New Aradidae from Ecuador (Hemiptera, Heteroptera, Aradidae)

Abstract As an addition to the presently poorly known aradid fauna of Ecuador, 3 new genera and 4 new species are described: Osellaptera setifera gen. n., sp. n.; Kormilevia ecuadoriana sp. n. both belonging to Mezirinae; and Carventinae Cotopaxicoris cruciatus gen. n., sp. n. and Onorecoris piceus gen. n., sp. n. An updated key is provided for all species of the Neotropical genus Kormilevia Usinger & Matsuda, 1959.


Introduction
The aradid fauna of Ecuador was first assembled and catalogued by Froeschner 1981 reporting 15 species, belonging to the subfamilies Aneurinae Douglas & Scott, 1865 (2 spp.) and Mezirinae Oshanin 1908 (13 spp.). This reflects very poorly on the known flat bug fauna of this country, which is expected much more diverse and numerous because of its different biotops and suitable habitats. Later additions were recorded in Kormilev and Froeschner's synonymic list of the "Flat Bugs of the World" in 1987 and again updated by Coscaron and Contreras in their "Catalog of Aradidae for the Neotropical Region" in 2012.
A small lot of Aradidae from Central Ecuador in the authors collection contained -not unexpectedly -several new taxa. Although only single specimens are available, their striking morphological differences from other Neotropical Aradidae justify the erection of new genera for them. They are illustrated and described below as Osellaptera setifera gen. n., sp. n.; Kormilevia ecuadoriana sp. n. both belonging to the subfamily Mezirinae; and Cotopaxicoris cruciatus gen. n., sp. n. and Onorecoris piceus gen. n., sp. n. of the subfamily Carventinae. An updated key is proposed for all species of the Neotropical genus Kormilevia Usinger & Matsuda, 1959.

Material and methods
The specimens upon which the descriptions are based are dry-mounted and preserved in the collection of the author at the Tiroler Landesmuseum, Innsbruck, Austria (CEHI). As specimens of these apterous and pilose new taxa were mostly covered by detritus or incrustations, they were cleaned by treatment in 10% KOH for the study of abdominal structures. Photos were taken with an Olympus SZX 10 binocular microscope and a Olympus E 3 digital camera, processed with Helicon Focus 4.3 software, using Adobe Photoshop and Lightroom 2.3.
Diagnosis. Although superficially resembling the habitus of Mystilocoris pubescens Usinger & Matsuda, 1959 from Colombia, the new species cannot be placed in any of the apterous or micropterous Neotropical Mezirinae genera; here therefore Osellaptera gen. n. is proposed. It is distinguished from Mystilocoris pubescens (the only species of this genus) by its micropterous condition (apterous im Mystilocoris), more slender antennae, head as long as wide (about 1.5× wider in Mystilocoris), different structure and fusion of thorax and abdomen, and position of spiracles II-IV ventral, V sublateral and hardly visible from above, VI and VI sublateral on a prominent tubercle and vis-ible, VIII lateral (II-VI ventral, VII sublateral and visible, VIII lateral), and the shape of the pygophore.
Description. Small sized micropterous Mezirinae; body oval, laterally constricted at metanotum, attenuated posteriorly, surface of body with deep punctures and long pubescence on carinate structures; legs and antennae beset with long setae; colouration cinnamoneous, legs and antennae are lighter.
Head. Triangular as wide as long, clypeus narrow reaching ½ of antennal segment I; antenniferous lobes short; antennae slender twice as long as width of head, segment I longest, II+III shorter, IV shortest; eyes stalked; postocular lobes converging to constricted neck.
Pronotum. Distinctly wider than long, lateral margins converging anteriorly with a vertically reflexed triangular expansion, disk with 2 ovate callosities depressed between them.
Mesonotum. Strongly transverse, median elevated ridge fused to that of metanotum and mtg I+II; lateral sclerites callous delimited laterally by flap-like structures these regarded as reduced remnants of wingpads.
Metanotum. Fused to mtg I+II, lateral sclerites oval and callous; surface of mtg I+II punctured delimited posteriorly by carinae expanding laterally from median ridge.
Abdomen. The median ridge of thorax continues along the tergal plate of mtg III-VI and highest on mtg IV; lateral sclerites with subrectangular punctured depressions; deltg II+III fused, anteriorly constricted, reaching mesonotum; lateral margins of deltg II-VI reflexed, those of deltg II-IV laterally expanded and pilose.
Venter. Metathoracic scent gland canal curved anteriorly and upward, not visible from above; spiracles II-IV ventral, V sublateral and barely visible from above, VI and VII sublateral on a prominent tubercle and fairly visible, VIII lateral and visible from above.
Legs. Long and slender, claws with thin pulvilli. Etymology. It is a pleasure to dedicate this conspicuous new flat bug genus to my friend Giuseppe Osella (Verona), appreciating his long time friendship and generosity donating to me Aradidae from his collection trips, and recognizing his important contributions to various matters of coleopterology.
Description. Holotype male, micropterous body surface deeply punctured interrupted with smooth carinae bearing dense pilosity; colouration cinnamomeous, appendages lighter with long dense erect setae curved on apices.
Head. As wide as long (26/26); pilose clypeus produced and narrowly rounded anteriorly reaching 1/3 of antennal segment I; genae thin and adherent as long as clypeus; antenniferous lobes short, apex recurved apically; antennae twice as long as width of head (52/26), segment I club-shaped and longest, II and III shorter and cylindrical thickened apically, IV shortest, clavate with pilose apex; length of antennal segments I/ II/III/IV = 18/12/14/8; eyes stalked directed anterolaterally; postocular lobes sinuately converging to constricted neck; vertex with a median elevation laterally separated from smooth oval callosities by deep grooves; rostrum arising from a slit-like atrium, shorter than head, rostral groove with carinate borders.
Pronotum. About 2.8× as wide as long (31/11); lateral margins converging anteriorly with a vertically reflexed triangular expansion, disk with 2 ovate callosities deeply depressed between them, anterolateral angles slightly produced and rounded; anterior margin concave, ring like; posterior margin convex.
Mesonotum. Strongly transverse, 3.35× as wide across wingpads as long, consisting of a median ridge fused to that of metanotum and mtg I+II and of lateral oval callosities delimited by an inclined pilose carina followed by flap-like wingpads produced over lateral margins of abdomen.
Metanotum. Fused to mtg I+II these visible as transverse punctured depressions, posteriorly delimited by curved pilose carinae which are connected to median ridge, lateral sclerites of metanotum punctured and callous, posteriorly sloping to mtg I without a separating suture.
Abdomen. Tergal plate of mtg III-VI medially elevated and connected anteriorly to thoracic ridge, highest on mtg IV, lateral sclerites with subrectangular punctured depressions; triangular deltg II+III fused, produced and constricted anteriorly, reaching lateral margin of mesonotum; deltg II-IV laterally expanded, their pe-angles produced and beset with long setae; tergite VII with 2 (1+1) sublateral smooth callosities, strongly medially raised for the reception of the large pygophore, this pyriform projecting posteriorly; paratergites VIII small, much shorter than pygophore, surface with short yellowish pilosity; the cleft visible between tergite VII and anterior margin of pygophore shows triangular apices of parameres; the single male was not dissected for furtherstudy of the latter.
Venter. Metathoracic scent gland canal curved anteriorly and upward, not visible from above; spiracles II-IV ventral, V sublateral and barely visible from above, VI and VII sublateral on a prominent tubercle and fairly visible, VIII lateral and visible from above.
Etymology. The name refers to the dense setae covering legs and antennae and most body parts.

Genus Kormilevia Usinger & Matsuda 1959
http://species-id.net/wiki/Kormilevia Usinger & Matsuda, 1959 was erected for setifera Usinger & Matsuda, 1959 from Brazil. These authors recognized that species described as Acaricoris dureti Kormilev, 1953a from Argentina, or as Pictinus plaumanni Kormilev, 1953b and Pictinus montrouzieri Kormilev, 1953b, both from Brazil, belong to Kormilevia and were transferred there giving a key to the 4 then known species. They were however uncertain about the taxonomic position of Acaricoris teresopolitanus Wygodzinsky, 1948 and did not include this in the key. Kormilev 1963 described the next species aberrans sp. n. from Colombia and 1964 gerali sp. n. from Brazil, and presents a key to 6 species including teresopolitana but omitting his aberrans.

Remarks. The micropterous genus Kormilevia
As the comparative notes of Kormilev's descriptions are partly insufficient, the important structures of the mesonotum are not described or illustrated (e.g., aberrans, gerali) and the position of spiracles used in Kormilev's 1964 key are contradictory to the descriptions (plaumanni, montrouzieri), a comparison of taxa is uncertain and needs a revision based on the types. Here all available data from the literature were assembled and a tentative new key for all 8 taxa is presented below. For plaumanni and montrouzieri original material was available for study (ex. coll. Plaumann).
All Kormilevia species are micropterous, although not always recognized as such, sharing small nonfunctional wingpads that enable only a very limited range of dis-tribution. It can be assumed that they are therefore endemic to the region of origin. Because of biogeographical considerations -the closest record to the Ecuadorian locality is that of aberrans from Bogota, Colombia, which lies about 800km north -and distinct characters, Kormilevia ecuatoriana sp. n. is described here although only a single female is available.

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Spiracles II-VI ventral, remote from lateral margin, VII+VIII lateral and visible from above; only female holotype known (described as Acaricoris), 4.8mm, Fig. 7 Kormilev and Froeschner 1987 and can be recognized by the long antennae and other characters mentioned in the key.
Description. Small sized micropterous Mezirinae; body oval, abdomen dilated posteriorly, surface of body granulate and rugose, lateral margins with short setae; antennae and legs beset with fine setigerous tubercles. Colouration of body reddish brown, pronotum except oval callosities, smooth part of scutellum, apodemal impressions of tergal plate and anterolateral angles of deltg II-VII and apices of tergites VII-X yellowish; antennae yellowish, apical half of segment I, apex of II and III and basal half of IV darker brown, legs yellowish, femora and tibiae brown on apical half.
Head. Slightly longer than width across eyes (20/17.5); clypeus conical; genae thin and adherent, as long as clypeus, reaching about 1/3 of antennal segment I; antenniferous lobes short with acute apex; antennae 2.62× as long as width of head (46/17.5), segment I thickest, II and IV thinner and shortest, dilated apically, III thinnest and longest, cylindrical, IV with pilose apex; length of antennal segments I/II/III/IV = 13/8/17/8; eyes granular inserted in head, their length shorter than antenniferous lobes (9/10); postocular lobes notched behind eyes followed by a round lateral tubercle not reaching outer margin of eyes, then straight, converging to constricted collar; vertex with irregular rugosities separated laterally by a deep groove from oval callosities; rostrum arising from a slit-like atrium, shorter than head.
Mesonotum. Consisting of a triangular scutellum-like plate with smooth surface and anterior and lateral margins carinate and a median granulate carina, anterolaterally delimited by small rounded wing pads, lateral polygonal sclerites with a median oval granulate callosity; metathoracic scent gland visible from above posterior to wing pads.
Abdomen. Tergal plate flat, consisting of mediotergites III-VI laterally with large oval depressions, medially elevated on tergites IV and V; deltg II-VII slightly reflexed, their lateral margin subparallel at middle attenuated anteriorly and posteriorly, their surface longitudinally carinate on outer half; deltg II triangular not fused to deltg III, deltg II-VII separated by sutures; pe-angles of deltg VI slightly rounded, of deltg VII produced posteriorly over straight posterior margin of tergite VII; tergite VIII bilobate, visible tergites IX and X tricuspidate.  Venter. Spiracles II-IV ventral, V sublateral but barely visible from above, VI-VIII lateral and visible from above.
Etymology. Named after Ecuador, the country of origin.
Description. Micropterous; body subrectangular strongly attenuated anteriorly; surface of head and body with deep punctures, the elevated structures and lateral margins of head and body as well as of legs and antennae beset with fringe-like yellowish setae; colouration light brown, head darker, tibiae lighter.
Head. Distinctly wider than long, clypeus short, genae adherent shorter than clypeus; antenniferous lobes short diverging anteriorly; antennae about 2.5× as long as width of head; segment I longest, those following shorter and thinner; eyes stalked; postocular lobes converging posteriorly; rostrum arising from an open atrium as long as head.
Pronotum. Subrectangular about 3× as wide as long; lateral margins with rounded reflexed carinate paranota, posteriorly delimited by a notch followed by a laterally produced knob-like process; surface of disk with a median carina and rugose lateral sclerites; posterior margin carinate and convex, separated by a distinct suture from mesonotum.
Mesonotum. Strongly transverse, about 4× as wide as long; surface with a median ridge which continues throughout thorax and abdomen, laterally flanked by oval smooth depressions followed by rugose sclerites, these delimited laterally by basally elevated flap-like structures representing reduced wingpads; suture separating mesoand metanotum recognizeable lateral of median ridge, where it is marked only by a thin indistinct suture.
Metanotum. Fused to mtg I+II and tergal plate; continuous median ridge widened posteriorly then forming a cross-like ridge on mtg I+II; lateral sclerites with rugose callosities, depressed anteriorly; surface of mtg I+II deeply punctured.
Abdomen. Tergal plate fused to mtg I+II, median ridge narrower on mtg III continuing and raised posteriorly, highest on mtg IV-V; surface laterally with oval punctured depressions; deltg II+III fused, laterally expanded, an inclined carina marking posteror margin of deltg II; pe-angles of deltg V and VII roundly expanded.
Venter. Spiracles I-IV ventral remote from lateral margin, V and VI sublateral but visible from above, VII-VIII lateral and visible.
Legs. Long and slender, tarsi with long thin pulvilli. Etymology. Named after the Cotopaxi region, the second highest mountain in Ecuador, where this interesting new taxon was collected.
Description. Holotype male, micropterous; body surface deeply punctured with fringe-like pilosity on lateral margins of head, body, and carinate elevations, legs and antennae with fine erect setae; colouration light brown with darker head and lighter tibiae.
Pronotum. Subrectangular, 3× as wide across rounded lateral margins as long (33.5/11); lateral margins with rounded reflexed carinate paranota, posteriorly delimited by a notch followed posterolaterally by a laterally produced knob-like process; surface of disk with median carina and rugose lateral sclerites; posterior margin carinate and convex, separated from mesonotum by distinct suture.
Mesonotum. Strongly transverse, 4.5× as wide across wingpads as long at middle (45/10); consisting of two transverse laterally rounded sclerites lateral of median moderately elevated ridge, surface of sclerites with an oval smooth depression adjacent to median posteriorly widening ridge followed by rugose callosities; all margins carinate, anterolateral angles triangularly raised to level of adjacent knob-like process of pronotum, posterolaterally produced into oval flap-like expansions, these representing reduced wingpads; suture separating meso-and metanotum only developed lateral of median ridge, upon which the transverse fusion line is indistinct and barely discernible.
Metanotum. Fused to mtg I+II and tergal plate; continuous median ridge widened posteriorly then forming a cross-like elevated ridge on mtg I+II; lateral sclerites with rugose callosities, depressed anteriorly; surface of mtg I+II deeply punctured.
Abdomen. Tergal plate of abdominal mtg III-VI fused to mtg I+II, the median ridge narrower on mtg III continuing, widening and raised posteriorly, highest on abdominal scent gland at posterior margin of mtg IV-V; with oval punctured depressions laterally; lateral margins subparallel at deltg III+IV, dilated at deltg II, V and VI; deltg II+III fused, laterally expanded, an inclined carina marks the posteror margin of deltg II; pe-angles of deltg V and VII rounded expanded; tergite VII medially raised for reception of globose pygophore, this wider than long with a conical median eleva- tion; paratergites VIII cylindrical produced over pygophore; the single male was not dissected for the study of parameres.
Venter. Spiracles I-IV ventral, remote from lateral margin, V and VI sublateral but visible from above, VII-VIII lateral and visible.
Etymology. Refers to the cross-like elevated ridge on the thorax.
Description. Apterous female; body oval attenuated anteriorly, surface of head and body rugose and tuberculate, legs and antennae beset with stiff hairs bearing tubercles; colouration piceous, tibiae yellowish except base and apex.
Head. Slightly longer than width across eyes; clypeus narrow, flanked by anteriorly produced genae reaching about ½ of antennal segment I; antenniferous lobes wide, apex narrowly rounded; antennae about twice as long as width of head, antennal segment III longest, I and II shorter, IV fusiform; eyes slightly stalked; postocular lobes converging uniformly to narrow neck region; rostrum arising from slit-like atrium, shorter than head.
Pronotum. About 3× as wide as long, lateral margins angulate at humeri then triangularly projecting anteriorly, produced over anterior margin; disk with median carina flanked by rugose callosities; posterior margin separated from mesonotum by a deep furrow.
Mesonotum. With median posteriorly widening and moderately elevated pentagonal ridge and lateral subrectangular sclerites with rugose surface, their lateral margins rounded, produced laterally; separated from metanotum along lateral sclerites by deep grooves, median ridge fused and continuing on metanotum and mtg I+II where its structure disappears.
Metanotum. Lateral sclerites separated from continuous median ridge by deep depressions, their surface deeply punctured and callous, posteriorly completely fused to mtg I+II; lateral margins with a small round expansion.
Abdomen. Tergal plate roundly elevated at middle, highest on mtg IV-V, lateral parts with oval punctured depressions these laterally delimited by carinate structures; lateral margins rounded with partly visible rims of dorsally reflexed vltg II-VII these increase posteriorly; pe-angles of deltg II-VII with a distinct dorsal tubercle; deltg II-VII separated by sutures, triangular deltg II anteriorly reaching to metanotum .
Venter. Surface rugose and punctured, spiracles II-IV ventral, V sublateral and visible from above, VI and VII on sublateral tubercles of reflexed vltg VI and VII and visible from above, VIII dorsolateral.
Legs. Long and slender, tibiae medially curved, claws with thin pulvilli. Etymology. It is a pleasure to dedicate this interesting new flat bug genus to my friend Giovanni Onore (Quito), versatile and successful entomologist in Ecuador who made the species available for study.
Pronotum. Strongly transverse, more than 3× as wide as long (35/11); lateral margins angularly produced on humeri then triangularly projecting anteriorly, longer than collar; disk with a V-shaped median sclerite anteriorly followed posteriorly by small median triangular ridge separated from oval callosities by deep grooves; posterior margin convex, transverse suture separates the mesonotum.
Mesonotum. Distinctly wider than long (45/10), consisting of a median posteriorly widening and moderately elevated pentagonal ridge and lateral subrectangular sclerites with rugose surface, their lateral margins rounded, produced laterally; sepa-rated from metanotum along lateral sclerites by deep grooves, median ridge fused, continuing on metanotum and mtg I+II where its structure is obliterated.
Metanotum. About 3.5× as wide as length including fused mtg I+II (52/15); lateral sclerites separated from continuous median ridge by deep depressions, their surface deeply punctured and callous, posteriorly completely fused to mtg I+II; lateral margins with a small round expansion.
Abdomen. Lateral and anterior margins of tergal plate convex, posterior margin straight; its surface rather flat with moderately rounded elevation on mtg IV-V, highest at scent gland scar IV-V; lateral parts with oval punctured depressions on mtg IV-VI, those of mtg III larger, directed anteriorly, their lateral margins delimited by carinae, these enlarged on anterolateral angles; deltg II-VII separated by sutures, triangular deltg II anteriorly reaching metanotum; pe-angles of deltg II-VII slightly reflexed, rounded, with larger dorsal, granulate tubercle; dorsally reflexed margins of vltg II-VII partly visible from above as lateral rims which increase in size from deltg II-VI forming triangular tubercle on deltg VII; tergite VII with a median elevated ridge, tergite VIII bilobate, visible apices of tergites IX and X tricuspidate, as long as posteriorly produced paratergites VIII.
Venter. Spiracles II-IV ventral, V sublateral and visible from above, VI and VII on sublateral tubercles of reflexed vltg VI and VII and visible from above, VIII dorsolateral¸sternites separated by transverse sutures, surface rugose and punctured, Legs. Long and slender, femora cylindrical, tibiae medially curved, tarsi bisegmented, claws with thin pulvilli.
Etymology. The epithet refers to the piceous colouration of this unusual specimen.