Idolopsalis setosa Iparaguerre & Pacheco Da Silva & Kamimura 2026, sp. nov.
Year: 2026
Type: article
Abstract: Idolopsalis setosa Iparaguerre & Kamimura, sp. nov. (Figs 1, 2) Holotype locality. Uruguay, Canelones, Salinas, 34°46'51.9"S, 55°50'10.4"W. Material examined. Holotype: URUGUAY: Canelones, Salinas / 34°46'51.9"S, 55°50'10.4"W / 1♂, 11.X.2024, cols. / Nadia Kacevas, Agustín Carbonell / & Pía Iparaguerre (FCE-DE 0361). Paratypes: Same data as holotype, except 1♀ (Allotype); same data as holotype, except 9♂♂, 7♀♀, under pine leaves and pine bark (FCE-DE 0352). Other material: URUGUAY, Canelones: same data as paratypes, except 3 nymphs (FCE-DE 0433); same data as paratypes, except 3♂♂, 1 nymph, 13.X.2024, cols. Damián Hagopián & Ary Mailhos, in a pine wood, under a fallen tree (FCE-DE 0308); same data, except 1♂ (FCE-DE 0324); Cerro Largo: Centurión, 32°17'08.5"S, 53°39'30.6"W, 1♀, 1 nymph, 2.V.2026, cols. Damián Hagopián, Ary Mailhos, Ignacio Davoine, Antonella Pollero, under a fallen tree bark (FCE-DE 0378); Paso Centurión, 32°08'01.3"S, 53°43'55.6"W, 2♂♂, 1 nymph, 1.V.2026, cols. Damián Hagopián, Ary Mailhos, Ignacio Davoine, Antonella Pollero, under a fallen tree bark (FCE-DE 0379); Paso Centurión, 32°8'1.89"S, 53°43'57.3"W, 1 nymph, 4.XI.2017, cols. Damián Hagopián, Álvaro Laborda, Santiago Teijón & Joaquín Ginella (FCE-DE 0343); Picada de Maya, Establecimiento "Maná del Cielo", 32°28'30.5"S, 53°32'28.6"W, 2♀♀, 21.II.2026, col. Ignacio Davoine (FCE-DE 0383); same data, except 32°28'22.1"S, 53°32'29.8"W, 1♂, 2♀♀, 30.IV.2026, cols. Damián Hagopián, Ary Mailhos, Ignacio Davoine, Antonella Pollero, riparian forest (FCE-DE 0395); Rocha: Corralito, [33°16'S, 53°47'W], 1♂, 2♀♀, 25.X.1939, col. Carlos Salvador Carbonell, Cebollatí hill (FCE-DE 0129); Parque Santa Teresa, 33°58'24.7"S, 53°32'34.9"W, 1♀, 21.XII.2023, cols. Andrés Costa, Leonel Basualdo, Matilde Panzera, Vitor Pacheco, Pía Iparaguerre, walking above leaf litter, at night (FCE-DE 0273); Punta Cebollatí, Laguna Merín, [33°16'S, 53°47'W], 1♂, 1♀, 22.II.1962, cols. Carlos Salvador Carbonell & Lucrecia C. de Zolessi, under bark (FCE-DE 0141). Description. General colour dark brown. Posterior part of the head, posterior part of the abdomen and pygidium dark reddish-brown. Legs yellowish, with middle of femora and tibiae darkened. Abdomen slightly punctate. Male body from 10.7–11.3 mm long with forceps and 9.2–11.1 mm without forceps. Female body from 9.9–13.5 mm long with forceps and 8.4–12.0 mm without forceps. Male (Fig. 1A): Head triangular and swollen, with slightly convex posterior margin and rounded posterior angles; transverse and median suture visible.Antennae 13–jointed (holotype’s antennae are broken, with 11 segments remaining on both sides), light brown. Antennal segments pyriform and elongated; first segment (scape) shorter than distance between antennal bases, second segment quadrate. Eyes shorter than post-ocular space. Pronotum quadrate, about as broad as head; anterior and lateral margins straight; posterior margin concave; median sulcus weak, but visible; anterior angles sharp, posterior angles rounded; prozona and metazona not differentiated. Mesonotum transverse; tegmina and wings absent. Metanotum with anterior margin straight and posterior margin concave. Prosternum narrowed before the fore coxae and then widened, with anterior margin rounded and posterior margin truncated; mesosternum with a broadly rounded posterior margin and the metasternum with a truncate posterior margin. First tarsal segment about as long as the third in the fore- and mid-legs, but almost twice as long as the third segment in the hind leg. Abdomen fusiform, tapering slightly towards the posterior region. Third and fourth tergites with glandular folds. Abdominal segments 4–8 with a short, sharp carina laterally (Fig. 1D). Ultimate tergite transverse, being twice as broad as long, with a weakly emarginated posterior margin and moderately widening lateral margins. Posterior margin of penultimate sternite (Fig. 1C) broadly rounded, slightly narrowing to the base; broader than long. Pygidium not visible from above, short, as wide as space between forceps branches, narrowing towards the posterior region and with a subtle notch in the middle. Forceps nearly symmetrical and stoutly built, with branches being subremote at the base, trigonal in basal one third, after which they become depressed and tapered with pointed, hooked tips. Penultimate sternite and ventral and inner lateral sides of forceps fully covered with short setae (Fig. 1C, D, E). Male genitalia (Fig. 1F, G) typical of the genus (basal piece narrow, median incision of inner margin deep, penis lobes paired, well-developed, a considerably long virga). Parameres (= external parameres or metaparameres of Steinmann 1989) of uniform width in basal two thirds, tapering on distal one third of length. Virga within penis lobes is about three and a half times as long as the paramere, each with a sclerotized basal plate, which presents an appendage (virgal appendage). Female (Fig. 2): Similar to the male, but with a cylindrical abdomen, narrowing towards the caudal region; ultimate segment nearly conical: broader at the anterior end and tapering towards the posterior end. Forceps short and trigonal in the basal two-thirds, tapered and symmetrical with a finely serrated internal margin and slightly incurved tips. Penultimate sternite rounded, covering the first third of the forceps.
Institutions: Universidad de la República de Uruguay, Keio University
Language: English
Topic: Hemiptera Insect Studies
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W7225740306
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