Osellaptera setifera, Heiss, Ernst, 2013

Heiss, Ernst, 2013, New Aradidae from Ecuador (Hemiptera, Heteroptera, Aradidae), ZooKeys 319, pp. 137-151 : 139-141

Osellaptera setifera sp. n. Fig. 1

Holotype male

labelled: Ecuador, Cotopaxi / Otonga (foresta nublada) / 2000m 23-30 VII 2004 / G. Osella leg. This specimen is designated as holotype and labelled accordingly.

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.

Legs. Long and slender, claws hook-like with thin pulvilli, with protibial comb.

Measurements. Length 5.4mm (incl. cleft pygophore); width of abdomen at apex of deltg II 2.1mm; across tergite III 2.6mm, across tergite VII 2.3mm; length / width of pygophore 0.45/0.75mm; length of antennae 2.6mm.

Etymology. The name refers to the dense setae covering legs and antennae and most body parts.