Sikkimocoris, 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 : 82-83

Sikkimocoris nov.gen.

Type species: Sikkimocoris rumtek nov.sp.

D i a g n o s i s The new genus resembles habitually the micropterous genera of Oriental Mezirinae Bengalaria HEISS 1982 , from Northern India and Nepal and Pahangiessa HEISS 1993 , from Malaysia. Both are however distinguished from Sikkimocoris by their different structures of body, particularly of the scutellum and the development of the reduced alary sclerites and the elevations on the tergal plate.

D e s c r i p t i o n: Micropterous, body of oval outline; surface shiny, smooth areas with distinct punctures; elevated ridges on head, thorax and abdomen are granulate with yellowish curled pilosity which is also present on legs and antennae.

H e a d: Slightly longer than wide across eyes, genae long and thin exceeding apex of clypeus, contiguous in front with acute apex; antenniferous lobes blunt and rounded anteriorly; antennae less than twice as long as width of head, segment I longest and thickest followed by shorter and thinner ones; eyes globose and slightly stylate; postocular lobes straight converging posteriorly, angulate before the collar; vertex longitudinally raised, beset with setigerous granules; rostrum arising from a slit like atrium, rostral groove shorter than head, carinate laterally and closed posteriorly.

P r o n o t u m Transverse, anterior margin with a ring like collar; anterolateral lobes expanded and carinate, sublaterally with 2 (1+1) anteriorly converging carinae; disk with punctured surface and a median depression separated by a transverse groove from straight and elevated posterior margin.

S c u t e l l u m: Subtriangular, lateral margins sinuate and carinate, posterior margin broadly rounded; disk with a high round elevation with setigerous granulation.

H e m e l y t r a: Reduced to small subround sclerites lateral of the scutellum, anterolateral angles carinate and pilose, posteromedially with a granulate elevation.

M e t a n o t u m: Consisting of 2 (1+1) sclerites lateral of the scutellum; lateral margins carinate and pilose, surface punctured; posterior margins sinuate, separated from fused tergites I+ II by a thin suture; reflexed metathoracic scent gland canals visible laterally in front of metanotum.

T e r g i t e s I+ II: consisting of an inner triangular sclerite posterior to the metanotum and a triangular fused laterotergite extending along the lateral margin of metanotum on each side.

A b d o m e n:Tergalplatereaching from scutellum to posterior margin of mediotergite (mtg) VI; anterolateral margins converging to scutellum, lateral margins slightly rounded, posterior margin straight; disk medially elevated on mtg III-V, laterally with oval smooth depressions on mtg III-VI bearing the apodemal impressions (glabrous spots); dorsal external laterotergites (deltg) with carinate slightly produced posterolateral angles, lateral margins pilose; posterolateral lobes of tergite VII angulate.

V e n t e r: Sternites with usual pattern (2:2:1) of apodemal impressions, surface smooth

at middle, punctured laterally; spiracles II-VI ventral, far from lateral margin, VII sublateral but hardly visible from above, VIII terminal.

L e g s: Finely granulate and pilose; preapical comb on fore tibiae present.

E t y m o l o g y: Named after the Indian Province of Sikkim, where the specimens were discovered.