ISSN 1211-8788 Acta Musei Moraviae, Scientiae biologicae (Brno) 98(2): 363–379, 2013

Two new genera and four new species of micropterous Aradidae from Malaysia (Hemiptera: Heteroptera)

ERNST HEISS1 & PETR BAÒAØ2 1 Tiroler Landesmuseum, Josef-Schraffl-Strasse 2a, A-6020 Innsbruck, Austria; e-mail: aradus@aon.at 2 Moravian Museum, Department of Entomology, Hviezdoslavova 29a, Brno, CZ-627 00, Czech Republic; e-mail: [email protected]

HEISS E. & BAÒAØ P. 2013: Two new genera and four new species of micropterous Aradidae from Malaysia (Hemiptera: Heteroptera). In: KMENT P., MALENOVSKÝ I. & KOLIBÁÈ J. (eds.): Studies in Hemiptera in honour of Pavel Lauterer and Jaroslav L. Stehlík. Acta Musei Moraviae, Scientiae biologicae (Brno) 98(2): 363–379. – The following new genera and species of Aradidae (Heteroptera) are described and figured: Carventinae, Langkawiaptera gen.nov. with L. spinosa sp. nov from Langkawi Island in Malaysia; and Mezirinae, Stehlikiessa gen.nov. with S. kmentiana sp.nov. from the Cameron Highlands in West Malaysia, and Smetanacoris parallelus sp.nov. and Smetanacoris lautereri sp.nov. from Sarawak in Borneo. A key to species of Smetanacoris is provided. Keywords. Hemiptera, Heteroptera, Aradidae, Carventinae, Mezirinae, taxonomy, new genera, new species, micropterous, Oriental Region, Malaysia

Introduction Sifting leaf litter or substrate under loose bark in subtropical and tropical forests in the Old World, a collection approach that is gaining in popularity, has led to the detection of a great number of new flat bug taxa (e.g. HEISS 1997, 2001, 2011; HEISS et al. 2012; HEISS & BAÒAØ 2013a, b, c). Most of them are particularly adapted to these nourishment- rich habitats and are represented by both apterous and micropterous forms. Their distribution range, however, is very limited and so endemism is to be expected. From material originating from the Malay peninsula and Sarawak province in Borneo, two new genera and four new species have been recognized and they are described and figured herein. We dedicate our paper to Dr. Jaroslav Stehlík on the occasion of his 90th birthday, in recognition of his friendship and outstanding contributions to our science and to our esteemed colleague Dr. Pavel Lauterer who is celebrating his 80th birthday.

Material and methods The specimens studied were partly borrowed from the Muséum d’histoire naturelle de la Ville de Genève or are from the collection of one of the authors (EH).

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Types are deposited in, or are held by: EHIA ...... Ernst Heiss collection, at Tiroler Landesmuseum, Innsbruck, Austria MHNG ...... Muséum d’histoire naturelle de la Ville de Genève, Geneva, Switzerland MMBC ...... Moravian Museum, Brno, Czech Republic NMPC ...... National Museum, Prague, Czech Republic

The usual incrustation that tends to obscure the body structures of litter-dwelling specimens was removed by soaking them in 10% KOH and rinsing in distilled water. Measurements were taken with a micrometer eyepiece and are given in millimetres. When citing the text on the labels attached on the same pin as the specimens, a forward slash (/) separates the lines of one label, and a double slash (//) separates different labels. The following abbreviations are used in the descriptions: deltg = dorsal external laterotergite (connexivum), mtg = mediotergite, ptg = paratergite, vltg = ventral laterotergite.

Taxonomy Subfamily Carventinae Usinger, 1950 Langkawiaptera gen.nov. Type species: Langkawiaptera spinosa sp.nov., here designated. Description. Apterous, body surface glabrous with pits and elevations and scattered incrustate patches of pilosity; colour dark brown to black, legs, antennae and lateral spines ochraceous yellow, pilosity stramineous, a dull, pale yellow. Head rectangular in outline with projecting clypeus reaching about half of antennal segment I; antenniferous lobes not developed; antennae shorter than width of head, segment I longest and thickest, bent at base, II shortest, III thinner and IV fusiform; eyes directed dorsolaterally with a large preocular tubercle; postocular lobes deeply excavated anteriorly then rounded and converging posteriorly to a constricted neck; rostrum arising from a slit-like atrium, rostral groove deep, closed posteriorly, shorter than head. Pronotum strongly transverse, a median depression separating the ovate, laterally- raised sclerites with an anterolaterally-directed spine at apex; a deep furrow separates the pronotum from mesonotum. Mesonotum consists of a transverse median ridge connecting the laterally-raised sclerites and bears a spine at the apex; posterior margin straight and strongly raised, sloping anteriorly to a deep, transverse furrow. Metanotum fused to mtg I+II forming a trapezoidal sclerite; anterior margin raised with two median and 2 (1+1) lateral, backward-directed projections, disk sloping posteriorly to deep impressions, their rear margins straight, carinate and smooth. Abdomen. Tergal disk with concave surface and deep apodemal impressions; lateral margin with a lateral spine at fused deltg I+II and a lateral tubercle on deltg III–VII; surface of I+II and III–VI carinate midway, deltg II+III not fused; tergite VII medially raised for the reception of the pygophore; spiracles III–VII placed on tubercles visible from above, spiracle VIII on ptg VIII.

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Figs 1–6. 1 – Langkawiaptera spinosa gen. et sp.nov., holotype, male, dorsal (3.75 mm). 2–3 – Stehlikiessa kmentiana gen. et sp.nov., holotype, male. 2 – dorsal view (2.55 mm); 3 – paratype, male, ventral view (2.55 mm). 4 – Smetanacoris apanius Heiss, 1989, paratype, female, dorsal view (2.42 mm). 5 – Smetanacoris parallelus sp. nov, paratype, female, dorsal view (2.5 mm). 6 – Smetanacoris lautereri sp.nov., paratype, female, dorsal view (2.35 mm).

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Venter. Median part of pro-, meso- and metasternum smooth, sternites separated by deep, transverse furrows with the usual pattern of apodemal impressions. Legs unarmed, femora slightly incrassate, tibiae straight, claws with pulvilli. Etymology. Named after the Malaysian Island of Langkawi and the species’ apterous condition. Gender feminine. Differential diagnosis. The new genus is easily recognized and distinguished from all other apterous Carventinae recorded to date from Malay Peninsula and adjacent islands e.g.: Apteraradus Drake, 1957, Kiritshenkiana Kormilev, 1976, Morphocoris Kormilev, 1980, Cameronaptera Heiss, 2010a and Tiomanaptera Heiss, 2010b by body structure with prominent lateral spines on pro- and mesonotum and deltg I+II, head wide with short antennae and patches of velvet-like yellow pilosity on its surface. Included species. To date, the genus is monotypic, including only Langkawiaptera spinosa sp.nov. from Malaysia.

Langkawiaptera spinosa sp.nov. (Figs 1, 7–9) Type material. Holotype: male, labelled: ‘West Malaysia / Kedah, Pulau Langkawi / Gunung Raya, 700-800m / (6°23′N, 99°48′E) / 31 VIII 2004, leg. A. Schultz’ // ‘Holotype / Langkawiaptera gen.nov. / spinosa sp.nov. / des. E. Heiss & P. Baòaø 2013’ (MHNG). Description. Only an apterous male known. Surface of body glabrous with deep depressions and elevations, partly covered by patches of velvet-like incrustate pilosity (Figs 1, 7), colour dark brown to black, legs and antennae yellowish (Fig. 1). Head (Fig. 8) wider than long (0.9/0.8 mm); clypeus produced anteriorly with a dorsally-directed tubercle at apex, flanked by thin genae that diverge apically but are shorter than the clypeus and extend ventrally, leaving a median cleft for the ventrally- produced clypeus; antenniferous lobes not developed; antennae shorter than width of head (0.8/0.78 mm), segment I longest and thickest, bent at base, II shortest, III thinnest, IV fusiform with pilose apex; lengths of antennal segments I/II/III/IV = 0.25/0.15/0.19/0.20 mm; eyes granulate slightly stalked and directed dorso-laterally; large preocular tubercle present; postocular lobes excavated before eyes then rounded and produced laterally to outer level of eyes, converging posteriorly to a constricted neck; vertex carinate midway, flanked by 2 (1+1) ovate callosities at a lower level. Pronotum more than twice as wide as long (1.2/0.45 mm) with tufts of pilosity; collar ring-like, followed by a deep transverse depression at the rear that joins the transverse groove along the posterior margin; lateral sclerites raised toward lateral margin bearing a distinct spine on apex, anterolateral angles slightly produced over collar. Mesonotum five times as wide as long (1.5/0.3 mm); lateral sclerites raised with a distinct apical spine, medially connected by a ridge, lateral margins rounded; posterior margin straight and elevated, disk sloping anteriorly, then deeply depressed. Metanotum fused to mtg I+II, anterior margin highest with 2 median and 2 (1+1) lateral projections, surface sloping posteriorly with deep impressions before smooth, raised posterior margin.

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Figs 7–9. Langkawiaptera spinosa gen. et sp.nov., holotype, male. 7 – dorsal view; 8 – head, dorsal view; 9 – tergal plate.

Abdomen (Fig. 9). Surface of tergal disk concave with distinct apodemal impressions; deltg I+II fused and triangular with a lateral spine antero- and posterolaterally; deltg I+II not fused to deltg III; lateral margin of deltg III–VII with a laterally-produced tubercle, surface with a longitudinal pilose carina; spiracles III–VII placed on a tubercle and visible from above, spiracles VIII on ptg VIII, pygophore conical, very wide, almost spherical from dorsal view, ptg VIII shorter than pygophore, apex rounded. Venter. Prosternum elevated midway with a deep pit; meso- and metasternum and following sternites II–VI smooth and lustrous at centre, lateral parts covered in velvet- like pilosity; sternites III–VII separated by transverse sutures; sternite VII with a median triangular elevation, matt, laterally with 2 (1+1) oval and velvet depressions. Legs unarmed, spine-like preapical bristles present on forelegs; femora moderately incrassate, tibiae cylindrical, tarsi 2-segmented with thin pulvilli. Measurements. Body length 3.75 mm (including the produced pygophore); antenna length 0.78 mm; ratio antenna length / head width = 0.87; abdomen width 1.85 mm. Differential diagnosis. The only species of this genus, it is easily recognized and distinguished from other apterous Carventinae by the characters provided in the generic description.

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Etymology. Named after the conspicuous lateral spines of the thorax; spinosus, -a, -um is a Latin adjective meaning spinose. Distribution. Endemic to Langkawi Island near the west coast of Malaysian Peninsula and not recorded elsewhere to date.

Subfamily Mezirinae Oshanin, 1908 Stehlikiessa gen.nov. Type species: Stehlikiessa kmentiana sp.nov., here designated. Description. Micropterous, small (2.5–2.9 mm); body stout with subparallel lateral margins, attenuated anteriorly; surface flat and submatt, pronotum with 4 (2+2) carinae. Head about as long as wide; clypeus short, reaching one-third length of antennal segment I; antenniferous lobes shorter than clypeus, apex acute; antennae about twice as long as width of head, segment I thickest, II shortest, III longest, IV with pilose apex, eyes inserted in head; postocular lobes granulate, converging posteriorly; rostrum arising from a slit-like atrium, as long as head, rostral groove open at the rear. Pronotum trapezoidal, lateral margins carinate converging forwards in angular fashion; sublateral raised carinae converging forwards in rounded fashion, joining raised anterior margin; disk sloping posteriad; larger tubercles are visible along lateral margin at a lower level. Mesonotum. Scutellum distinct, its surface flat; lateral wing pads with a longitudinal carina; canal of metathoracic scent gland visible from above, anterolateral to wing pads. Metanotum fused to mtg I+II, the fusion suture interrupted midway; surface smooth, posterior margin straight. Abdomen. Tergal plate flat with a carinate elevation medially on mtg V, apodemal impressions distinct; triangular fused deltg I+II with a longitudinal carina, not fused to deltg III, deltg III–VII separated by sutures, surface flat, lateral margins of deltg partly carinate, III, VI and VII in male and III–VII in female. Venter. Pro-, meso- and metasternum fused to sternites II+III, flattened at centre; sternites III–VII separated by deep furrows, surface smooth; metathoracic scent gland evaporatorium large, directed upwards, curved and raised with a slit-like ostiole. Legs unarmed, femora incrassate, tibiae cylindrical, preapical spine present, claws with thin pulvilli. Etymology. This interesting new genus is dedicated to our friend and mentor Jaroslav L. Stehlik from the Moravian Museum in Brno, an eminent scholar of the Pyrrhocoroidea. The gender is feminine. Differential diagnosis. The micropterous Mezirinae recorded to date from Malaysia belong to the genera Mastigocoris Matsuda et Usinger, 1957 (M. malayenis Kormilev, 1967 and M. truncatus Kormilev et Heiss, 1977), Kiritshenkiessa Kormilev, 1971 (K. spinipes Kormilev, 1971); to Hutanicoris Heiss, 1993 (H. carinatus Heiss, 1993); and to Pahangiessa Heiss, 1993 (P. bulboscutellata Heiss, 1993). Closest related to the species

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Figs 10–15. Stehlikiessa kmentiana gen. et sp.nov., paratype, male. 10 – dorsal view; 11 – ventral view; 12 – head, dorsal view; 13 – head, ventral view; 14 – thorax, dorsal view; 15 – thorax, ventral view.

Acta Musei Moraviae, Sci. biol. (Brno), 98(2), 2013 369 E. HEISS & P. BAÒAØ in hand appears to be Hutanicoris, sharing with the new genus its habitus and structure of pronotum but differing in the raised, not flat, scutellum with carinate lateral margins and in the ridge-like elevations marking the metanotum, lacking in Stehlikiessa gen.nov. Pahangiessa is larger (5.3–6.1 mm) and has a long clypeus, subrectangular head and a bulbously elevated scutellum; the micropterous form of Mastigocoris (macropterous morphs may occur in one population) lacks the carinate pronotum and has a triangular carinate scutellum, although it is of similar size and habitus, Kiritshenkiessa spinipes differs in its carinate scutellum and larger median elevation on the tergal plate and is also not considered for biogeographical reasons, since it is endemic to forests in south-west India. Included species. The genus is, at the moment, monotypic, including only Stehlikiessa kmentiana sp.nov. from Malaysia.

Stehlikiessa kmentiana sp.nov. (Figs 10–15) Type material. Holotype: male, labelled: ‘Malaysia. Pahang / Cameron Highlands / Gn. Beremban 1600-1800 m / 29.7.1993 leg. Schuh’ // ‘Holotype / Stehlikiessa gen.nov. / kmentiana sp.nov. / des. E.Heiss & P. Baòaø 2013’ (EHIA). Paratypes: 6 males, 1 female collected with holotype (EHIA, MMBC, NMPC); 2 males: ‘W Malaysia: Pahang / Cameron Highlands / trail 9, 1400m, 27.3.93 / Löbl & Calame, #21’ (MHNG); 1 male, 1 female: ‘AS-04/14 7 West Malaysia: Pahang, Frazer’s Hill / 2km south of town, 1200m / (3°41′N, 101°45′ E) / 28.VIII.2004, leg. A. Schultz / AS-04/12’ (MHNG); 1 male: ‘Malaysia. Pahang / Fraser’s Hill / 25 XI 1983 Heiss’ (EHIA). Description. Micropterous male (Figs 10–11), colour uniformly reddish-brown (Figs 2–3). Head (Figs 12–13) slightly wider than long (0.50/0.45 mm); clypeus elevated with a smooth, round subapical tubercle; antenniferous lobes shorter than clypeus, diverging anterolaterally with subacute apex; antennae 1.95 times as long as width of head, surface granulate, segment I thickest, constricted at base, II thinner and shortest, III longest, IV conical with pilose, truncate apex; length of antennal segments I/II/III/IV = 0.27/0.13/0.30/0.27 mm; eyes granulate, inserted in head; postocular lobes short and granulate, converging rearwards to constricted neck; vertex granulate at centre, flanked laterally by 2 (1+1) oval callosities; rostrum as long as head, arising from a slit-like atrium, rostral groove deep with carinate lateral margins, open posteriorly. Pronotum (Fig. 14) strongly transverse (1.1/0.35 mm); lateral carinate margins subparallel on posterior half then converging forwards in angular fashion, acute anterolateral angles produced over ring-like, medially-raised collar; 2(1+1) sublateral ridges curved anteriorly, there reaching the median elevation of collar; disk between these sublateral ridges concave and sloping to sinuate posterior margin with a central longitudinal groove; a few larger tubercles on a lower level of the lateral face of pronotum are visible from above. Mesonotum (Fig. 14). Scutellum flat at centre, anterolaterally acute angles slightly raised, posterior margin straight; lateral wing pads distinct, surface with a longitudinal carina; canal of metathoracic scent gland visible from above at anterolateral angle of wing pads.

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Metanotum fused to mtg I+II (Fig. 14), surface smooth at centre, rugose laterally; fusion line marked by a thin suture interrupted midway; posterior margin straight. Abdomen. Tergal plate slightly concave with feeble apodemal impressions, a moderately median elevation is developed on mtg V; lateral margins seemingly doubled by reflexed vltg II–VII, which are visible from above as a small rim increasing in size from deltg II to VII; triangular deltg I+II fused, separated from deltg III by a suture, surface with a longitudinal ridge that continues on deltg III but is shorter and lower; surface of deltg III–VII flat, posterolateral margins of deltg VI and VII roundly elevated; tergite VII medially raised with a transverse granulate ridge; pygophore elongate, dorsal surface transversely rugose; paratergites VIII knob-like, reaching half of pygophore length. Venter. Prosternum anteriorly with 2 transverse carinae, then shallowly depressed and separated from mesosternum by a thin suture; meso- and metasternum flat at centre (Fig. 15), fused to sternites II+III (Fig. 11), the following sternites separated by transverse grooves; spiracles III–VI ventral on tubercles that form a “V” viewed from above, VII lateral and visible, VIII terminal on ptg VIII. Legs unarmed, beset with setigerous granulation; femora incrassate on apical half, trochanters distinct, tibiae straight with preapical spine on foreleg, claws with pulvilli. Female. Generally as male but of larger size; longitudinal ridges of deltg I+II continue along the outer margin of deltg III–VII, tergite VII truncate towards the rear, paratergites VIII reduced to 2 round, rearwards-produced tubercles bearing spiracles. Measurements. Holotype male: Body length 2.55 mm, antenna length 0.97 mm, abdomen width 1.25 mm. Paratype female: body length 2.9 mm, antenna length 1.1 mm, head width/length 0.55/0.52 mm, pronotum width/length 1.25/0.45 mm, abdomen width 1.5 mm; variation of body length in paratypes: males 2.50–2.60 mm, females 2.85–2.90 mm. Differential diagnosis. As this is to date the only species of this genus, it may clearly be recognized by the characters provided in the generic diagnosis and description. Etymology. It is our great pleasure to dedicate this new taxon to our friend Petr Kment (National Museum, Prague) in recognition of his important contributions to taxonomy and the faunistics of the Heteroptera, and of his successful engagement as editor of Acta Entomologica Musei Nationalis Pragae. The species name is designed as an adjective, kmentianus, -a, -um. Distribution. Recorded only from Cameron Highlands and adjacent Fraser’s Hill in Pahang Province, mainland Western Malaysia.

Smetanacoris Heiss, 1989 Smetanacoris Heiss, 1989: 2–5 (original description). Type species: S. apanius Heiss, 1989, by original designation. Notes. The micropterous Mezirinae genus Smetanacoris was erected for the species S. apanius Heiss, 1989 and S. sabahnus Heiss, 1989, both from the Malaysian province of Sabah in Borneo. Their most conspicuous character is the large, even dorsally expanded

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Figs 16–18. Smetanacoris parallelus sp.nov., holotype, male. 16 – total dorsal view; 17 – head, dorsal view; 18 – tergal plate.

evaporatorium of the metathoracic scent gland (HEISS 1989). Here we describe two additional new species from the Malaysian state of Sarawak, also in Borneo which also share this enlarged and extended evaporatorial surface. It is assumed to be an adaptation to the leaf-litter habitat, where it might be difficult to attract the opposite sex with gland secretions, or it may have a defence function that is facilitated by an increased evaporation surface. The two new species, S. parallelus sp.nov. and S. lautereri sp.nov. share a similar shape of the evaporatoria with laterally extended anterior part (Figs 24–26). The occurrence of clearly-distinguishable species from different localities of Sabah and Sarawak (Malayan part of Borneo) and the limited distribution range of flightless flat bugs indicate long, isolated evolutionary development resulting in endemic taxa.

Key to species of Smetanacoris Heiss, 1989 1(2) Evaporatorium of metathoracic scent gland developed posterolaterally to scent gland canal, its dorsal lobe short (Figs 21–23); scutellum with granulate elevation posteriorly (Figs 27–28)...... 3

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Figs 19–20. Smetanacoris lautereri sp.nov., holotype, male. 19 – total dorsal view; 20 – abdomen, dorsal view.

2(1) Evaporatorium of metathoracic scent gland developed postero- and dorsolaterally to canal of scent gland, the dorsal lobe elongate and extending anterolaterally above the canal of the scent gland (Figs 24–26); scutellum with a narrow, apically-elevated ridge (Figs 29–30)...... 5 3(4) Median, backward-sloping depression between raised metanotal ridges smooth (Figs 4, 27)...... S. apanius Heiss, 1989 4(3) Median, backward-sloping depression between raised metanotal ridges with a median longitudinal carina and ovate depressions laterally (Fig. 28)...... S. sabahnus Heiss, 1989 5(6) Median, backward-sloping depression between raised metanotal ridges flat and smooth (Fig. 30); pronotum depressed at centre, delimited anteriorly by 2 (1+1) tubercles; outline of evaporatorium as in Figs 25–26; colour brown (Fig. 6)...... S. lautereri sp.nov. 6(5) Median, backward-sloping depression between raised metanotal ridges with a median longitudinal carina, the lateral depressions with transverse carinae and pits (Fig. 29); pronotum medially with a flat

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Figs 21–26. Smetanacoris species, evaporatorium of metathoracic scent gland, lateral view. 21–22 – S. apanius Heiss, 1989; 21 – holotype, male; 22 – paratype, female. 23 – S. sabahnus Heiss, 1989, holotype, male. 24 – S. parallelus sp.nov., holotype, male. 25–26 – S. lautereri sp.nov.; 25 – holotype, male; 26 – paratype, female. Scale bar 0.5 mm. Abbreviations (used in Figs 21 and 24): lm – lateral margin of mesonotum; mse – metathoracic scent gland evaporatorium; pr – lateral edge of pronotum; sgc – scent gland canal.

elevation, anterolaterally delimited by 2 (1+1) granulate ridges; outline of evaporatorium as in Fig. 24; colour blackish (Fig. 5)...... S. parallelus sp.nov.

Smetanacoris parallelus sp.nov. (Figs 5, 16–18, 24, 29) Material examined. Holotype: male, labelled: ‘E.Malaysia: Sarawak / confl. Suan Oyan and / Mujong riv. E Kapit / 150m, 19.V.1994 #6a / Löbl & Burckhardt’ // ‘Holotype / Smetanacoris / parallelus sp.nov. / des. E.Heiss & P. Baòaø 2013’(MHNG). Paratype: female, collected with holotype (EHIA). Description. Micropterous male, body subparallel (Figs 5, 16), surface with rugosities and carinae, dorsally visible evaporatoria elongate; colour blackish-brown. Head (Fig. 17) slightly wider than long (0.45/0.43); clypeus short with rounded apex and a shiny dorsal tubercle at centre; antenniferous lobes short and blunt with a dorsal

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Figs 27–30. Smetanacoris species, dorsal outline of scutellum and metanotum fused to mtgI+II, dorsal view. 27 – S. apanius Heiss, 1989; 28 – S. sabahnus Heiss, 1989; 29 – S. parallelus sp.nov.; 30 – S. lautereri sp.nov. Scale bar 0.5mm. Abbreviations: de – depression of mtg I+II; fa – flat sclerite of mtg I+II; gr – granulate elevation; mc – median carina; me – metanotal ridge; rs – ridge of scutellum; sc – scutellum; ts – transverse carinae.

tubercle; antennae 1.91 times as long as width of head, surface with setigerous granulation, segment I thickest, II shortest, III longest, IV with truncate, pilose apex; length of antennal segments I/II/III/IV = 0.22/0.12/0.27/0.24 mm; eyes inserted in head; postocular lobes angularly produced, then converging evenly to a narrow neck; vertex rugose; rostrum as long as head, arising from a slit-like atrium, rostral groove open posteriorly. Pronotum about twice as wide as long (0.75/0.4 mm); anterior margin raised midway with 2 (1+1) short, granulate ridges produced at the rear, followed at centre by lower subtriangular elevation; lateral sclerites elevated and granulate, separated from larger humeral tubercles and transverse carina of posterior margin by a sinuate groove.

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Mesonotum. Scutellum (Figs 16, 29) distinct, depressed at base, elevated posteriad, narrow median ridge highest at the rear, surface lateral to keel smooth, sloping to carinate lateral margins, anterolateral angles triangularly elevated; wing pads longer than scutellum with a median longitudinal ridge which is highest at the rear, laterally partly concealed by the elongate lobes of the evaporatorium of the metathoracic scent gland which is dorsally reflexed and visible from above; opening of metathoracic scent gland canal also visible in the middle of this evaporatorium (Fig. 16). Metanotum fused to mtg I+II forming 2 (1+1) inclined high lateral ridges, median depression between them with a carina at centre (Fig. 29), lateral parts with transverse carinae and pits, posterior margin nearly straight and carinate. Abdomen. Tergal plate (Fig. 18) rugose with deep impressions lateral of median ridge which is highest on mtg III; triangular fused deltg I+II separated from deltg III; surface of deltg III–VII raised with a median carina highest on deltg II and III with a posterolateral tubercle; tergite VII raised at centre with a knob-like apical tubercle, pygophore elongate with rugose surface, ptg VIII short and rounded. Venter. Pro-, meso- and metasternum and sternites II+III fused, prosternum elevated with an oval depression, meso- and metasternum flattened medially; evaporatorium of metathoracic scent gland large and trilobate (Fig. 24), extending posterolaterally and dorsally; spiracles III–VI ventral, VII lateral and visible from above, spiracle VIII terminal on ptg VIII. Legs unarmed, fore tibiae with a preapical spine-like comb, femora moderately incrassate midway, claws with pulvilli. Female. Generally as male, surface of deltg III–VII with 2 tubercles along inner margin and another one on posterolateral angle; tergite VII depressed at centre, raised to a transverse ridge posteriorly; ptg VIII consisting of two round tubercles connected by a thin, bridge-like sclerite, bearing spiracles at apex. Measurements. Holotype, male: body length 2.4 mm, antenna length 0.86 mm, abdomen width 0.95 mm. Paratype, female: body length 2.5 mm, antenna length 0.91 mm, ratio antenna length/head width = 2.02, head width/length 0.45/0.43 mm, pronotum width/length 0.85/0.40 mm, abdomen width 1.05 mm. Etymology. The species epithet is the Latin adjective parallelus, -a, -um, meaning parallel. The name refers to the subparallel body of this species. Differential diagnosis. Smetanacoris parallelus sp.nov. may be distinguished from S. apanius and S. sabahnus by its long evaporatorium with the dorsal lobe elongate and extending anterolaterally (short, not extending anterolaterally in S. apanius and S. sabahnus) and scutellum with a narrow, apically-elevated ridge (scutellum with a granulate elevation at the rear in S. apanius and S. sabahnus); from S. lautereri sp.nov. by median longitudinal carina on metanotum (metanotum flat in S. lautereri sp.nov.); by flat elevation on pronotum (pronotum with two tubercles in S. lautereri sp.nov.) and by shape of evaporatorium (see also Key). Distribution. Recorded to date only from central part of Sarawak, Kapit area.

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Smetanacoris lautereri sp.nov. (Figs 6, 19–20, 25–26, 30) Material examined. Holotype: male, labelled: ‘E. Malaysia: Sarawak / Gn. Matang, 20km W Kuching, 600m, 25 V 1994 / mix Dipterocarp forest / Löbl & Burckhardt # 11a’ // ‘Holotype / Smetanacoris / lautereri sp.nov. / des. E.Heiss & P. Baòaø 2013’ (MHNG). Paratype: female, ‘AS-EM 07/4 E.Malaysia / Sarawak, Gunung Gading / National Park near Lundu / primary forest, 600-800m / 01°42′50″N, 109°50′09″ E / 28 V 2007, leg.A.Schultz / AS-EM 07/4’ (EHIA). Description. Micropterous male (Figs 6, 19), colour uniformly brown (Fig. 6), surface submatt. As the basic structures are shared with S. parallelus sp.nov., the following description is abbreviated and refers primarily to differences between them to avoid or reduce unnecessary reiteration. Head slightly wider than long (0.47/0.43 mm); antenna 1.81 times as long as width of head, length of antennal segments I/II/III/IV = 0.20/0.11/0.27/0.27; other structures of head as in S. parallelus sp.nov. Pronotum twice as wide as long (0.75/0.35 mm); ring-like collar raised medially with 2 (1+1) round tubercles, depressed posteriad and sloping to convex transverse carina of posterior margin; lateral sclerites and humeral angles raised as in S. parallelus sp.nov. Mesonotum. Scutellum (Fig. 30) more than twice as wide as long, anterolateral angles triangularly elevated, disk raised to carinate posterior margin with a median ridge highest on posterior apex, lateral surface smooth; wing pads with a high longitudinal ridge which is lower midway; elongate lobes of metathoracic scent gland evaporatoria (Figs 25–26) partly covering lateral parts of wing pads. Metanotum with crescent-shaped ridges separated by a deep depression widening posteriad, its surface slightly concave and smooth. Abdomen. Surface of tergal plate smooth with a median elevation on mtg IV–VI and shallow lateral apodemal impressions; structure of deltg II–VII as in S. parallelus sp.nov., surface less rugose. Female. Generally as male in all essential structures. Measurements. Holotype, male: body length 2.4 mm, antenna length 0.86 mm, abdomen width 1.05 mm. Paratype, female: body length 2.35 mm, antenna length 0.8 mm, ratio antenna length / head width = 1.68, head width / length 0.23 / 0.24 mm, pronotum width / length 0.77 / 0.18 mm, abdomen width 1.1 mm. Etymology. Smetanacoris lautereri sp.nov. is dedicated to our colleague and friend Pavel Lauterer, a scholar of the Psylloidea and Auchenorrhyncha, on the occasion of his 80th birthday this year. Differential diagnosis. Smetanacoris lautereri sp.nov. can be distinguished from S. apanius and S. sabahnus by its long evaporatorium, dorsal lobe elongate and extending anterolaterally (short, not extending anterolaterally in S. apanius and S. sabahnus) and scutellum with a narrow, apically elevated ridge (scutellum with a granulate elevation at the rear in S. apanius and S. sabahnus). The new species differs from S. parallelus sp.nov. in its flat metanotum (median longitudinal carina on metanotum in S. parallelus sp.nov.); in two tubercles on pronotum (pronotum with flat elevation in S. parallelus sp.nov.) and in the shape of the evaporatorium (see also the Key). Distribution. This species is known only from east Sarawak.

Acta Musei Moraviae, Sci. biol. (Brno), 98(2), 2013 377 E. HEISS & P. BAÒAØ

Acknowledgements The authors are grateful to Peter Schwendinger (Muséum d’histoire naturelle de la Ville de Genève) for the loan of interesting flat bug material and to Petr Kment (National Museum, Prague) and Lorène Marchal (Muséum national d’Histoire naturelle, Paris) for critical comments on the manuscript. We also thank Stefan Heim for taking the colour photographs. This paper appears through financial support provided to the Moravian Museum by the Ministry of Culture of the Czech Republic as part of its long-term conceptual development programme for research institutions (ref. MK000094862) and a grant of the Faculty of Science of Charles University in Prague (SVV-2013-267 201). Ernst Heiss would also like to express his particular thanks to his friend Rudolf Schuh (Wiener Neustadt) who collected new and rare Aradidae several times and donated them generously to his special aradid collection. Petr Baòaø would like also express his thanks to Peter Schwendinger, John A. Hollier and Ivan Löbl for their hospitality and help during his visit to Geneva.

References

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