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 ( Unguinecta ) melanochroa Nieser, Chen & Yang, 2005 Figs 21D , 23A–D Micronecta melanochroa Nieser, Chen & Yang, 2005: 202–203 , figs 42–50 ( type locality: Yunnan , China ; assigned to subgenus Unguinecta ). Diagnosis Body length 2.3–2.4. Pronotum longer than median head length. Dorsum generally dark brown. Hemelytron greyish brown without darker brown patches; embolium yellowish or light brown, with a thin dark stripe near mesial margin ( Fig. 21D ). Males: pala with a secondary claw; primary palar claw sub-triangular, strongly widened distally ( Fig. 23A ). Median lobe of sternite VII narrow and long, with a narrowly rounded apex. Free lobe with mesial angle rounded, posterior margin nearly straight, lateral angle well-produced, ca 20 long setae on lateral side of free lobe ( Fig. 23B ). Left paramere: shaft styliform, tapering towards narrowly rounded apex, apical part slightly twisted; basal lobe relatively short and broadly rounded ( Fig. 23D ). Right paramere: shaft with mesial side nearly straight proximally, lateral side evenly curved, slightly thickened in the middle, then tapering towards blunt apex ( Fig. 23C ). Material examined VIETNAM – Phu Tho Prov. • 1 ♂ ; Xuan Son N.P. , Ban Coi , Coi stream, site 1, water from underground ; 7 Jun. 2013 ; A.D. Tran et al. leg.; TAD1337 ; ZVNU • 1 ♂ ; Xuan Son N.P. , Kim Thuong , Xoan stream; 28 Aug. 2013 ; A.D. Tran et al. leg.; TAD1343 ; ZVNU • 14 ♂♂ , 19 ♀♀ ; Xuan Son N.P. , Dong Son , Than stream, site 1; 29 Aug. 2013 ; A.D. Tran et al. leg.; TAD1346 ; ZVNU • 6 ♂♂ , 3 ♀♀ ; Xoan stream, near its confluence with Ha Bang stream ; 21°05.303′ N , 104°57.559′ E ; 27 Aug. 2014 ; T.S. Nguyen leg.; TS1407 ; ZVNU • 1 ♂ , 1 ♀ ; Lap stream, the first concrete bridge from Ngoc waterfall ; 21°08.398′ N , 104°56.303′ E ; 28 Aug. 2014 ; T.S. Nguyen leg.; TS1412 ; ZVNU • 2 ♂♂ ; Lap stream, the second concrete bridge from Ngoc waterfall ; 21°08.322′ N , 104°56.256′ E ; 28 Aug. 2014 ; T.S. Nguyen leg.; TS1413 ; ZVNU . – Nghe An Prov. • 12 ♂♂ , 5 ♀♀ ; Con Cuong , Lien Huong Village , Khe Thoi stream; 21 Dec. 2012 ; Q.H. Ngo leg.; NQH1209 ; ZVNU . Distribution First record for Vietnam . Other country: China ( Yunnan ). Remarks See Remarks under M. polhemusi .