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 ( Micronecta ) ornitheia Nieser, Chen & Yang, 2005 Figs 13A , 14A–D Micronecta ornitheia Nieser, Chen & Yang, 2005: 190 , 197–200, figs 32–41 ( type locality: Yunnan , China ). Micronecta ornitheia – Chen, Nieser & Sangpradub 2006: 779 (record Thailand ). Diagnosis Body length 1.7–1.8. Pronotum longer than median head length. Dorsum generally light brown. Hemelytron with small, irregular-shaped reddish marks, mostly on costal part; embolium with a longitudinal dark grey stripe and two brown patches ( Fig. 13A ). Males: fore femur with two spines on middle third, a spine on distal third dorsally, and a pair of spines distally; fore tibia with three large and one small spine on distal third; palar claw distally widened, apical margin rounded. Median lobe of sternite VII narrow, with pointed apex and four long setae ( Fig. 14A ). Free lobe slightly expanded distally, mesial angle rounded, lateral angle slightly produced with ca 20 long setae, posterior margin nearly straight ( Fig. 14B ). Left paramere: shaft broad, flat, with a deep notch along lateral margin near base, then followed by a triangular projection, distal part parallel sided, apex of paramere rounded; basal lobe longer than wide, sub-trapezoid ( Fig. 14D ). Right paramere: shaft slender proximally and club-shaped apically ( Fig. 14C ). Material examined VIETNAM – Lao Cai Prov. • 36 ♂♂ , 31 ♀♀ ; Sa Pa , Thanh Phu , near junction of Nam Cang and Muong Hoa streams ; 26 Oct. 2013 ; Q.H. Ngo leg.; TAD1360 ; ZVNU • 3 ♂♂ , 4 ♀♀ ; Sa Pa , Hoang Lien N.P. , Cat Cat ; 1 Jun. 2003 ; A.D. Tran leg.; TAD0336 ; ZRC . – Ha Giang Prov. • 3 ♂♂ , 4 ♀♀ ; Bac Me , road 176 , Minh Son commune , stream at Ban Van bridge ; 7 May 2014 ; A.D. Tran et al. leg.; TAD1403 ; ZVNU • 1 ♂ , 6 ♀♀ ; Yen Minh , Na Khe commune, stream near Nat’ road 4C ; 8 May 2014 ; A.D. Tran et al. leg.; TAD1404 ; ZVNU • 2 ♂♂ ; Vi Xuyen , Xin Chai commune , Da stream by the road from Thanh Thuy to Lao Chai ; 9 May 2014 ; A.D. Tran et al. leg.; TAD1405 ; ZVNU • 15 ♂♂ , 8 ♀♀ ; Vi Xuyen , Nat’ road 2 , Phuong Tien commune, Suu stream, near bridge ; 9 May 2014 ; A.D. Tran et al. leg.; TAD1406 ; ZVNU • 7 ♂♂ , 11 ♀♀ ; Vi Xuyen , Nat’ road 2 , Phuong Tien commune, Suu stream, near bridge ; 9 May 2014 ; A.D. Tran et al. leg.; TAD1407 ; ZVNU • 1 ♀ ; Vi Xuyen , National road 4C , Thuan Hoa commune, Nam Dieng stream, ca 12.5 km to Ha Giang city ; 9 May 2014 ; A.D. Tran et al. leg.; TAD1409 ; ZVNU • 1 ♂ , Xin Man , road 178 , tributary of Nam Yen River , near bridge ca 2 km from Coc Pai town ; 11 May 2014 ; A.D. Tran et al. leg.; TAD1412 ; ZVNU . – Cao Bang Prov. • 5 ♂♂ , 20 ♀♀ ; Trung Khanh , Duc Hong commune, stream; 19 Dec. 2013 ; A.D. Tran et al. leg.; TAD1376 ; ZVNU • 1 ♂ , 4 ♀♀ ; Bao Lac , Dinh Phung commune, near Tung Suu, stream by the Nat’ road 34 ; 20 Dec. 2013 ; A.D. Tran et al. leg.; TAD1378 ; ZVNU • 20 ♂♂ , 29 ♀♀ ; Bao Lac , Hung Dao commune, Nhi Ao River , near Nam Xui bridge ; 20 Dec. 2013 ; A.D. Tran et al. leg.; TAD1380 ; ZVNU • 3 ♂♂ , 12 ♀♀ ; Bao Lac , Bao Toan commune, Na Roa Village , Khuoi Rong stream, tributary of Gam River ; 20 Dec. 2013 ; A.D. Tran et al. leg.; TAD1381 ; ZVNU . – Phu Tho Prov. • 1 ♂ , 2 ♀♀ ; Xuan Son N.P. , Ban Coi , Coi stream, site 3, by the road to Tan Son ; 7 Jun. 2013 ; A.D. Tran et al. leg.; TAD1339 ; ZVNU • 2 ♂♂ , 1 ♀ ; Xuan Son N.P. , Ha Bang stream, near its confluence with Xoan stream ; 21°5.318′ N , 104°58.87′ E ; 22 May 2015 ; T.S. Nguyen leg.; TS1506 ; ZVNU • 1 ♂ , 2 ♀♀ ; Xuan Son N.P. , Xoan stream , near Lang Village ; 21°5.453′ N , 104°56.122′ E ; 21 May 2015 ; T.S. Nguyen leg.; TS1501 ; ZVNU • 1 ♂ ; Xuan Son N.P. , Xoan stream, Xoan village area; 21°05.270′ N , 104°57.591′ E ; 7 May 2016 ; T.S. Nguyen leg.; TS1609 ; ZVNU • 1 ♂ ; Xuan Son N.P. , Chieng stream, near ranger station ; 21°06.072′ N , 104°59.433′ E ; 27 Aug. 2014 ; T.S. Nguyen leg.; TS1408 ; ZVNU • 1 ♂ , 4 ♀♀ ; Xuan Son N.P. , Chieng stream, near ranger station ; 21°06.072′ N , 104°59.433′ E ; 22 May 2015 ; T.S. Nguyen leg.; TS1508 ; ZVNU • 1 ♂ , 5 ♀♀ ; Xuan Son N.P. , Chieng stream, near ranger station ; 21°06.072′ N , 104°59.433′ E ; 25 Aug. 2015 ; T.S. Nguyen leg.; TS8508 ; ZVNU • 2 ♂♂ , 3 ♀♀ ; Xuan Son N.P. , Chieng stream, near ranger station ; 21°06.072′ N , 104°59.433′ E ; 6 May 2016 ; T.S. Nguyen leg.; TS1608 ; ZVNU • 2 ♂♂ , 3 ♀♀ ; Xuan Son N.P. , Coi stream, site 1, by the road to Tan Son ; 21°09.204′ N , 104°56.927′ E ; 8 May 2016 ; T.S. Nguyen leg.; TS1617 ; ZVNU . – Thanh Hoa Prov. • 5 ♂♂ , 1 ♀ ; Pu Hu Nature Reserve , Muong Lat , Trung Ly , Co Luong , Cha Lan stream; 4 Apr. 2013 ; T.D. Pham leg. ; PH1301 ; ZVNU • 2 ♂♂ ; Pu Luong Nature Reserve , Ba Thuoc , Co Lung , Ban Khuyn , Khuyn stream; 18 Mar. 2013 ; T.D. Pham leg.; PL1303 ; ZVNU . – Nghe An Prov . • 24 ♂♂ , 29 ♀♀ ; Ky Son , Nat’ road 7, Ta Ca commune, Loi stream; 16 Apr. 2013 ; A.D. Tran et al. leg.; TAD1301 ; ZVNU • 9 ♂♂ , 5 ♀♀ ; Ky Son , Nat’ road 7 at km 191+572 , stream at Ban Na bridge ; 16 Apr. 2013 ; A.D. Tran et al. leg.; TAD1304 ; ZVNU • 43 ♂♂ , 34 ♀♀ ; Ky Son , Nat’ road 7 at km 182+950, stream at Khe Nan bridge ; 16 Apr. 2013 ; A.D. Tran et al. leg.; TAD1305 ; ZVNU • 1 ♂ , 1 ♀ ; Con Cuong , Lien Huong Village , Khe Thoi stream; 21 Dec. 2012 ; Q.H. Ngo leg.; NQH1209 ; ZVNU • 2 ♂♂ , 3 ♀♀ ; Con Cuong , Tung Huong Village , Khe Thoi stream; 21 Dec. 2012 ; Q.H. Ngo leg.; NQH1210 ; ZVNU . – Ha Tinh Prov . • 9 ♂♂ , 4 ♀♀ ; Vu Quang N.P. , Song Con River ; 23 Apr. 2003 ; A.D. Tran leg.; TAD0302 ; ZRC . Fig. 13. Habitus photos of species of Micronecta Kirkaldy, 1897 , ♂♂. A . M. ornitheia Nieser, Chen & Yang, 2005 (ZVNU). B . M. tuwanoni Nieser, Chen, Leksawasdi, Thanyakam & Duangsupa, 2004 (ZVNU). C–D . M. clavata sp. nov. , two colour forms (ZVNU), C = holotype. E . M. sinuata sp. nov. , holotype (ZVNU). F . M. undulata sp. nov. , holotype (ZVNU). G–H . M. nieseri sp. nov. , two colour forms (ZVNU), G = holotype. I–J . M. pingae sp. nov. , two colour forms (ZVNU), I = holotype. K . M. haliploides Horváth, 1904 (ZVNU). All to the same scale. Distribution China , Thailand ( Nieser et al. 2005 ; Chen et al. 2006 ). First records for Vietnam . Remarks Nieser et al. (2005) already noted the similarity (right paramere) and differences (body length, dorsal colour pattern, and left paramere) between M. ornitheia and M. sanctaecatherinae Hutchinson, 1940 , Fig. 14. Morphological features of species of Micronecta Kirkaldy, 1897 , ♂♂. A–D . M. ornitheia Nieser, Chen & Yang, 2005 (ZVNU). E–G . M. tuwanoni Nieser, Chen, Leksawasdi, Thanyakam & Duangsupa, 2004 (ZVNU). A = median lobe of sternite VII; B, E = free lobe; C, F = right paramere; D, G = left paramere. which is only known from India and Sri Lanka . Nieser et al. (2005) also made a comparison between the parameres of M. ornitheia , M. pocsi and related species from China and India . See also Remarks under M. clavata sp. nov. for additional differences between M. ornitheia and other similar species occurring in Vietnam .