Pahangiessa schuhi, Heiss, 2010

Heiss, E., 2010, A new genus and species of micropterous Oriental Aradidae (Hemiptera, Heteroptera, Aradidae), Linzer biologische Beiträge 42 (1), pp. 81-87 : 83-84

Pahangiessa schuhi nov.sp. ( Fig. 3, 4 ; photo 3)

M a t e r i a l e x a m i n e d: Holotype 3: Malaysia, Pahang, Cameron Highlands Gn. (Gunung) Beremban 1600-1800m, 29.VII.1993 R. Schuh lg. CEHI.

The genus Pahangiessa HEISS 1993 , was described to include the only know type species P. bulboscutellata from Malaysia, Cameron Highlands, Gunung Batu Brinchang at 1800m. Pahangiessa schuhi nov.sp. was collected on another mountain and represents the second species of this genus differing in several characters from P. bulboscutellata as follows.

D i a g n o s i s:Closelyrelatedandofthesamesizeas P. bulboscutellata but is easily distinguished by the following set of characters (those of P. bulboscutellata in brackets):

Antennae longer, 1.27x as long as width of head (1.14x); pronotum less transverse, 2.73x as wide as long (3.08x); scutellum with a longitudinal ridge (high round hump); polygonal hemelytral sclerite anterolaterally roundedly expanded, obscuring the reflexed metathoracic scent gland canal from above (anterolateral margin not expanded, straight and carinate, scent gland canal distinctly visible from above); median elevation on tergal plate small (much higher); pilosity on body, antennae and legs short, its length about half the diameter of the tibiae (longer, as long as the diameter).

D e s c r i p t i o n: Male, micropterous; colouration dark brown, surface shiny, body legs and antennae covered with fine setigerous granulation.

H e a d: Much wider than long 27.5 (25) / 25; genae longer than clypeus, diverging anteriorly, their apex rounded, as long as antennal segment I; antenniferous lobes laterally bent and diverging anteriorly, apices blunt; antennae 1.27x as long as width of head (35/27.5), length of segments I/II/III/IV = 8.5/7.5/8.5/3.5, eyes globose, slightly stylate; postocular tubercles acute, reaching outer margin of eyes; rostrum arising from a slit like atrium, rostral groove closed posteriorly.

P r o n o t u m 2.73x as wide as long at middle; lateral margins straight, subparallel, anterolateral angles roundedly expanded and slightly reflexed; collar ring like; disk with 2 (1+1) median granulate oval elevations.

S c u t e l l u m: Subtriangular, about twice as wide as long (25/13); lateral margins carinate, median longitudinal elevation ridge like.

H e m e l y t r a: Of polygonal shape lateral of scutellum; anterolateral lobes expanded and rounded, obscuring the metathoracic scent gland canal from above.

M e t a n o t u m: Visible as small transverse sclerites posterior of the hemelytra which are medially not connected and separated by the scutellum. Tergites I+II fused into a strongly transverse medially carinate sclerite, their fused deltg I+II triangular, reaching to the rounded lateral lobes of the hemelytra.

A b d o m e n:Lateralmarginsoftergalplateconstrictedposteriorly,medianelevation highest between mtg III and IV, then sloping posteriorly; lateral margins of deltg II-VII straight, posteroexterior angles slightly carinate and produced.

G e n i t a l i c s t r u c t u r e s: Pygophore pyriform, paratergite VIII clavate and shorter than pygophore; the single specimen was not dissected.

V e n t e r: Spiracles II-VI ventral and far from lateral margin, VII closer to the margin but not visible from above, VIII terminal and visible from above.

M e a s u r e m e n t s: Length 5.4mm; width of abdomen 2.85.

E t y m o l o g y: Dedicated to my Coleopterist friend Rudolf Schuh (Wiener Neustadt), who collected this and many other interesting Aradidae in several countries, always generously presenting them to me for further studies and for my special collection of flat bugs.

Figures

Fig. 1-8: (1, 2) Pahangiessa bulboscutellata; (3, 4) Pahangiessa schuhi nov.sp.; 1, 3 lateral view; 2, 4 right hind leg.; (5-8) Sikkimocoris rumtek nov.sp., paramere in different positions. Abbreviations: he – highest elevation on tergal plate; lpe – lateral pronotal expansion; mep – median elevation of pronotum; ms – metathoracic scent gland canal; mt – metanotum; mtg 1, 2 – fused mediotergites 1 and 2; mtg 7 – mediotergite 7; pot – postocular tubercle; py – pygophore; sc – scutellar hump or elevation; wp – reflexed lateral margin of wingpad. Scale 1 mm for fig. 1-4; 0.1mm for fig. 5-8.