Taxonomic review for the Asian taxa of plant bug tribe Hallodapini, with emphasis on stridulatory mechanism (Hemiptera: Heteroptera: Miridae) Author Yasunaga, Tomohide Research Associate, Division of Invertebrate Zoology, American Museum of Natural History, New York, NY 10024, USA; Author Tamada, Yui Nagasaki West High School, Biology Club, Takenokubo 12 - Author Hinami, Haruka Nagasaki West High School, Biology Club, Takenokubo 12 - Author Miyazaki, Ayana Nagasaki West High School, Biology Club, Takenokubo 12 - Author Duwal, Ram Keshari Visiting Researcher, Agriculture & Agri-Food Canada Environmental Health, K. W. Neatby: Bldg # 20, 960 Carling Avenue, Central Experimental Farm, Ottawa Ontario, Canada K Author Nagashima, Tetsuya Nagasaki West High School, Biology Club, Takenokubo 12 - text Acta Entomologica Musei Nationalis Pragae 2019 Acta. Ent. Mus. Natl. Pragae 2019-02-26 59 1 71 99 http://dx.doi.org/10.2478/aemnp-2019-0007 journal article 5772 10.2478/aemnp-2019-0007 64a55ff4-0a71-491f-a4f4-9b2cd5a41431 1804-6487 4505468 027CE86F-9E75-44C3-A35E-E0C20BA4B693 Hallodapus susurratus Yasunaga & Duwal sp. nov. ( Figs 36–39 , 125–130 , 181–185 ) Type material. HOLOTYPE : ♁, THAILAND : CHIANG MAI: Chom Thong , 18˚25′N, 98˚40′E, 24–27 Apr 1991 , J. Horák ( NMPC ) ( AMNH _ PBI 00380644 ) . PARATYPES : THAILAND : CHIANG MAI: Same locality as for holotype , 23–27 Apr 1991 , S. Bílý ( NMPC ). Differential diagnosis. Recognized by its small size (< 2.5 mm ) comparable with H. centrimaculatus ; widely darkened dorsum; notched inner margin of anterior white macula on corium ( Fig. 36 ); rather granulate, rounded MFP ( Fig. 127 ); enlarged, stout left paramere ( Fig. 183 ); presence of distinct spine and dorsal knob on pygophore ( Figs 130 , 181 ); slender phallotheca ( Fig. 184 ); and rather sigmoid endosoma ( Fig. 185 ). This new species is most similar to or conspecific with a New Guinean species identified by SCHUH (1984) as H. ‘near’ pseudosimilis ( Schuh, 1974 ) originally described from South Africa ( SCHUH 1974 , Fig. 28 ); however, H. pseudosimilis is obviously larger in size (total length 3.2 mm and maximum width across hemelytra 1.04 mm ), and the color pattern (e.g. broadly pale corium and pale basal 1/3 of metafemur) significantly differs from that exhibited by H. susurratus (cf. SCHUH 1974 ). Description. Male ( holotype ). Macropterous; body generally coffee brown, small-sized (< 2.5 mm ), nearly parallelsided ( Fig. 36 ); dorsal surface matte, with sparsely distributed, woolly, reclining setae and dark, simple, erect setae. Head weakly shining. Antenna creamy white, partly tinged with red; segment I with pale brown basal half and reddish extreme apex. Labium reddish brown, long, exceeding apex of metacoxa, reaching apical margin of abdominal sternum VII; segment III and base of IV pale brown. Pronotum weakly shining, almost trapezoidal ( Fig. 125 ); pleura shiny dark reddish brown; scent efferent system yellowish brown, with ostiolar peritreme not produced ( Fig. 128 ). Hemelytron with two pairs of white maculae as in Fig. 36 (anterior pair of maculae larger, separated from each other and notched inward); FWS as in Fig. 126 ; membrane pale smoky brown, with slightly darkened veins. All coxae and trochanters yellowish brown, except for basal part of each coxa more or less obscure; all femora reddish or chocolate brown, with pale extreme apices; MFP rather granulate, with each plectrum rounded ( Fig. 127 ); tibiae creamy white; parempodia setiform, long ( Fig. 129 ). Abdomen wholly reddish dark brown, shining. Male genitalia ( Figs 180–185 ): Pygophore with a distinct pygophoral spine and a dorsal knob-like protuberance ( Figs 130 , 181 ); left paramere enlarged, stout ( Fig. 183 ); right paramere tiny ( Fig. 182 ); phallotheca slender ( Fig. 184 ); endosoma slender, sigmoid, tapered apically, without noticeable process or branch ( Fig. 185 ). Measurements. Male ( holotype , mm): Total length of body 2.32–2.45; head width including eyes 0.45–0.47; vertex width 0.18–0.19; lengths of antennal segments I– IV 0.24–0.25, 0.75–0.76, 0.54–0.57,?; total labial length 1.05–1.17; basal width of pronotum 0.69–0.74; maximum width across hemelytron 0.72–0.75; and lengths of metafemur, tibia and tarsus 0.90, 1.36–1.37,?. Female . Unknown. Etymology. From Latin, susurratus [= muttering, whispering], referring to the small size and rather granulate metafemoral plectrum of this new species; adjective. Biology. Unknown; two available specimens were collected at montane zone of northern Thailand . Distribution. Thailand (this paper).