Cathaycoris bibulbosus, 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 : 38-41

Cathaycoris bibulbosus sp. nov.

( Figs 1–4 )

Type locality. China, Yunnan, Pingbian, Daweishan, 1333 m, 22°59.405′N, 103°41.072′E.

Type material examined. HOLOTYPE: ♁, ‘ China, Yunnan, Pingbian / Daweishan 1333m / N 22°59.405, E 103°41.072 / 2009 V 23, Bai XS / Ent. Mus. CAU Beijing // HOLOTYPE ♁ / Cathaycoris nov.gen. / bibulbosus nov. sp. / des. BAI, HEISS, CAI 2013 [red label]’ ( CAUC) . PARATYPE: ♀, same data as holotype ( CEHI).

Description. As the generic description is already detailed and based on the type specimens, only few additional characters are added here.

Male (apterous) ( Figs 1–3 ). Head only slightly longer than width across eyes (1.15/1.13); apex of clypeus free, flanked by laterally produced genae reaching half of antennal segment I; antenniferous lobes diverging anterolaterally; antennae 1.75 times as long as width of head (1.98/1.13), segment I thickest and longest, II–IV thinner and shorter, length of segments I/ II/III/IV = 0.6/0.43/0.55/0.4; eyes globose, granulate; postocular lobes with a distinct lateral tubercle then converging to constricted neck; vertex raised at middle, flanked by 2 (1+1) oval callosities.

Pronotum strongly transverse; anterior lobe with a ring-like collar triangularly produced posteriorly, posterior lobe much wider than anterior one, anterolaterally produced, lateral margin concave, humeri raised.

Mesonotum. T-shaped scutellum-like plate strongly raised posteriorly, flat with rugose surface laterally; lateral wing pad-like oval sclerites fused to T-shaped sclerite separated by a thin suture.

Metanotum. Median part covered by mesonotal scutellar structure, lateral sclerites sloping to lateral margins, posteriorly fused to mtgI marked by a distinct suture.

MtgI+II completely fused, mtgI raised medially to 2 (1+1) high granulate humps, mtgII sloping posteriorly.

Venter ( Fig. 3 ). Median surface glabrous, lateral parts and pleural regions rather matt, granulate and rugose; meso- and metasternum and mstII with a flat median depression of matt surface, spiracles II ventral, III–IV sublateral close to lateral margin and slightly visible from above, V–VII lateral on dorsally reflexed vltg V–VII and visible from above, VIII terminal on ptg VIII.

Male genitalia. Pygophore conical, twice as wide as long, surface granulate. The single male was not dissected for the study of parameres.

Legs long and slender, femora moderately incrassate, tibiae cylindrical, claws with thin pulvilli.

Female ( Fig. 4 ). Generally as male but of larger size and more rounded, wider abdomen; tergite VII glabrous at middle, slightly raised to a granulate transverse ridge posteriorly; sternite VII lacking tubercle.

Measurements. Male (holotype): body length 5.7 mm (including gaping pygophore); length / width of pronotum 0.6/1.6 (1.7 posterior lobe); length / width of mesonotum 0.6/2.0; length / width of mtgI+II 0.6/1.55; width of abdomen across tergite III – 2.75, IV – 2.75, V – 2.65, VI – 1.3.

Female (paratype): body length 6.2 mm; length / width of head 1.3/1.25; length / width of pronotum 0.75/1.75 (1.95 posterior lobe); length / width of mesonotum 0.65/2.25; length / width of mtgI+II 0.7/1.8; width of abdomen across tergite III – 3.25, IV – 3.3, V – 3.2, VI – 2.85; length of antennal segments I/II/III/IV = 0.63/0.45/0.6/0.4, ratio length of antennae / width of head 1.66.

Etymology. The species name is a composed adjective bibulbosus (- a, - um) referring to the two distinct elevated structures on mtgI and tergal plate, composed of the Latin words ‘ bi- ’ (for double) and ‘ bulbus ’ (for round elevation).

Distribution. China: Yunnan.

Figures

Figs 1–4. Cathaycoris bibulbosus gen. & sp. nov. 1 – holotype, male, dorsal view (5.7 mm); 2 – holotype, male, lateral view; 3 – paratype, male, ventral view; 4 – paratype, female, dorsal view (6.2 mm).