen shiny chocolate brown, except for median part of sternites II−VII and base of pygophore pale brown. Surface, vestiture, and structure as in generic description.

Female. Almost similar to male, but body larger and stouter ( Fig. 4B ). Antenna pale yellowish to reddish brown; apex of segment I and apical ¼ of II and apical ⅓ of III dark reddish brown. Labium shiny pale reddish brown. Mesoscutum and cuneus pale reddish brown. Ventral surface generally pale brown, not significantly darkened ( Fig. 4C ).

Male ( Figs. 6A–C , 8G–I ) and female ( Figs. 6D, E , 8D–F ) genitalia as mentioned in generic description.

Measurements. See Table 1.

Etymology. From Latin, flavus (yellow) + nitidus (shiny, polished), referring to the shiny yellowish basic colouration of this new species; an adjective.

Distribution. Indonesia (northwestern highlands of Sumatra) ( Fig. 12 ).

Biology. Unknown; all known specimens were collected at mercury or fluorescence lights.

Figures

Fig. 4. Habitus images of Sundacapsus flavonitidus (A–C) and S. kinabaluensis (D–E). A, D, male in dorsal view; B, E, female in dorsal view; C, female in ventral view.

Fig. 6. Male (A–C) and female (D–E) genitalia of Sundacapsus flavonitidus. A, right paramere; B, left paramere; C, endosoma; D, posterior wall; E, genital chamber. Scale bars = 0.2 mm.

Fig. 8. Scanning electron micrographs of female and male (G–I) genitalia. A–C, Malayamiridius nigrotenuis; D–I, Sundacapsus flavonitidus; J, Lygocorides rubricans Yasunaga from Ryukyus, Japan; K, Orientomiris flavicollaris Yasunaga from Ryukyus; L, O. yaeyamanus Yasunaga from Ryukyus; M, Philostephanus rubripes (Jakovlev) from Nagasaki, Japan; N, O, P. ulmi (Kerzhner) from Russian Primorsky. A, D, E, J, M, N, posterior wall; B, K, L, interramal lobe; C, F, ovipositor (gonapophysis) I; G, apex of pygophore, caudal view; H, left paramere; I, right paramere; O, genital chamber.

Fig. 12. Map showing distributions of four new mirine species.