Brachybarcinus vietnamensis, Heiss, 2010

Heiss, E., 2010, Review of the Barcinus complex with description of new taxa (Hemiptera: Heteroptera: Aradidae), Zootaxa 2448, pp. 1-25 : 21-23

publication ID

https://doi.org/10.5281/zenodo.5314600

DOI

https://doi.org/10.5281/zenodo.5314600

persistent identifier

https://treatment.plazi.org/id/0B7087C2-FFD8-FA45-19CC-FDD1FB44FDE2

treatment provided by

Felipe

scientific name

Brachybarcinus vietnamensis
status

n. sp.

Brachybarcinus vietnamensis n. sp.

( Figs. 41–48; photos 15,16)

Material examined: Holotype ♂ card mounted:”N. Vietnam, 1200m / 70km nw Hanoi, Tam Dao / 21°27N, 105°39E, 8 6.96/ Pacholatko+Dembicky”//” Holotype ♂ / Brachybarcinus / vietnamensis n. sp. / des. E.Heiss 2009” ( CEHI) GoogleMaps ; Paratypes: 2♂ 1♀ card mounted: “N. Vietnam, 1985/ Tam dao 3-11.6./ 900–1400m / J.Jelinek lgt.” ( CEHI) ; 1♀ pinned: “(N. Vietnam)/ Deo Kolea, 1250m / alt. Mt.Pia O ac/ Cao Bang Prov. / 14 May 1998 / M.Tomokuni leg.”//” Nat. Sci. Mus./ Tokyo: loan No. He-07-280” ; 1♀ pinned: ”(N. Vietnam)/ Mt. Tam Dao / 1000m alt. 27/ VII-2 VIII 1992 / Shinji Nagai leg.”//” Nat. Sci.Mus. / Tokyo : loan/ No. He-07-080 ( NSMT); 1♀ pinned:” China, Yunnan, Pingbian / Daweishan 1333m / N22°59.405, E 103°41.072 / 2009 V 23, Bai, XS/ Ent.Mus.CAU, Beijing “ ( CAU) GoogleMaps ; 1♂ pinned:” China, Yunnan, Hekou / Yaoshan 1345m / N22°49.435, E108°21.21 / 2009 V 22, Bai, XS/ Ent.Mus.CAU, Beijing ” ( CAU) GoogleMaps .

Diagnosis: Largest species differing from both other new species by the long lobulately produced deltg VII reaching far beyond paratergites VIII in both sexes.

Description: Male, micropterous.

Head: Distinctly longer than wide across eyes (27/22); genae produced over clypeus, apex acute; antennae 3.70 x as long as width of head across eyes (81.5/22); length of antennal segments I/II/III/IV = 31/ 11/31/8.5; postocular tubercle horizontally produced with acute apex, vertex with 2 (1+1) deep longitudinal furrows flanked by a stripe of setae.

Thorax: Pronotum 2.5x as wide as long at middle, anterior margin deeply excavated medially, laterally carinate; lateral margins bilobate, anterior lobe produced and larger, posterior one smaller and shorter (fig. 47), disk with 2 (1+1) flat ovate smooth callosities, densely pilose elsewhere, posterior margin slightly convex.

Mesonotum, Scutellum triangular, 3.8x as wide as long, sinuate lateral margins carinate, yellowish pilosity covering the anterolateral margins and a median longitudinal stripe on disk; corium reduced to small sclerites, lateral margins with two projections, inner posterior margin with small vestige of a membrane.

Metanotum fused to tergite I consisting of 2 (1+1) large ovate plates connected posteromedially, their disk with a deep furrow, posteriorly fused to tergite II but separated by a sinuate suture; tergite II with an ovate depression at middle, posterior margin bisinuate.

Abdomen: Tergal plat flat with slightly elevated posteriorly displaced scent gland II and sinuate depressions marking the apodemal impressions; lateral margins of deltg II concave, straight of deltg III, sinuate of deltg IV and V, their pe-angles distinctly angularly produced on deltg II and III, small and rounded on deltg IV and V and larger with rounded apex on deltg VI; tergite VII lobulately produced posteriorly, pygophore rounded, paratergites clavate and produced over pygophore reaching about ½ of lateral lobe of tergite VII.

Legs: Long and slender, femora and tibiae straight and cylindrical.

Genitalic structures: Pygophore globular, dorsal oval sclerite slightly produced posteriorly (figs. 44, 47), paramere of triangular outline (figs. 41–44).

Female: Basically as male but of larger size and wider abdomen; pe-angles of deltg IV and V more produced than in male; lateral projections of tergite VIII clavate, twice as slong as tricuspidate tergites IX and X.

Measurements: Holotype ♂: Length 13.6mm; width of abdomen across tergite II 65, VI 54, VII 45; variation of legth of two males: 11.8 mm, 13.7 mm; ratio length of antennae / width of head 3.21, 3.64. Females: Length: 13.6, 14.0, 14.2, 14.9 mm; head length / width 26/23, 27/23.5, 27/23, 28/24.5; pronotum w/ l 48/14, 42/17, 42/16, 44/17; w/l scutellum w/l 48/14, 52/15, 52/14, 55/15; length of antennal segments I/II/ III/IV = 25/11/28/9, 27/11/28/8, 33/12/31/8.5, 30/12/30/8; ratio length of antennae 3.17,3.15, 3.67, 3.26; width of abdomen across tergite III 73, 78, 73, 77.

Etymology: Refers to the main distribution area of this new taxon.

Remarks: The lobes of tergite VII of both specimens from Yunnan are shorter than those from Vietnam: however, as they share all essential characters with the latter they are regarded as conspecific.

NSMT

National Science Museum (Natural History)

CAU

China Agricultural University

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Aradidae

Genus

Brachybarcinus