Wallacemetopus anteriotenebrosus Taszakowski & Kim, 2025

Taszakowski, Artur, Kim, Junggon & Jindra, Zdeněk, 2025, Further records of the tribe Gigantometopini (Hemiptera, Heteroptera, Miridae, Isometopinae) with descriptions of three new genera and five new species, Zootaxa 5725 (4), pp. 451-474 : 468-470

Wallacemetopus anteriotenebrosus Taszakowski & Kim sp. nov.

Diagnosis

See the generic diagnosis.

Description. Coloration. Yellowish and brown. Head: vertex reddish; compound eyes silverish; frons and gena above fovea antennalis dark brown; gena below fovea antennalis, mandibular and maxillary plates and clypeus brown; scape pale brown, pedicel and flagellomeres yellowish; labium yellowish, apical part of fourth segment brownish. Thorax: anterior part of pronotum dark brown, posterior part pale brownish with ivory markings in posterior corners; exposed part of mesoscutum dark brown; scutellum laterally reddish brown, medial part and apex pale; thoracic pleura mostly brown; propleuron dark brown except yellowish posterior upper corner and dorsal margin, mesepisternum and mesepimeron dark brown, metepisternum brown; ostiolar peritreme pale yellowish, evaporative area yellowish brown; hemelytra generally yellowish, semitransparent, hypocostal lamina pale, except brown spot in anterior part; membrane pale; legs entirely pale yellowish. Abdomen: pale brown, tinged with red dorsally. Body oval, length 2.25. Surface and Vestiture. Body shiny, somewhat metallic, unevenly punctate, covered with pale, long setae; head deeply punctate, somewhat wrinkled, frons and vertex with tiny scattered setae, posterior margin with few long, reclining setae; antennae with erect setae; pronotal collar with row of setae; pronotum and mesoscutum distinctly and densely punctate, covered with setae; scutellum unevenly punctate, covered with scattered setae; thoracic pleura deeply punctate, and covered unevenly with scattered setae; hemelytra unevenly punctate, covered with setae; legs with short, pale-brown setae; abdomen covered with pale setae. Structure. Head: flattened, hypognathous, distinctly higher than width across eyes, dorsally equal to calli level; vertex flat, protruding above eye level; compound eyes 0.4x as high as head high; vertex wide, 0.37x as head width; ocelli large, touching compound eyes; fovea antennalis positioned at middle of the ventral margin of compound eye and apex of clypeus; scape short, as thick as pedicel in distal part; pedicel slightly arcuate; flagellomeres linear; basiflagellomere longer than distiflagellomere; proportion of scape to distiflagellomere 0.12: 0.48: 0.67: 0.23; labium reaching second abdominal segment. Thorax: pronotum trapeziform, midline length 0.55x as posterior width; pronotal collar relatively broad; calli well developed, separated by distinct fossa, disc convex, lateral margin carinate, posterior margin sinuate with a small backwards-pointing process in the middle; exposed part of mesoscutum long; scutellum large, 0.75x as long as pronotal length, with two projections; scent gland evaporative area triangular; ostiolar peritreme small, swollen, directed upward and anteriorly; hemelytron lateral margin slightly rounded; embolium broad, broader posteriorly; hypocostal lamina wide; cuneus broad, inner margin straight; membrane with two cells; protarsi three-segmented; metatarsi two-segmented; claws without subapical tooth. Abdomen: elongate, reaching the apex of cuneus. Genitalia: aedeagus delicate, endosoma sacciform and membranous, weakly sclerotized inside, outer subapical and apical part more sclerotic, clothed with dense spinules ( Fig. 9E ); left paramere scythe-shaped, sensory lobe narrow, slightly developed ( Fig. 9F ); right paramere with knee-shaped sensory lobe, apical process short, as thick as basal process, slightly curved at apex, apex sharp ( Fig. 9G ).

Measurements. Body. Length, clypeus-apex of membrane: 2.25; width 0.99. Head. Length: 0.24; width, including compound eyes: 0.52; vertex width: 0.19; eye dorsal width: 0.19; height in frontal view: 0.57. Antenna. Total length: 1.50; length of scape: 0.12, pedicel: 0.48, flagellomere I: 0.67, flagellomere II: 0,23. Labium. Total length: 1.09; length of segment I: 0.27; II: 0.27; III: 0.23; IV: 0.34. Pronotum. Mesal length: 0.48; posterior maximal width (straight): 0.88. Mesoscutum. Mesal length: 0.05. Scutellum. Anterior width: 0.38; mesal length: 0.36. Hemelytron. Length: 1.65; claval commissure length: 0.29; outer embolial margin length (straight): 1.05; outer cuneal margin length (straight): 0.29; cuneus width: 0.20. Metatarsus. Total length: 0.23; length of tarsomeres I:II: 0.08:0.20.

Etymology. From Latin anterior (“that is before, foremost”) and tenebrôsus (dark, gloomy) in reference to the dark front part of the body.

Type material. Holotype ( ♂): ’ INDONESIA: \ SULAWESI UTARA, \ Dumoga-Bone N.P.: \ July 1985. \\ Fog 15 \ 400m, 19.vii.85. \ BMNH Plot C \\ TRAY \ 93’ ( NHM).

Distribution. Indonesia, North Sulawesi, Bogani Nani Wartabone National Park (formerly known as Dumoga Bone National Park) ( Fig. 3R ).

Biology. Unknown.

Figures

FIGURE 3. Distribution of Gigantometopini (updated from Taszakowski et al. 2020). Yellow arrows and letters – described species, white arrows and numbers – unknown or undescribed Gigantometopini. Astroscopometopus gryllocephalus (Miyamoto, Yasunaga & Hayashi, 1996) (A); A. gryllocephalus and Kohnometopus fraxini Yasunaga, 2005 (B); Astroscopometopus formosanus (Lin, 2004) and Isometopidea lieweni Poppius, 1913 nec (C); Kohnometopus yangi (Lin, 2005) (D); A. formosanus (E); Gigantometopus coronobtectus Kim, Taszakowski & Jung, 2021 (F); I. lieweni (I); Astroscopometopus hesaraghattaensis Yeshwanth, Chérot & Henry, 2021 (G); Isometopidea viraktamathi Yeshwanth, Chérot & Henry, 2021 (H); Planicapitus brunneus sp. nov. (J); Gigantometopus rossi Schwartz & Schuh, 1990 (K); Malaymetopidea maculata gen. et sp. nov. (L); Kohnometopus yasunagai Taszakowski, Kim & Masłowski, 2022 (M); Gigantometopus schuhi Akingbohungbe, 2012 (N); Bruneimetopus simulans Taszakowski, Kim & Herczek, 2020 (N); Megalofaciatus gibbosus Taszakowski, Kim & Herczek, 2021 (N); Planicapitus luteus Taszakowski, Kim & Herczek, 2020 (N, P); Megalofaciatus foliotibialis Taszakowski, Kim & Herczek, 2021 (O); Sulawesimetopus henryi Herczek, Gorczyca & Taszakowski, 2018 (R); Utarametopus linuspitti sp. nov. (R); Utarametopus striatus sp. nov. (R); Wallacemetopus anteriotenebrosus gen. et sp. nov. (R). Kohnometopus sp. (1); Isometopidea sp. (2); Unknown Gigantometopini (3–5); Gigantometopus spp. (5).

FIGURE 9. Wallacemetopus anteriotenebrosus Taszakowski & Kim, gen. et sp. nov., holotype, male. Dorsal (A), lateral (B), antero-dorso-lateral (C) and anterior (D) view; aedeagus (E), left paramere, partially damaged (F), right paramere (G). ap = apical process; app = sclerotized appendage; bp = basal process; sl = sensory lobe; sp = spinules.