Micronecta (Micronecta) drepani Nieser, 2000

Ha, Tuyet Ngan & Tran, Anh Duc, 2021, Taxonomy of Micronectidae (Heteroptera: Nepomorpha) from Vietnam, with descriptions of 11 new species, European Journal of Taxonomy 756, pp. 1-82 : 28-29

Micronecta (Micronecta) drepani Nieser, 2000

Figs 5C , 7A–C

Micronecta drepani Nieser, 2000: 278–281 , 287, figs 1–10 (type locality: northern Thailand).

Micronecta drepani – Nieser et al. 2005: 190, 191 (notes, checklist). — Zettel et al. 2017: 40 (record Cambodia).

Diagnosis

Body length 1.9–2.1. Pronotum slightly longer than median head length. Hemelytron punctate, corium with patchy, indistinct brown markings.

Males: fore femur with a pair of spines on proximal third, two spines distally; fore tibia with three spines on distal third ventrally; palar claw large, sub-triangular with straight apical margin. Median lobe of sternite VII short and broad with four long setae and an angular apex. Free lobe slightly expanded posteriorly, mesial angle rounded, lateral angle produced with ca 20 long setae ( Fig. 7A ). Left paramere: shaft broad, flattened, basal part of shaft with a short ridge running to lateral margin, apex rounded; basal lobe long, tongue-shaped ( Fig. 7C ). Right paramere: shaft evenly curved, parallel sided, apex rounded ( Fig. 7B ).

Material examined

VIETNAM – Ha Giang Prov. • 1 ♂, 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 • 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 • 1 ♂, 1 ♀; Xin Man, Nam Dan commune, Thac Tien-Deo Gio , waterfall and stream ; 11 May 2014; A.D. Tran et al. leg.; TAD1414 ; ZVNU . – Cao Bang Prov. • 12 ♂♂, 8 ♀♀; Phia Oac- Phia Den N.P., road to Quang Thanh commune, Khue Lan stream; 29 Oct. 2020; V.V. Nguyen et al. leg.; PO20-07 ; ZVNU . – Bac Kan Prov. • 8 ♂♂, 9 ♀♀; Ba Be, Hoang Tri commune, Hoang Tri waterfall ; 22 Aug. 2012; A.D. Tran et al. leg.; TAD1218; ZVNU . – Lang Son Prov. • 3 ♂♂, 9 ♀♀; Loc Binh, Mau Son, Khuoi Tang stream; 590 m a.s.l.; 6 Nov. 2020; A.D. Tran et al. leg.; TAD20-34 ; ZVNU . – Phu Tho Prov. • 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 • 3 ♂♂, 2 ♀♀; Xuan Son N.P. , Dong Son, Than stream, site 2; 29 Aug. 2013; A.D. Tran et al. leg.; TAD1347 ; ZVNU • 3 ♂♂, 10 ♀♀; Xuan Son N.P., Xoan stream, near its confluence with Ha Bang stream; 21°5.303′ N, 104°57.559′ E; 27 Aug. 2014; T.S. Nguyen leg.; TS1407 ; ZVNU • 4 ♂♂, 4 ♀♀; Xuan Son N.P., Lap stream, the second concrete bridge from Ngoc waterfall; 21°08.322′ N, 104°56.256′ E; 28 Aug. 2010; T.S. Nguyen leg.; TS1413 ; ZVNU • 8 ♂♂, 5 ♀♀; Xuan Son N.P. , Than stream, site 2; 21°11.257′ N, 104°52.382′ E; 28 Aug. 2014; T.S. Nguyen leg.; TS1415 ; ZVNU • 29 ♂♂, 32 ♀♀; Xuan Son N.P. , Than stream, site 2; 21°11.257′ N, 104°52.382′ E; 24 May 2015; T.S. Nguyen leg.; TS1515 ; ZVNU • 2 ♂♂, 1 ♀; Xuan Son N.P. , Than stream, site 2; 21°11.257′ N, 104°52.382′ E; 8 May 2016; T.S. Nguyen leg.; TS1615 ; ZVNU • 3 ♂♂, 7 ♀♀; Xuan Son N.P. , Coi stream, site 2, near concrete bridge; 21°09.130′ N, 104°56.761′ E; 29 Apr. 2014; T.S. Nguyen leg.; TS1418 ; ZVNU • 2 ♂♂, 1 ♀; Xuan Son N.P. , Coi stream, site 2, near concrete bridge; 21°09.130′ N, 104°56.761′ E; 24 May 2015; T.S. Nguyen leg.; TS1518 ; ZVNU • 9 ♂♂, 13 ♀♀; Xuan Son N.P. , Xoan stream, Xoan village area; 21°05.270′ N, 104°57.591′ E; 23 May 2015; T.S. Nguyen leg.; TS1509 ; ZVNU • 1 ♂, 8 ♀♀; Xuan Son N.P. , Xoan stream, Xoan village area; 21°05.270′ N, 104°57.591′ E; 26 Aug. 2015; T.S. Nguyen leg.; TS8509 ; ZVNU • 4 ♂♂, 4 ♀♀; 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 • 3 ♂♂, 7 ♀♀; Xuan Son N.P. , Than stream, site 3; 21°11.393′ N, 104°52.625′ E; 27 Aug. 2015; T.S. Nguyen leg.; TS8516 ; ZVNU • 5 ♂♂, 1 ♀; Xuan Son N.P. , Lap stream, the first concrete bridge from Ngoc waterfall; 21°8.398′ N, 104°56.303′ E; 7 May 2016; T.S. Nguyen leg.; TS1612 ; ZVNU . – Hanoi • 5 ♂♂, 4 ♀♀; Ba Vi N.P. , Minh Quang, Cai stream; 65 m a.s.l.; 17 Dec. 2011; Q.H. Ngo et al. leg.; TAD1126 ; ZVNU • 2 ♂♂, 1 ♀; Ba Vi N.P., Khoang Xanh, Tien stream; 95 m a.s.l.; 17 Dec. 2011; Q.H. Ngo and A.D. Tran leg.; TAD1127 ; ZVNU • 4 ♂♂, 4 ♀♀; Ba Vi N.P. , Minh Quang, Cai stream; 65 m a.s.l.; 26 Apr. 2012; Q.H. Ngo et al. leg.; TAD1207 ; ZVNU • 1 ♂; Ba Vi N.P. , Khoang Xanh, Tien stream; 95 m a.s.l.; 27 Apr. 2012; Q.H. Ngo and A.D. Tran leg.; TAD1208 ; ZVNU . – Vinh Phuc Prov. • 2 ♂♂, 1 ♀; Tam Dao N.P. , Suoi Mo (upstream of Thac Bac waterfall); 16 Jun. 2003; A.D. Tran leg.; TAD0350 ; ZRC • 5 ♂♂, 5 ♀♀; Tam Dao N.P. , Suoi Mo ; 9 and 15 Jul. 2019; A.D. Tran leg.; ZVNU . – Quang Binh Prov. • 2 ♀♀; Phong Nha, Chay stream; 17 Jul. 2004; A.D. Tran leg.; DY0410 ; ZRC . – Quang Nam Prov. • 1 ♂, 2 ♀♀; Duy Xuyen District, My Son temple complex; 15°45.439′ N, 108°07.577′ E; Aug. 2016; T.D. Chu leg.; MS1614 ; ZVNU • 1 ♀; Duy Xuyen District, My Son temple complex; 15°45.482′ N, 108°07.606′ E; Apr. 2017; T.D. Chu leg.; MS1715 ; ZVNU . – Lam Dong Prov. • 7 ♂♂, 4 ♀♀; Bao Loc, Damb’ri waterfall; 19 May 2003; A.D. Tran leg.; TAD0326 ; ZRC .

Distribution

China (Yunnan), Thailand ( Nieser et al. 2005), Cambodia ( Zettel et al. 2017). First records for Vietnam.

Remarks

See Remarks under M. cultellata sp. nov.

Figures

Fig. 5. Habitus photos of species of Micronecta Kirkaldy, 1897, ♂♂. A. M. grisea (Fieber, 1844) (ZRC). B. M. guttatostriata Lundblad, 1933 (ZVNU). C. M. drepani Nieser, 2000 (ZVNU). D. M. erythra Nieser, Chen & Yang, 2005, right hemelytron (ZVNU). E. M. cultellata sp. nov., holotype (ZVNU). F. M. anatolica Lindberg, 1922 (ZVNU). G. M. arcuata sp. nov., holotype (ZVNU). H. M. fulvopicta sp. nov., holotype (ZVNU). I. M. acuminata sp. nov., holotype (ZVNU), right hemelytron and genitalia dissected. J–L. M. vietnamica sp. nov., J = holotype (ZVNU). All to the same scale.

Fig. 7. Morphological features of species of Micronecta Kirkaldy, 1897, ♂♂. A–C. M. drepani Nieser, 2000 (ZVNU). D–F. M. erythra Nieser, Chen & Yang, 2005 (ZVNU). A, D = free lobe; B, E = right paramere; C, F = left paramere.