Diognetus gotohi, Yasunaga & Schwartz & Chérot, 2023

Yasunaga, Tomohide, Schwartz, Michael D. & Chérot, Frédéric, 2023, Revision of the plant bug genus Diognetus, with descriptions of thirteen new species from the Oriental and Eastern Palearctic Regions (Hemiptera: Heteroptera: Miridae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 63 (1), pp. 1-55 : 18-19

Diognetus gotohi sp. nov.

( Figs 7J–K, 12A–C, 27L–O)

Type material. HOLOTYPE: J, MALAYSIA: PAHANG: Fraser’s Hill [= Bukit Fraser], 3.715, 101.735, at light, 6 Jan 1997, S. Gotoh ( ZRC) ( AMNH _ PBI 00380749 ).

Description. Male (holotype). Body elongate ovoid, moderate in size, 5.1 mm. COLORATION: General coloration reddish-brown ( Figs 7J− K). Antennae pale brown; apical 1/6 of segment II, whole segment III and segment IV (except for yellow base of III) brown. Labium shiny pale reddish-brown; apex of segment IV infuscate. Pronotum relatively shining, slightly darkened at humeri, with yellowish-brown posterior margin; collar yellowish brown; scutellum uniformly pale reddish-brown; pleura reddish-brown ( Fig. 7K); scent efferent system creamy yellow. Hemelytron almost uniformly pale reddish-brown; cuneus rather bright red; membrane pale grayish brown, with a pair of pale, semitransparent marks posterior to cuneus. Coxae and legs pale brown, partly tinged with red; each femur without apical darker rings; apical half of each metatarsomere III brown. Ventral surface of abdomen pale reddish-brown, slightly paler mesally. SURFACE AND VESTITURE: As in generic diagnosis; scutellum rather matte, weakly punctate; hemelytron almost impunctate. STRUCTURE: Eye relatively large; vertex narrower an eye in dorsal view.Antennal segment II more than twice as long as segment III. Labium reaching but not exceeding apex of metacoxa, longer than antennal segment II. Scutellum almost flat. Metathoracic scent efferent system as in Fig. 27M, rather rounded. Metatarsomere I obviously shorter than II or III ( Fig. 30N); parempodia relatively broad, about as long as claw ( Fig. 27N). MALE GENITALIA ( Figs 12A–C, 27O): Left paramere with developed basal protuberance of sensory lobe ( Figs 12A, 27O); hypophysis of right paramere short, blunt-tipped ( Fig. 12B); vesica with TP at apex of LS; RS thick, curved apically; phallotheca with narrow apical keel ( Fig. 12C).

Female. Unknown.

Measurements. See Table 1.

Differential diagnosis. Based on similar shape of the male genitalia, the present new species is most closely related to D. duwalorum sp. nov., from which D. gotohi sp. nov. can be distinguished by the following characters: Body larger; basic coloration pale reddish-brown ( Fig. 7J); antennal segment II longer, more than twice as long as segment III; labium not surpassing apex of metacoxa; pronotal disk not significantly darkened; ostiolar peritreme rather rounded ( Fig. 27M); mesofemur shorter than basal width of pronotum; metatarsomere I shorter than II or III ( Fig. 27N); basal protuberance of left paramere wider ( Figs 12A, 27O); hypophysis of right paramere shorter, blunt-tipped ( Fig. 12B); vesica with TP at apex of LS; and vesical RS thick, curved apically ( Fig. 12C).

Etymology. Named for the late Mr. Shin Gotoh who collected the holotype.

Biology. Unknown.

Distribution. Malaysia (Pahang).