Taxonomy of Micronectidae (Heteroptera: Nepomorpha) from Vietnam, with descriptions of 11 new species Author Ha, Tuyet Ngan 568A022B-D36D-4147-8B0D-FB35B2A4D197 Faculty of Biology, VNU University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam. hatuyetngan95@gmail.com Author Tran, Anh Duc 3CB36F17-D917-4600-B888-C33B1C04259F Faculty of Biology, VNU University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam. tran.anhduc@hus.edu.vn text European Journal of Taxonomy 2021 2021-06-24 756 1 82 http://dx.doi.org/10.5852/ejt.2021.756.1407 journal article 5963 10.5852/ejt.2021.756.1407 73c0dde0-1a03-4fe2-8d13-05cd614ff3b1 2118-9773 5033010 4A60FB62-20D7-4DC9-A4EA-BCE633730111 Micronecta ( Indonectella ) grisea ( Fieber, 1844 ) Figs 5A , 6A–D Sigara grisea Fieber, 1844: 14 , table 1, fig. 21 ( type locality not specified). Micronecta thyesta Distant, 1910: 349–350 ( type locality: Madhupur, India ). Micronecta pilosella Matsumura, 1915: 115 , 119 ( type locality: Taiwan) . Micronecta grisea – Kirkaldy 1908: 209 (list). — Wróblewski 1968: 772–773 , 775 (synonymy, checklist); 1972a: 23–25, 50, tables 1–2, figs 36, 40 (additional notes, key). — Fernando & Cheng 1974: 37 . — Jansson 1995: 30–31 (catalogue). — Nieser & Chen 1999: 79–80 , table 2, fig. 44 (key, notes, distribution). — Nieser 2000: 286 , fig. 31 (key); 2002b: 265, 267, fig. 10 (key, notes). — Nieser et al. 2005: 190 (checklist). Micronecta pilosella – Chen 1960: 117 (synonymised with M. thyesta ). Micronecta thyesta – Hutchinson 1940: 363–365 , figs 64–75 (redescription, assigned to subgenus Indonectella ). — Wróblewski 1962: 177 (notes); 1967: 240 (notes); 1968: 772 (synonymised with M. grisea ). — Fernando 1964: 606 , fig. 11, 22, 33 (diagnosis). — Leong 1966: 84 , 88 (notes, key). Diagnosis Body length 3.0–3.1. Pronotum slightly longer than median head length; clearly narrower than head width. Hemelytron ( Fig. 5A ) translucent or greyish brown, usually with two broken longitudinal dark stripes; embolium with a large spot in the middle and two smaller spots on two sides. Males: fore femur with a pair of spines on proximal third; fore tibia with a spine on middle third ( Fig. 6A ); palar claw, median lobe of sternite VII and free lobe ( Fig. 6B ) as in diagnosis for subgenus. Left paramere: shaft slender, evenly arched; distal part with small barbs; apex recurved, flattened, thus appearing flag-like; basal lobe short and broad ( Fig. 6D ). Right paramere: shaft distally curved, tapering from distal half towards narrowly rounded apex ( Fig. 6C ). Material examined VIETNAM – Ninh Thuan Prov. • 3 ♂♂ ; Nui Chua N.P ., Da Vach Lake ; 27 Jun. 2004 ; N.V. Quang leg.; NC-01; ZRC . Distribution Vienam: Hanoi, Lao Cai, Ninh Binh (Cuc Phuong), Nghe An, Ha Tinh ( Wróblewski 1962 , 1967 ); first record for Ninh Thuan. Other countries: widespread from India , Sri Lanka to southern China , Taiwan , Peninsular Malaysia , and Indonesia ( Sumatra , Java ) ( Leong 1966 ; Fernando & Cheng 1974 ; Nieser & Chen 1999 ; Nieser et al. 2005 ). Remarks This species can easily be recognised by the relatively large body (length ca 3.0 mm), the absence of a strigil, the shape of the the free lobe, and the shape of the apical part of the left paramere ( Fig. 6B, D ).