Parableta (Parableta) cercata, Gorochov, 2018
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publication ID |
https://doi.org/10.31610/trudyzin/2018.322.4.398 |
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persistent identifier |
https://treatment.plazi.org/id/AF3387E1-D52C-FFE0-FCCB-FEA6FC5AFB23 |
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treatment provided by |
Felipe |
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scientific name |
Parableta (Parableta) cercata |
| status |
sp. nov. |
Parableta (Parableta) cercata View in CoL sp. nov.
( Figs 276–280 View Figs 276–289 , 290–296 View Figs 290–310 , 311, 312 View Figs 311–330 )
Etymology. This species name is based on the Latinized Greek morphological term “cercus” originating from the Greek root meaning tail.
Type material. Holotype – male, ECUADOR: Morona Santiago Prov., bank of Rio Morona near border with Peru, environs of Puerto Morona Vill., ~ 300 m, primary forest, at light, 5–15 January 2010, A. Gorochov . Paratypes: 4 males, same data as for holotype ; 2 females, ECUADOR, ~ 70 km SE of Lago Agrio Town, environs of S. Pablo de Kantesiya Vill. on Rio Aguarico, lowlying primary forest, on leaves of bushes at night, 10–17 November 2005, A. Gorochov, A. Ovtshinnikov ; 2 females, ECUADOR, 60–70 km E of Lago [lake] Grande on Rio Cuyabeno , very lowlying primary forest, on leaves of bushes at night, 2–9 November 2005, A. Gorochov, A. Ovtshinnikov .
Description. Male (holotype). Body colouration ( Figs 276, 277, 279, 280 View Figs 276–289 , 290–295 View Figs 290–310 ) yellowish with greenish tinge (greenish in living condition) and following marks: eye and most part of antennal flagellum (except for its base) light greyish brown; head dorsum with a pair of longitudinal whitish lines behind eyes; tegmina with three whitish spots of different size bordered by dense brown dots on each lateral field, with light brown dots on this field located along (near) lateral edge of dorsal field and with almost whitish dorsal field of right (lower) tegmen; most part of hind wing with transparent membranes, but distal portion of its costal part yellowish; legs with light brown interrupted longitudinal stripe on outer side of fore tibia, with brown solid longitudinal stripe on outer side of hind tibia (latter stripe absent in basal part of this tibia and in its distal quarter as well as almost in contact with bases of outer tibial spines), and with small and rather sparse dark brown marks on all tarsi; spines and denticles of legs as well as small apical hook of each cercus brown to light brown. Head with upper rostral tubercle rather small and simple (narrow in subapical part, barely widened and roundly truncated in apical part, with longitudinal dorsomedian groove reaching apex of this tubercle); lower rostral tubercle also small and simple, narrowing to narrowly rounded apex which somewhat narrower than apex of previous tubercle and almost in contact with ventral surface of latter apex; pronotum with disc flat and slightly narrowing to head, and with lateral lobes as in Fig. 276 View Figs 276–289 ; wings long, but tegmina slightly shorter than hind wings, moderately narrow, with normal RS having two branches in distal half, with two branches of RA in its distal part, with stridulatory vein of left tegmen wide in its lateral (proximal) half ( Figs 277, 279 View Figs 276–289 ), and with stridulatory apparatus in right (lower) tegmen as in Fig. 280 View Figs 276–289 . Last tergite almost as each of previous abdominal tergites in length but with short and wide as well as roundly truncate posteromedian lobe; epiproct with apical part conical but short (almost denticle-like) and directed backwards/upwards ( Fig. 290 View Figs 290–310 ); cercus rather long and moderately thin, distinctly thinner before cercal middle, with distal half dorsally concave and curved partly downwards (region of this curvature obtusely angular in profile; Figs 291, 293, 294 View Figs 290–310 ) as well as having small apical denticle directed medially ( Figs 295 View Figs 290–310 ); genital plate rather large, narrowing to apex, with moderately high lateral parts, with a pair of almost keel-like lateral folds, with small styles, and with very deep and very narrow notch between them ( Figs 292, 293 View Figs 290–310 ); genitalia with a pair of long membranous lobes, a pair of small stick-like lateral sclerites at base and one small semisclerotized plate between them (this plate with more or less deep fold along its median line; Fig. 296 View Figs 290–310 ).
Variations. Whitish lines on head dorsum sometimes absent; one paratype with colouration of tegminal lateral field as in holotype, but this field in other males with 1–2 small brown spots (i.e. without characteristic whitish spots or with indistinct traces of such spots only).
Female. General appearance very similar to that of males, but darkish marks on fore tibia sometimes absent, dark brown marks on tarsi often very sparse, lateral tegminal field with 0–3 small darkened spots only, and dorsal tegminal field completely yellowish and with venation typical of females of Parableta s. str. Last tergite having posteromedian lobe almost as in male in shape but smaller; epiproct similar to that of male but with clearly shorter conical part; cerci elongately conical but comparatively short and with almost spinule-like apical part; genital plate small and rather narrow (this plate almost triangular but with rather high and slightly concave lateral parts as well as with narrow and truncated or barely notched apex; Fig. 311 View Figs 311–330 ); ovipositor completely lacking denticles ( Fig. 312 View Figs 311–330 ).
Length (mm). Body: male 20.0–23.0, female 21.0–23.0; body with wings: male 43.0–45.0, female 45.0–47.0; pronotum: male 5.1–5.4, female 5.7–6.1; tegmina: male 32.0–34.0, female 36.0–38.0; hind femora: male 21.0–22.0, female 23.0–25.0; ovipositor 8.0–8.5.
Comparison. The new species is distinguished from P. tapirapes ( Brazil: Mato Grosso) and P. boliviana ( Bolivia: Santa Cruz) by the stridulatory vein of left tegmen clearly wider; from P. kempfi ( Brazil: Amazonas), by the proximal (not partly curved downwards) portion of male cercus distinctly shorter (the male genital plate is almost twice as long as this portion in P. cercata sp. nov., but such ratio is about 1.5 in P. kempfi ); from P. soror ( Brazil: Amazonas) and P. areolata ( Brazil), by the ovipositor lacking denticles as well as by the styles of male genital plate shorter (only from P. soror ). Differences from P. integricauda are less clear because the latter species was described from syntypes collected in Ecuador and Surinam, the countries located rather far from each other (i.e. these specimens may belong to two different species); from the Ecuadorian syntype (the photographs of this female are in OSF), P. cercata sp. nov. differs in the female tegmina somewhat longer (ratio lengths of tegmen to hind femur is about 1.5 in the new species and 1.4 in P. integricauda ), as well as in the hind tibia having a distinct darkened longitudinal stripe on the outer surface.
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