Eucharitolus thomazi, Monné & Botero & Olivier & Santos-Silva, 2024

Monné, Miguel A., Botero, Juan Pablo, Olivier, Renan Da Silva & Santos-Silva, Antonio, 2024, South American Acanthocinini (Coleoptera, Cerambycidae, Lamiinae): new species, synonymy, description of females, and notes, Zootaxa 5519 (3), pp. 345-383 : 353-356

Eucharitolus thomazi sp. nov.

( Figs 24–31 )

Description. Holotype male. Integument mostly dark brown; ventral mouthparts and posterior region of gulamentum light brown; frons and vertex blackish; scape and pedicel reddish brown; antennomeres III–IV light reddish brown; antennomeres V–VIII and basal 2/3 of IX orangish, slightly darker apically; apical third of IX and X–XI brown. Elytra reddish brown, gradually lighter toward apex, except three blackish maculae dorsally: one circular on anterior fifth; one irregular, largest, about middle; another subelliptical on posterior fifth. Femora dark reddish brown with large, irregular dark brown areas. Tibiae light reddish brown, slightly darker on apical quarter. Tarsi reddish brown. Abdominal ventrites irregularly blackish basally, this area wider on some ventrites, reddish on remaining surface, except brownish apex of ventrites 1–4.

Head. Frons densely, finely punctate, except smooth median groove; with abundant yellowish-brown pubescence not obscuring integument, except abundant brown pubescence not obscuring integument close to antennal tubercles, denser yellower pubescence close to eyes, and glabrous median groove; with one long, erect dark brown seta close to eyes. Area between antennal tubercles and posterior margin of upper eye lobes densely, finely punctate, with a few coarse punctures interspersed, except smooth central region, smooth area widened between antennal tubercles and anterior region of eyes; with abundant yellowish-brown pubescence partially obscuring integument laterally, glabrous on smooth area. Remaining surface of vertex abundantly, finely punctate, except smooth central region; with brown pubescence not obscuring integument laterally, glabrous centrally. Area behind eyes with narrow light yellowish-brown pubescent band close to eyes, glabrous on remaining surface. Genae 0.42 times length of lower eye lobe; with abundant yellowish-white pubescence close to eye, pubescence gradually sparser toward glabrous apex; with a few long, erect dark brown setae interspersed. Antennal tubercles with abundant brown pubescence not obscuring integument, pubescence partially yellowish brown dorsally. Wide central area of postclypeus with abundant yellowish-brown pubescence partially obscuring integument, with long, erect dark-brown setae interspersed. Sides of postclypeus glabrous. Labrum with moderately abundant brownish pubescence not obscuring integument on posterior third, glabrous on remaining surface, except short fringe of yellow setae centrally on apex; pubescent area with long, erect dark-brown setae interspersed. Gulamentum smooth, glabrous, except sparse brown pubescence on intermaxillary process. Distance between upper eye lobes 0.32 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.59 times distance between outer margins of eyes. Antennae 3.7 times elytral length, reaching elytral apex at basal fifth of antennomere VI. Scape and pedicel with moderately abundant yellowish-white pubescence not obscuring integument; pedicel with a few moderately short, erect, thick dark-brown setae ventrally. Antennomeres III–XI with abundant yellowish-white pubescence not obscuring integument, pubescence whiter from IX; antennomeres III–VIII with moderately short, erect, thick dark-brown setae ventrally, setae sparser toward VIII; apex of antennomere IX with a few moderately long, erect, thick dark-brown setae dorsally and ventrally on apex. Antennal formula based on length of antennomere III: scape = 1.09; pedicel = 0.14; IV = 1.12; V = 1.14; VI = 1.14; VII = 1.09; VIII = 1.17; IX = 1.22; X = 1.34; XI = 2.09.

Thorax. Prothorax wider than long; anterior constriction narrow, well marked; sides sinuous, distinctly divergent from anterior constriction to lateral tubercles, then parallel-sided toward posterolateral angles; lateral tubercle large, with acute apex slightly directed backward, located on posterior quarter. Pronotum densely, coarsely punctate, except sparser punctures anterocentrally and smooth area close to posterior margin; punctures following posteriorly toward sides of prothorax; with yellowish-white pubescence not obscuring integument, pubescence sparser anterocentrally; with a few long, erect dark-brown setae close to lateral tubercles of prothorax. Sides of prothorax moderately abundantly and finely punctate; with abundant yellowish-white pubescence not obscuring integument, pubescence denser, yellower close to procoxal cavities. Prosternum with abundant yellowish-white pubescence not obscuring integument, pubescence slightly denser laterally, except glabrous anterior sulcus. Prosternal process with abundant yellowish-white pubescence not obscuring integument; narrowest area 0.3 times procoxal width. Ventral surface with abundant yellowish-brown pubescence laterally, partially obscuring integument on some areas, and yellowish-white pubescence on remaining surface, yellowish-white pubescence distinctly sparse on central area of mesoventrite. Sides of mesoventral process convergent on anterior half, parallel on posterior half; apex slightly concave, as wide as 0.42 times mesocoxal width. Scutellum with sparse yellowish-white pubescence. Elytra. Subparallel-side on anterior third, then with sides gradually convergent toward apex; apex slightly obliquely truncate, with outer angle triangularly projected, and concave between outer and sutural angles; abundantly, coarsely punctate on anterior half, punctures denser toward suture, punctures finer, sparser, shallower on remaining surface, almost absent on posterior fifth; with abundant pale-yellow pubescence not obscuring integument, except abundant blackish pubescence not obscuring integument on blackish integumental areas, and dense pale-yellow pubescence surrounding blackish integumental areas. Legs. Femora with abundant yellowish-white pubescence not obscuring integument, except light yellowish-brown pubescence on dorsal and lateral surfaces of femoral club. Tibiae with abundant yellowish-white pubescence not obscuring integument, pubescence denser on metatibiae, except abundant, bristly dark-brown pubescence on posterior half of ventral surface of protibiae and close to apex of ventral surface of meso- and metatibiae, and dense, erect, thick blackish setae on dorsal sulcus of mesotibiae; ventral surface of mesotibiae with sparse, short, erect dark-brown setae; almost entire surface of metatibiae with short, erect, thick blackish setae. Dorsal surface of tarsomeres with abundant yellowish-white pubescence not obscuring integument; metatarsomere I 1.6 times longer than II–III together.

Abdomen. Ventrites with abundant yellowish-white pubescence not obscuring integument, except glabrous apices of ventrites 1–4. Apex of ventrite 5 distinctly V-shaped notched.Apex of last tergite truncate, slightly concave centrally.

Dimensions (mm). Total length, 8.60; prothoracic length, 1.65; anterior prothoracic width, 1.35; prothoracic width close to anterior constriction, 1.70; posterior prothoracic width, 1.80; maximum prothoracic width, 2.35; humeral width, 2.80; elytral length, 6.00.

Type material. Holotype male ( MZSP 60918 ) from BRAZIL, São Paulo: Eugênio Lefrévre , 1200 m, Pindamonhangaba, 21.XII.1962, Exp. Dpto. Zool. [Expedição Departamento de Zoologia] leg. ( MZSP).

Note: Eugênio Lefévre is a railway station on the Campos do Jordão Railway. It is located in Santo Antonio do Pinhal, at 1,162 meters above sea level.

Etymology. Species dedicated to Thomaz Ricardo Favreto Sinani, ZUFMS technician, enthusiast, and great insect collector from Mato Grosso do Sul.

Remarks. Eucharitolus thomazi sp. nov. is similar to E. bellus but differs as follows: distance between upper eye lobes about three times width of one upper lobe; pronotal punctures denser on wide central area ( Fig. 28 ); prosternal and mesoventral processes slight wider ( Fig. 29 ), and pro- and mesofemoral clubs distinctly wider ( Figs 30–31 ). In E. bellus , the distance between the upper eye lobes is equal to about twice the width of one upper lobe, pronotal punctures are abundant, but not distinctly denser on the wide central area ( Figs. 1, 2, 6 ), prosternal and mesoventral processes slight narrower ( Fig. 5 ), and the pro- and mesofemoral clubs are narrower in males ( Figs 3–4 ).

Figures

FIGURES 24–31. Eucharitolus thomazi sp. nov., holotype male (MZSP 60918): 24) Dorsal habitus; 25) Ventral habitus; 26) Lateral habitus; 27) Head, frontal view; 28) Pronotum; 29) Prosternal and mesoventral processes; 30) Profemur; 31) Mesofemur.

FIGURES 1–6. Eucharitolus bellus (Melzer, 1927). 1) Lectotype male, dorsal habitus; 2) Female (MZSP 60900) from Brazil (Santa Catarina, Joinville), dorsal habitus. 3–6) Male (MZSP 60902) from Brazil (São Paulo, São Paulo): 3) Profemur; 4) Mesofemur; 5) Prosternal and mesoventral processes; 6) Pronotum.