Tropidion flechtmanni, Santos-Silva & Nascimento & Biffi, 2019

Santos-Silva, Antonio, Nascimento, Francisco E. De L. & Biffi, Gabriel, 2019, A new species of Tropidion (Neoibidionini), synonymies in Rhinotragini, notes on Pirangoclytus (Clytini) andHemicladus (Calliini), andnew recordsin Cerambycidae (Coleoptera), Zootaxa 4614 (3), pp. 449-460 : 450-452

Tropidion flechtmanni sp. nov.

( Figs 1–4 )

Description. Male. Head and prothorax dark brown except yellowish-brown posterior area of gulamentum (more reddish-brown laterally); mouthparts mostly dark reddish brown with palpi yellowish-brown and mandibles mostly dark brown, almost black; scape reddish-brown with basal half irregularly dark brown, distal half gradually, irregularly reddish-brown (with small dark areas near apex); pedicel dark brown anteriorly, reddish-brown posteriorly; antennomeres reddish-brown, gradually lighter toward distal segments, except dark brown carinae of III–V; ventral surface of mesothorax dark reddish-brown except black narrow band on margin of some areas, especially on mesoventral process; ventral surface of metathorax reddish-brown anteriorly, gradually lighter posteriorly; anterior half of elytra yellowish-brown, slightly more reddish-brown in depressed areas, punctures reddish-brown; posterior half of elytra with wide, almost black transverse area from middle to posterior quarter, from elytral suture to epipleural margin, with anterior margin rounded and posterior margin truncated; posterior quarter of elytra pale yellow (punctures light reddish-brown); coxae mostly reddish-brown, especially mesocoxae; profemora dark brown basally, reddish-brown on remaining surface (slightly darkened on apex); meso- and metafemora dark reddish-brown on peduncle (tinted with irregular dark-brown areas), reddish-brown on remaining surface (slightly darkened on apex); tibiae nearly black on basal half, reddish-brown on distal half; tarsi reddish-brown; abdominal ventrites reddishbrown, gradually yellowish-brown toward ventrite V.

Head. Frons densely micropunctate interspersed with fine, moderately abundant punctures (general appearance finely rugose); longitudinally sulcate close to eyes; with minute, sparse yellowish-white setae (whiter depending on light intensity). Vertex with sculpturing as on frons, depressed from posterior margin of antennal tubercles; with minute setae as on frons, sparser toward prothoracic margin. Area behind upper eye lobes with sculpturing as on vertex, glabrous except a few short, yellowish-white setae close to eye (whiter depending on light intensity); area behind lower eye lobes finely transversely striate-punctate superiorly, gradually smoother toward ventral side; surface glabrous. Antennal tubercles moderately elevated, carinate close to apex; sculpturing and setae as on frons. Median groove distinct from clypeus to area between antennal tubercles, inserted into a narrow longitudinal depression on frons. Genae finely punctate; with short, decumbent yellowish-white setae. Postclypeus with sculpturing as on frons on wide central area, smooth laterally; short, erect, sparse yellowish-white setae on wide central area, glabrous laterally; one long, erect yellow seta on each side of wide central area. Labrum coplanar with anteclypeus on posterior third, inclined on anterior 2/3; long, erect yellow setae on inclined area. Mandibles with long, erect yellow setae on outer side, interspersed with short decumbent yellowish setae. Gulamentum transversely striate between the lower eye lobes, with short and long, erect yellowish-white setae (more abundant laterally), smooth and glabrous posteriorly. Distance between upper eye lobes 0.36 times length of scape; in frontal view, distance between lower eye lobes 0.64 times length of scape. Antennae 3.1 times elytral length, reaching elytral apex at distal fifth of antennomere VI. Scape piriform, arched in lateral view, depressed dorsally on base; with minute, sparse yellowish-white setae. Antennomeres III-V longitudinally carinate dorsally. Antennal formula (ratio) based on length of antennomere III: scape = 0.64; pedicel = 0.19; IV = 1.10; V = 1.16; VI = 1.21; VII = 1.19; VIII = 1.03; IX = 1.03; X = 0.96; XI= 1.32.

Thorax. Prothorax cylindrical, 1.25 times longer than wide, slightly widened centrally. Pronotum with distinct elliptical gibbosity in center of posterior half, densely micropunctate interspersed with fine, sparse punctures; dense, large silvery pubescent band on each side, from posterior margin to after middle, narrowed anteriorly; remaining surface with minute sparse grayish-white setae; with a few long, erect yellowish setae laterally on posterior half. Sides of prothorax with sculpturing as on pronotum; minute, sparse grayish-white setae, and a few long, erect yellowish setae. Prosternum nearly smooth on posterior half, finely, transversely striate on anterior half; yellowish-white pubescent macula on each side of posterior half (more whitish depending on light intensity), narrowly fused on base of prosternal process; remaining surface with a few short yellowish-white setae posteriorly, glabrous anteriorly. Prosternal process distinctly narrowed toward posterior quarter, then triangularly expanded; yellowish-white pubescence (more whitish depending on light intensity) except nearly glabrous triangular area. Ventral surface of mesothorax with grayish-white pubescence not obscuring integument, slightly denser laterally. Sides of posterior area of mesoventral process moderately tab-shaped. Metanepisternum and sides of metaventrite with grayish-white pubescence not obscuring integument; central area of metaventrite with sparse grayish-white pubescence interspersed with long, erect yellow setae emerging from moderately coarse punctures. Scutellum with silvery pubescence not obscuring integument. Elytra. Coarsely, moderately abundantly punctate (punctures slightly finer and sparser posteriorly); apex with long spine at outer angle, and short projection at sutural angle; with three rows of sparse, long, erect yellowish setae dorsally, central row disappearing posteriorly, and another row laterally on posterior quarter. Legs. Peduncle of femora longitudinally sulcate ventrally; yellowish-white pubescence not obscuring integument, interspersed with long, erect, sparse yellowish setae. Tibiae longitudinally carinate laterally; short, sparse yellowish-white setae on basal third, and bristly yellow pubescence on remaining surface, distinctly denser ventrally, especially on protibiae; long, erect, yellow setae, more abundant near apex. Metatarsomere I slightly shorter than II–III together.

Abdomen. Ventrites with grayish-white pubescence laterally, gradually sparser toward V; central area of ventrites with sparse grayish-white pubescence, interspersed with long, erect, sparse yellow setae; apex of ventrite V truncate, slightly concave centrally.

Dimensions (mm). Total length, 7.10; prothoracic length, 1.45; posterior prothoracic width, 1.10; anterior prothoracic width, 1.00; maximum prothoracic width, 1.15; humeral width, 1.55; elytral length, 4.40.

Type Material. Holotype male from BRAZIL, Mato Grosso do Sul: Selvíria (Unesp Farm; window-trap; “cerradão” fragment in advanced stage of regeneration; 20°23′22.5″S / 51°24′18.0″W), 23.X.2017, G. Paiola col. ( MZSP) . 1 paratype male, 28.X.2017 ( UNESP) (the remaining data are the same as the holotype).

Remarks. Tropidion flechtmanni sp. nov. is similar to T. zonapterum (Martins, 1962) ( Figs 5–6 ), but differs as follows: scape distinctly piriform; prothorax dark brown; pronotum with dense silvery pubescent band on sides of posterior area; dark elytral macula not projected forward along suture; femora mostly reddish. In T. zonapterum , the scape is not piriform, prothorax reddish, pronotum without bands of pubescence, at most with minute, transverse pubescence close to posterior margin, dark elytral macula projected forward along suture, femora black or distinctly dark brown.

Etymology. The new species is named in honor of Carlos Alberto Hector Flechtmann (UNESP).

1. Elytra with apical third or fourth red or orange red........................................................... 2

- Elytra with different color patterns........................................................................ 6

2 (1) Elytra with anterior half or anterior third reddish; with transversal dark-brown band on elytra........................ 2

- Elytra with another color pattern......................................................................... 3

2’ (1) Prothorax dark brown; pronotum with dense silvery pubescent band on sides of posterior area; femora mostly reddish. Brazil (Mato Grosso do Sul)........................................................................ T. flechtmanni

- Prothorax reddish; pronotum without bands of pubescence; femora black or dark brown. Brazil (Mato Grosso, Goiás, Distrito Federal, Mato Grosso do Sul, Tocantins, Maranhão, São Paulo), Bolivia (Santa Cruz)..................... T. zonapterum

Figures

FIGURES 1–6. 1–4, Tropidion flechtmanni sp. nov., holotype male: 1, Dorsal habitus; 2, Ventral habitus; 3, Lateral habitus; 4, Head, frontal view. 5–6, T. zonapterum (Martins, 1962), male: 5, Dorsal habitus; 6, Ventral habitus. Scale bars: 1–3, 5–6: 2 mm; 4: 1 mm.