Vietnamaptera secunda, Bai, Xiaoshuan, Heiss, Ernst & Cai, Wanzhi, 2011

Bai, Xiaoshuan, Heiss, Ernst & Cai, Wanzhi, 2011, Three new species of the apterous Carventinae genus Vietnamaptera (Hemiptera: Heteroptera: Aradidae) from China, Zootaxa 3016, pp. 29-36 : 30-33

Vietnamaptera secunda n. sp.

( Figs.1, 2 , 9–11 ; Photos 1, 2, 7)

Material examined. Holotype 3, glued on triangular card and labelled: China, Yunnan, Pingbian / Daweishan 1333 (m) / N 2259.405, E 10341.072 / 2009 V 23 Bai XS / Ent. Mus. CAU, Beijing // Holotype & / Vietnamaptera / secunda n. sp. / des. Bai, Heiss, Cai 2011 ( CAU). Paratypes: 63 2ƤƤ collected with holotype ( CAU, 1Ƥ CEHI); 1&1Ƥ China SE Yunnan / Daweishan Mts. 1700m / sifted / 15 V 2008 Vondrak ( CEHI).

Diagnosis. Differs from bogiessa by the clypeus shorter than antennal segment I, and from tertia n. sp. and quarta n. sp. by the characters given in the key.

Description. Apterous male; colouration of body black, legs and antennae dark brown, thorax and abdomen with bulbous dorsal elevations; surface with deep punctures and rugosities, partly smooth.

Head: Distinctly wider than long (23/19); clypeus shorter than antennal segment I, its apex subacute and projecting over lateral genae; antenniferous lobes short and pointed; antennae 1.22x as long as width of head (28/23), segment I strongly bent at base and thickest, II thinner and shortest, III thinnest and longest, IV as long as I and fusiform; length of antennal segments I/II/III/IV = 7/6/8/7; granular eyes oval inserted in head; postocular lobes roundly converging toward constricted collar; vertex with a median longitudinal ridge flanked by 2 (1+1) carinae and ovate depressions laterally. Rostrum arising from a slit-like atrium, as long as head, lateral margins of rostral groove carinate.

Pronotum: Fused to mesonotum but separated by a deep transverse sulcus. More than 5x as wide as long (53/ 10), rectangular anterolateral angles separated by a deep incision from lateral projection of ring-like collar; lateral margins anteriorly carinate and concave, posterolateral lobes elevated, rounded, with granulate surface and have an upper and a lower edge separated by a longitudinal sulcus; disk with a rugose elevation at middle, this longitudinally sulcate, laterally and posteriorly smooth, posterior margin convex and raised.

Mesonotum: Fused to metanotum but fusion line marked by a deep transverse groove. About 8x as wide as long (57/7) consisting of a rounded granulate elevation with a longitudinal sulcus at middle and 2 (1+1) lateral transverse sclerites with rugose surface, their lateral marginsraised and granulate and seemingly doubled by an upper and a lower lobe.

Metanotum: Fused to mtg I+II, a thin transverse suture indicating fusion line; median rounded granular elevation as high but shorter than that of mesonotum; lateral sclerites strongly raised along posterior margins, these sloping to anterior groove, their surface smooth anteriorly, rugose posteriorly, lateral margins raised to ovate granulate lobes.

Mtg I+II: Completely fused; mtg I with 2(1+1) large ovate rugose elevations depressed at middle; mtg II with a lower subrectangular smooth elevation at middle, surface lateral of these elevated structures smooth and sloping toward lateral margins.

Abdomen: Tergal plate with a bituberculate granulate elevation, this highest on mtg III–IV, lateral parts with smooth surface; a pivot-like projection on mtg V directed posteriorly and reaching tergite VII; deltg I+II fused to a triangular sclerite anteriorly reaching to mesonotum; lateral margins of deltg II–VII angularly projecting, surface with deep punctures and carinae, pe-angles raised and granulate; tergite VII strongly raised medially for reception of pygophore, its surface with two larger tubercles; spiracles II–VII lateral placed on reflexed vltg II–VII and visible from above, VIII terminal on paratergites VIII.

Venter: Surface of median parts of meso- and metasternum and sternites II–VII smooth and subglabrous, that of prosternum pleura and vltg II–VII granulate and rugose; sternite VII with 2(1+1) ovate finely granulate elevations ( Fig. 2 ).

Legs: Slender and unarmed, femora and tibiae straight and cylindrical; claws with thin long pseudopulvilli.

Genitalic structures: Pygophore declivous posteriorly, exposed surface irregularly rugose; parameres as Figs. 9–11 .

Female: General structures as in male but of larger size; pivot-like projection of mtg V reduced and not reaching tergite VII; sternite VII without a peculiar structure; tergite VIII shorter than triangularly projecting tergites IX+X.

Measurements. Holotype 3: length 5.0mm; width of abdomen across tergite III 3.05mm, variation of length in paratypes: 3 4.9–5.2mm, Ƥ 5.8–6.1mm.

Etymology. Refers to> secundus <(Latin) = second species of the genus.

PHOTOS 1–6. 1–5 Vietnamaptera species, dorsal view. 1 secunda 3; 2 secunda Ƥ; 3 tertia 3; 4 quarta 3; 5 bogiessa Holotype 3; 6 Signocoris kaszabi 3, dorsal view.

Figures

FIGURES 1 – 8. 1, 3, 5, 7 Head, pronotum and mesonotum of Vietnamaptera; 2, 4, 6, 8 sternites VI + VI of male; 1, 2 Vietnamaptera secunda n. sp.; 3, 4 Vietnamaptera tertia n. sp.; 5, 6 Vietnamaptera quarta n. sp.; 7, 8 Vietnamaptera bogiessa (from Zhang et al, 2010). Scale 1 mm. Abbreviations: g—gena; cl—clypeus; l 1 — lower lobe of elevated posterolateral angle of pronotum; ulditto, upper lobe; ms—mesonotum; pr—pronotum; st VI, VII—sternite VI, VII.

FIGURES 9 – 17 parameres in different positions of Vietnamaptera species. 9 – 11 secunda n. sp.; 12 – 14 quarta n. sp.; 15 – 17 tertia n. sp. Scale 0.1 mm.