Micronecta (Micronecta) arcuata, Tran, 2021

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 : 34-36

publication ID

https://doi.org/ 10.5852/ejt.2021.756.1407

publication LSID

lsid:zoobank.org:pub:4A60FB62-20D7-4DC9-A4EA-BCE633730111

DOI

https://doi.org/10.5281/zenodo.5033082

persistent identifier

https://treatment.plazi.org/id/388F73BC-CA08-4397-8570-B2B163B622AC

taxon LSID

lsid:zoobank.org:act:388F73BC-CA08-4397-8570-B2B163B622AC

treatment provided by

Felipe

scientific name

Micronecta (Micronecta) arcuata
status

sp. nov.

Micronecta (Micronecta) arcuata sp. nov.

urn:lsid:zoobank.org:act:388F73BC-CA08-4397-8570-B2B163B622AC

Figs 5G View Fig , 9F–K View Fig

Diagnosis

Body length 1.6–2.2. Pronotum longer than median head length. Hemelytron punctate, with brown markings at middle part.

Males: fore femur with a pair of spines on middle third ventrally, two spines on distal third dorsally; fore tibia without spine; pala: lower row with ca 18 bristles, upper row with ca 12 bristles; palar claw sub-triangular, apical margin nearly straight ( Fig. 9F View Fig ). Median lobe of sternite VII short, with four long setae and an angular apex ( Fig. 9H View Fig ). Free lobe sub-rectangular, mesial angle rounded, lateral angle square with ca 17 long setae, posterior margin slightly sinuate ( Fig. 9I View Fig ). Left paramere: shaft broad, flat, and evenly curved outwards; apex narrowly rounded; basal lobe large, sub-rectangular ( Fig. 9K View Fig ). Right paramere: shaft parallel sided, strongly bent at distal fourth (by ca 45°), slightly thickened before rounded apex; pars stridens processus with ca 15 ridges ( Fig. 9J View Fig ).

Etymology

The species epithet ‘ arcuata ’ refers to the shape of the right paramere, which is slender and bent like a bow.

Material examined

Holotype

VIETNAM • ♂; Ha Giang Prov., Vi Xuyen, Nat’ road 2, Phuong Do commune, Phuong Do stream, near bridge; 9 May 2014; A.D. Tran et al. leg.; TAD1407 ; ZVNU.

Paratypes

VIETNAM – Ha Giang Prov. • 4 ♂♂, 1 ♀; same locality data as for holotype; ZVNU . – Lang Son Prov. • 1 ♂; 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. • 1 ♂, 2 ♀♀; Xuan Son N.P. , Ban Cai, Cai stream, site 3, by the road to Tan Son; 7 Jun. 2013; A.D. Tran et al. leg.; TAD1339 ; ZVNU 2 ♂♂, 2 ♀♀; Xuan San N.P. , Kim Thuong, Ha Bang stream; 28 Aug. 2013; A.D. Tran et al. leg.; TAD1344 ; ZVNU 1 ♀; Xuan Son N.P. , Ban Coi, Coi stream, site 1, water from underground ; 29 Aug. 2013; A.D. Tran et al. leg.; TAD1349 ; ZVNU 1 ♂, 2 ♀♀; Xuan Son N.P. , Tan Ong stream, 4 km from Chin Tang waterfall; 21°04.288′ N, 104°57.271′ E; 26 Aug. 2014; T.S. Nguyen leg.; TS1405 ; ZVNU GoogleMaps 2 ♂♂, 7 ♀♀; 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 GoogleMaps 1 ♂, 1 ♀; 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 GoogleMaps 13 ♂♂, 9 ♀♀; Xuan Son N.P. , Than stream, site 2; 21°11.257′ N, 104°52.382′ E; 28 Aug. 2015; T.S. Nguyen leg.; TS1415 ; NHMW GoogleMaps 10 ♂♂, 14 ♀♀; Xuan Son N.P. , Ha Bang stream, Ha Bang village area; 21°04.343′ N, 104°59.182′ E; 25 May 2015; T.S. Nguyen leg.; TS1510 ; ZRC GoogleMaps 5 ♂♂, 4 ♀♀; 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 GoogleMaps 3 ♂♂; 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 GoogleMaps 4 ♂♂, 6 ♀♀; Xuan Son N.P ., Xoan stream, near Lang Village; 21°5.453′ N, 104°56.122′ E; 5 May 2016; T.S. Nguyen leg.; TS1601 ; ZVNU GoogleMaps 3 ♂♂; 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 GoogleMaps 6 ♂♂, 5 ♀♀; Xuan Son N.P. , Than stream, site 3; 21°11.393′ N, 104°52.625′ E; 7 May 2016; T.S. Nguyen leg.; TS1616 ; ZVNU GoogleMaps 1 ♂; Xuan Son N.P. , Xoan stream, near its confluence with Ha Bang stream; 21°5.303′ N, 104°57.559′ E; 22 May 2015; T.S. Nguyen leg.; TS1507 ; ZVNU GoogleMaps 3 ♂♂, 4 ♀♀; Xuan Son N.P. , Xoan stream, near its confluence with Ha Bang stream; 21°5.303′ N, 104°57.559′ E; 5 May 2015; T.S. Nguyen leg.; TS1607 ; ZVNU GoogleMaps 6 ♂♂, 3 ♀♀; 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 GoogleMaps 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 GoogleMaps 1 ♂; Xuan Son N.P. , Tan Ong stream, 4 km from Chin Tang waterfall; 21°04.288′ N, 104°57.271′ E; 22 May 2015; T.S. Nguyen leg.; TS1505 ; ZVNU GoogleMaps 1 ♂, 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 GoogleMaps 2 ♂♂, 3 ♀♀; Xuan Son N.P. , Ha Bang stream, near its confluence with Xoan stream; 21°5.318′ N, 104°58.87′ E; 6 May 2016; T.S. Nguyen leg.; TS1606ĐT ; ZVNU GoogleMaps 1 ♂, 2 ♀♀; Xuan Son N.P. , Ha Bang stream, Ha Bang village area; 21°04.343′ N, 104°59.182′ E; 7 May 2016; T.S. Nguyen leg.; TS1610 ; ZVNU GoogleMaps 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 GoogleMaps 1 ♂, 5 ♀♀; 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 GoogleMaps 1 ♂, 2 ♀♀; Xuan Son N.P. , 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 GoogleMaps . – Hanoi • 2 ♂♂, 6 ♀♀; 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 . – Hoa Binh Prov. • 12 ♂♂, 30 ♀♀; Lac Son, Tu Do commune, Mu waterfall and down stream ; 27 Aug. 2020; A.D. Tran, P.L. Le and T.C. Nguyen leg.; TAD20-02 ; ZVNU .

Description

COLOUR ( Fig. 5G View Fig ). Dorsum generally orangish-brownish yellow. Frons and vertex pale yellowish, eyes reddish brown. Pronotum yellowish brown, with one longitudinal yellow stripe on anterior part and two transverse yellow stripes on posterior part. Hemelytron with minute red dots scattered especially on hyaline anterior band of clavus, on boundary between corium and embolium. Corium with three obscure light brown markings at middle part. Membrane translucent and brownish. Venter of thorax and abdomen, and legs pale or light yellow.

Structural characteristics

MACROPTEROUS MALES. Body length 1.63–2.16 (holotype: 1.73), width 1.0–1.13 (holotype: 0.81). Head width 0.62–0.66 (holotype: 0.63). Pronotum about 2.5 times as wide as long (0.70: 0.29). Pronotum slightly wider than head. Synthlipsis about 1.5 times as wide as posterior width of an eye (0.30: 0.23). Lengths of leg segments: fore leg: femur 0.28, tibia 0.13, pala 0.12; middle leg: femur 0.58, tibia 0.20, tarsus 0.25, claw 0.18; hind leg: femur 0.45, tibia 0.28, tarsus I 0.29, tarsus II 0.12, claw 0.03. Prestrigilar flap on segment V with short apex ( Fig. 9G View Fig ). Strigil present. Median lobe of sternite VII, free lobe, and parameres as in diagnosis.

MACROPTEROUS FEMALES. Body length 1.63–2.09, width 0.94–1.19. Head width 0.64–0.67. Pronotum about 2.5 times as wide as long (0.67: 0.22). Pronotum slightly wider than head. Synthlipsis about 1.5 times as wide as posterior width of an eye (0.32:0.20). Lengths of leg segments: fore leg: femur 0.23, tibiotarsus 0.2; middle leg: femur 0.55, tibia 0.2, tarsus 0.3, claw 0.18; hind leg: femur 0.41, tibia 0.29, tarsus I 0.28, tarsus II 0.12, claw 0.03.

Distribution

Northern Vietnam: Ha Giang, Phu Tho, Hanoi.

Remarks

See Remarks under M. acuminata sp. nov.

NHMW

Austria, Wien, Naturhistorisches Museum Wien

ZRC

Singapore, National University of Singapore, Raffles Museum of Biodiversity Research, Zoological Reference Collection

NHMW

Naturhistorisches Museum, Wien

ZRC

Zoological Reference Collection, National University of Singapore

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Corixidae

Genus

Micronecta

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