Vietnamaptera tertia, 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 : 33-34

Vietnamaptera tertia n. sp.

( Figs.3, 4 , 15–17 ; Photos 3, 8)

Material examined. Holotype 3 glued on triangular card and labelled: China, Yunnan, Hekou / Yaoshan 1345m / N 2249.435, E 10821’21 / 2009 V 22, Bai XS / Ent. Mus. CAU, Beijing // Holotype 3 / Vietnamaptera / tertia n. sp. / des. Bai, Heiss, Cai 2011 ( CAU); paratype 33 1Ƥ collected with holotype are designated accordingly ( CAU, 13 CEHI).

Diagnosis. This species is distinguished from bogiessa by its clypeus being shorter than antennal segment I and differs from the other two new species by the characters given in the key.

Description. Apterous male, colouration of body black, legs and antennae dark brown, median irregular bulbous elevations developed on thorax and abdomen, surface with punctures and irregular rugosities, venter partly smooth.

Head: Slightly wider than long (17.5/16); clypeus shorter than antennal segment I, its apex blunt and not projecting over laterally expanded genae; antenniferous lobes short with subacute apices; antennae 1.45x as long as width of head (25.5/17.5), segment I bent at base and thickest, II more slender as long as I, III thinnest and longest, IV fusiform; length of antennal segments I/II/III/IV = 5.5/5.5/8/6.5; eyes granulate inserted in head; postocular lobes granular at base then straight converging to constricted collar; vertex with three longitudinal carinae and ovate lateral depressions. Rostrum arising from a slit-like atrium, as long as head, lateral margins of rostral groove carinate.

Pronotum: Pro-, meso-, and metanota and mtg I+II fused but separated by transverse grooves or sutures. About 5x as wide as long (43/9); anterolateral angles more rounded and carinate and not produced over lateral projections of ring-like collar from which separated by a deep incisures; lateral margins concave and carinate, posterolaterally raised and granulate, lower edge hardly visible from above; disk anteriorly with bilobate granulate elevation with median longitudinal groove, surface posteriorly depressed, lateral areas rugose.

Mesonotum: About 9x as wide as long (43/5) consisting of round granulate median elevation this fused to metanotal elevation and extending to posterior margin of latter; lateral transverse sclerites anteriorly smooth and rugose along carinate posterior margins, raised to granulate ovate lobes laterally.

Mtg I+II: Median granulate elevation of mtgI consisting of 2 (1+1) large transverse ovate humps these fused to smaller median granulate hump of mtg II, fusion line marked by a transverse furrow, lateral portions deeply depressed and smooth.

Abdomen: Tergal plate with a large rounded granular elevation this highest on mtg IV; lateral parts deeply punctured and rugose; pivot-like projection arising medially from tergite VII is directed posteriorly but not reaching the sloping mtg V–VI; structure of deltg II–VII and position of spiracles as in secunda n. sp.

Venter: Surface of median parts of meso- and metasterna, middle of sternites II–VII smooth and glabrous; prosternum, pleura, lateral parts and vltg of sternites II–VII granulate and rugose; sternite VII with a smooth ovate median plate, its apex finely punctured ( Fig. 4 ).

Legs: Slender and unarmed as in secunda n. sp.

Genitalic structures: Pygophore declivous posteriorly, surface granular; parameres as figs. 15–17.

Measurements. Holotype 3: length 3.8 mm, width of abdomen across tergite III 2.5 mm; paratype 3: length 4.0 mm.

Etymology. Refers to> tertius <(Latin) = the third species of the genus.

PHOTOS 7–11. lateral view. 7–10 Vietnamaptera species. 7 secunda Ƥ; 8 tertia 3; 9 quarta 3; 10 bogiessa holotype 3; 11 Signocoris kaszabi 3.

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.