Diognetus giganteus, Yasunaga & Schwartz & Chérot, 2023

Diognetus giganteus sp. nov.

( Figs 7I View Fig , 27J− K View Fig )

Type material. HOLOTYPE: ♀, MALAYSIA: PAHANG: Cameron Highlands , 4.488, 101.367, at UV light, 28 Jul 1986, S. Gotoh ( ZRC) ( AMNH _ PBI 00380748 ). GoogleMaps

Description. Female ( holotype). Body ovoid, largest among known congeners with total length 6.7 mm, maximum width 3.2 mm. COLORATION: Dorsum pale brown, partly tinged with red ( Fig. 7I View Fig ). Head reddish-brown. Antennae pale brown; segment I pale reddish-brown; apical 1/5 of segment II, whole segment III and segment IV (except for yellow extreme base of III) dark brown. Labium shiny pale reddish-brown (segments III− IV not observed as heavily glued). Pronotum irregularly speckled with dark maculae; mesoscutum and scutellum reddish-brown, with irregular symmetrical dark maculae and yellow apex; lateral margin of pronotum and dorsal half of propleuron shiny dark brown; mesepimeron and episternum infuscate; scent efferent system creamy yellow. Hemelytron pale reddish-brown, speckled with irregular dark maculae; cuneus pale brown, with sanguineous suffusion along inner margin; membrane pale grayish brown, semitransparent, with lighter veins. Coxae and legs reddish-brown; metafemur with two brown rings subapically (basal one wider); tarsi pale brown. Ventral surface of abdomen pale brown, with reddish or brownish lateral and posterior margins. SURFACE AND VESTITURE: As in generic diagnosis; dorsal vestiture relatively short; scutellum and hemelytron rather matte, weakly and sparsely punctate ( Fig. 27K View Fig ). STRUCTURE: Eye relatively large; vertex a little narrower than an eye in dorsal view. Antennal segment II slightly longer than pronotal width. Scutellum inflated, transversely rugose. Scent efferent system relatively large, with thick peritreme ( Fig. 27J View Fig ). FEMALE GENITALIA: Not examined, as a single available specimen is excessively glued.

Male. Unknown.

Measurements. See Table 1.

Differential diagnosis. Easily recognized by its largest size among known congeners; ovoid and tumid body; and relatively inflated pronotal disk and scutellum. These diagnostic characters enable to be distinguished from any other known species of Diognetus .

Etymology. Latin adjective giganteus (large, giant), referring to its largest size among the congeners.

Biology. Unknown.

Distribution. Malaysia ( Pahang).