Diognetus duwalorum, 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 : 15

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https://doi.org/ 10.37520/aemnp.2023.001

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Diognetus duwalorum

sp. nov.

Diognetus duwalorum sp. nov.

( Figs 2E View Fig , 7G–H View Fig , 8K–M View Fig , 27F–I View Fig )

Type material. HOLOTYPE: J, NEPAL: BAGMATI: Kathmandu, Gongabu-Samakhusi , 27.731066, 85.313088, UV lighting, 28 Jun 2005, T. Yasunaga ( AMNH _ PBI 00380747 ) ( NMTU). GoogleMaps

Description. Male (holotype). Body elongate ovoid, small-sized, 4.2–4.3 mm. COLORATION: Dorsum brown, tinged with red ( Figs 2E View Fig , 7G View Fig ). Antennae pale brown; extreme apex of segment II, whole segment III and segment IV (except for yellowish base of III) brown. Labium shiny pale reddish-brown; apical part of segment IV darker. Pronotum relatively shining, with posterior 1/3 darkened except for yellowish posterior margin; collar yellowish brown; scutellum uniformly pale brown; pleura reddish-brown ( Fig. 7H View Fig ); scent efferent system creamy yellow. Hemelytron almost uniformly reddish-brown; base of cuneus narrowly semitransparent; membrane pale grayish brown brown, with pale, semitransparent areolar cells and apical irregular maculae. Coxae and legs pale brown, partly tinged with red; metafemur with two brown rings subapically (basal one wider as in Fig. 2E View Fig ); apical 1/3 of metatarsomere III darkened. Ventral surface of abdomen pale brown, with reddish lateral margins and pygophore. SURFACE AND VESTITURE: As in generic diagnosis; dorsal vestiture relatively short; scutellum rather matte, weakly punctate. STRUCTURE: Eye moderate in size; vertex about as wide as an eye in dorsal view. Antennal segment I shorter than segment IV. Labium long, exceeding apex of metacoxa and reaching abdominal sternum VIII ( Fig. 27F View Fig ), longer than antennal segment II. Scutellum weakly swollen. Metathoracic scent efferent system as in Fig. 27G View Fig . Metatarsomere I as long as II, slightly shorter than III ( Fig. 27I View Fig ); parempodia shorter than claw ( Fig. 27D View Fig ). MALE GENITALIA ( Figs 8K–M View Fig , 27H View Fig ): Left paramere with slightly rounded sensory lobe and rather broad hypophysis ( Figs 8K View Fig , 27H View Fig ). Vesica with long RS and short MS; LS spinulate mesially, lacking TP ( Fig. 8M View Fig ).

Female. Unknown.

Measurements. See Table 1.

Differential diagnosis. Recognized by its small size; almost uniformly brownish general coloration without mottled pattern; and long labium reaching abdominal sternum VIII.

Etymology. Named for Dr. Ram Keshari Duwal and her family, who kindly supported research activity of the first author in Nepal (2005–2007).

Biology. Unknown; an available male specimen was collected by UV lighting at residential zone in Kathmandu.

Distribution. Nepal (Kathmandu).


Departamento de Biologia de la Universidad del Valle


Tavera, Department of Geology and Geophysics


American Museum of Natural History













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