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 ( Dichaetonecta ) decorata Lundblad, 1933 Figs 1E , 3A–C Micronecta decorata Lundblad, 1933b: 93–94 , fig. 29, pl. XIX fig. 3 ( type locality: Sumatra , Indonesia ). Micronecta decorata – Wróblewski 1968: 775 (checklist). — Fernando & Cheng 1974: 39 . — Nieser 2000: 287 (key); 2002b: 266, fig. 13 (diagnosis, distribution). — Chen et al. 2015: 35–37 , figs 14, 24, 30–31, 43, 51, 58, 66, 74–75, 90 (redescription). Diagnosis Body length 1.2–2.4. Pronotum distinctly longer than median head length. Hemelytron ( Fig. 1E ) generally yellowish brown, with four indistinct, broken longitudinal brownish stripes; embolium yellowish with three brown spots. Males: fore femur with a pair of spines in proximal third, one spine on distal third dorsally; fore tibia with a pair of spines on distal margin; palar claw knife-shaped. Median lobe of sternite VII with a pointed apex and one long seta (see Chen et al . 2015 : fig. 58). Free lobe large, apically broadened, posterior margin produced into an obtuse angle, lateral angle with 10–15 long setae ( Fig. 3A ). Left paramere: shaft slender, constricted pre-apically, apex slightly twisted ( Fig. 3C ). Right paramere: shaft evenly curved, from distal fourth tapering towards narrowly rounded apex ( Fig. 3B ). Material examined VIETNAM – Lao Cai Prov. • 1 ♂ ; Sa Pa , Sin Chai , Muong Hoa stream (Cat stream); 27 Oct. 2013 ; A.D. Tran. et al. leg.; TAD1365 ; ZVNU • 1 ♂ , 1 ♀ ; Sa Pa , Cat Cat , Muong Hoa stream (Cat stream); 27 Oct. 2013 ; Q.H. Ngo et al. leg.; TAD1367 ; ZVNU . – Hanoi • 1 ♂ , 1 ♀ ; Ba Vi N.P., Ba Trai , Ri stream; 67 m a.s.l. ; 27 Apr. 2012 ; Q.H. Ngo leg.; TAD1209 ; ZVNU . – Lam Dong Prov. • 2 ♂♂ , 2 ♀♀ ; Da Lat , Datanla waterfall ; 22 May 2003 ; A.D. Tran leg.; TAD0333a ; ZRC . – Kien Giang Prov. • 2 ♂♂ , 2 ♀♀ ; Phu Quoc Island , downstream of Da Ban stream ; 1 Dec. 2010 ; A.D. Tran leg.; TAD1026 ; ZVNU . Distribution First records for Vietnam . Other countries: mainly in Southeast Asia, from Thailand and Peninsular Malaysia to Indonesia ( Sumatra , Java ) and Borneo (Sabah) ( Lundblad 1933b ; Chen et al. 2015 ). Remarks See Remarks under M. sahlbergi .