Taiwanaptera guangxiana, Bai, Xiaoshuan, Heiss, Ernst & Cai, Wanzhi, 2017

Bai, Xiaoshuan, Heiss, Ernst & Cai, Wanzhi, 2017, A new genus and three new species of apterous Carventinae from China (Hemiptera: Heteroptera: Aradidae), Acta Entomologica Musei Nationalis Pragae (suppl.) 57 (1), pp. 35-46 : 42-43

Taiwanaptera guangxiana sp. nov.

( Figs 6 , 9 )

Type locality. China, Guangxi, Longshenghuaping, 748 m, 25°37.508′N, 109°54.514′E.

Type material examined. HOLOTYPE: ♀, ‘ China, Guangxi / Longshenghuaping / 2008 V 2, Bai XS / Ent.Mus.Imnu., Huhhot // HOLOTYPE / Taiwanaptera / guanxiana nov. sp. / des. BAI, HEISS, CAI 2013 [red label]’ ( EMNU) . PARATYPE: ♀, same data as holotype ( CEHI).

Description. Female (apterous). Surface of body glabrous with irregular rugosities, legs and antennae finely granulate; coloration dark reddish-brown, tibiae and antennal segments II–IV ochraceous.

Head slightly longer than width across eyes (1.2/1.1); granulate genae produced anteriorly over narrow clypeus leaving a gap in the middle, reaching about half the length of antennal segment I; clypeus longitudinally rugose, a round dorsal tubercle near apex; antenniferous lobes diverging anterolaterally, apex subacute; antennae 2.07 times as long as width of head (2.28/1.1), segment I thickest and constricted at base, II shorter and slender, III thinner and longest, IV fusiform with pilose apex; length of antennal segments I/II/III/IV = 0.65/0.45/0.73/0.45; eyes semicircular granulate; postocular lobes with a distinct tubercle anteriorly then strongly converging toward constricted neck, vertex granulate at middle with 2(1+1) ovate callosities laterally. Rostrum arising from a slit-like atrium, shorter than head; rostral groove deep, closed posteriorly.

Pronotum transverse, 2.5 times as wide as long (1.75/0.7); ring-like collar with a posterior median granulate elevation, delimited by a deep groove; lateral margins converging anteriorly, anterolateral angles roundly produced, not projecting over collar; lateral sclerites of disk irregularly rugose, raised toward lateral margins, separated at middle by a deep groove bearing a thin carina; posterior margin sinuate delimited by a smooth transverse ridge.

Mesonotum 2.7 times as wide as long (2.18/0.8); laterally expanded lobes rounded at apices, surface rugose; median scutellar projection as wide as diameter of lateral sclerites, its surface elevated and rugose.

Metanotum formed by 2 (1+1) oval rugose sclerites lateral of mesonotal scutellar projection, anteriorly separated from mesonotum by deep furrows; posterior margin bisinuate, fused to mtg I+II, fusion line indicated by a thin sulcus.

Mtg I+II fused, anterior margin forming a bisinuate smooth transverse ridge from which 2 narrower lateral and one wide median smooth ridge produced posteriorly with 4 (2+2) deep oval depressions between them; posterior margin slightly concave at middle.

Abdomen. Fused tergal plate of oval outline, surface with a median elevation highest on mtg IV–V; lateral apodemal impressions flat, delimited by smooth carinate margins; deltg II+III fused, deltg III–VII separated by sutures, their surface granulate and raised along lateral margin; posteriorly to dorsally visible spiracle VI with small rim and posterior to spiracle VII a triangular projection representing the dorsally reflexed portions of veltg VI and VII.

Venter. Prosternum with a median ridge, meso- and metasternum fused to sternites II+III, flat matt depression medially; spiracles II–IV ventral,V sublateral but visible from above, VI and VII lateral and visible, VIII dorsal on transverse paratergites VIII.

Legs long and slender, straight; protibial comb present; claws with long thin pulvilli.

Measurements. Female: Holotype: Length 6.2 mm; width of abdomen across tergite III 3.25, IV 3.35, V 3.25, VI 3.0; width of paratergite VIII 0.9; paratype: length 6.0 mm; head length/width 1.2/1.1; pronotum length/width 0.7/1.65; mesonotum length/width 0.75/2.05; length of antennal segments I/II/III/IV = 0.6/0.45/0.68/0.45; ratio length of antennae / width of head 1.97; width of abdomen across tergites III 3.1, IV 3.15, V 3.1, VI 2.88.

Etymology. Adjective guangxianus (- a, - um), given after the province of Guangxi where this species was discovered.

Distribution. So far only known from the type specimens from China, Guangxi province.

Figures

Figs 5–8. Taiwanaptera species. 5 – T. glabra Heiss & Nagashima, 2008, topotype, female, dorsal view (6.2 mm); 6 – T. guangxiana sp. nov., holotype, female, dorsal view (6.2 mm); 7 – T. montana sp. nov., paratype, female, dorsal view (Yunnan, Huanglianshan) (6.2 mm); 8 –T. cf. montana, female, dorsal view (Yunnan, Daweishan) (6.0 mm).

Figs 9–12. Taiwanaptera species, head and thorax. 9 – T. guangxiana sp. nov., holotype female; 10 – T. montana sp. nov., paratype, female (Yunnan: Huanglianshan); 11 – T. glabra Heiss & Nagashima, 2008, topotype, female; 12 – T. cf. montana, female (Yunnan: Daweishan). Arrows indicate differences in structure. Scale bar: 0.5 mm.