Lophopoeum paiolai, Monné & Santos-Silva & Flechtmann & Olivier, 2023

Monné, Miguel A., Santos-Silva, Antonio, Flechtmann, Carlos Alberto Hector & Olivier, Renan Da Silva, 2023, Brazilian fauna of Cerambycidae (Coleoptera): description of a new species and new records, Zootaxa 5352 (4), pp. 451-476 : 469-473

Lophopoeum paiolai sp. nov.

( Figs 26–30 )

Description. Holotype male. Head capsule blackish except dark-brown area close to prothorax and apex of genae; ventral mouthparts reddish brown except yellowish palpi; postclypeus dark brown; anteclypeus dark brown close to postclypeus, brownish yellow on remaining surface; labrum light brown close to anteclypeus, yellowish brown on remaining surface; mandibles black, except reddish-brown basal third of outer surface, reddish-brown area not reaching superior and inferior margins. Scape brown basally and apically, dark brown on remaining surface; pedicel reddish brown basally, dark brown on remaining surface; antennomeres III–VI yellowish basally, this area wider on IV, gradually black toward apex on remaining surface (missing antennomeres VII–XI). Pronotum dark brown, slightly lighter on part of lateral surface and close to anterior and posterior margins, except large black central area, transverse and narrowed laterally on its posterior half, Y-shaped on its anterior half. Sides of prothorax brown superiorly and inferiorly; central area with large, longitudinal black band. Prosternum mostly blackish laterally and reddish brown centrally; prosternal process reddish brown, except blackish margins. Mesoventrite mostly dark brown, mesoventral process reddish brown, except blackish margins. Mesanepisterna, mesepimera, metanepisterna, and sides of metaventrite blackish; remaining surface of metaventrite dark reddish brown. Scutellum brown, lighter apically, except black anterolateral regions. Elytra dark reddish brown anteriorly, gradually orangish brown toward apex, with abundant, irregular black maculae interspersed, largest one on sides of anterior half, another large, oblique, located dorsally after middle, and another moderately large, subrounded, located laterally on posterior third (obliquely aligned with the anterior black macula); with longitudinal black band close to suture on anterior quarter. Procoxae orangish; mesocoxae mostly brownish; metacoxae mostly dark brown. Trochantes, femoral peduncles, basal 3/4 of ventral surface of profemoral club, dorsal apex of profemoral club, basal half and apical quarter of dorsal surface of mesofemoral club, basal half of dorsal surface of metafemoral club, apex of dorsal surface of metafemoral club, basal 3/4 of inner surface of metafemoral club, and part of basal half of metafemoral club orangish; remaining surface of femora black. Tibiae blackish except pale-yellow ring about middle, ventral surface of ring reddish brown on protibiae. Basal half of pro- and mesotarsomeres I, and basal 2/3 of metatarsomere I pale yellow; remaining surface of tarsomeres I and entire surface of II–III blackish; tarsomeres IV–V and tarsal claws orangish. Abdominal ventrites reddish brown except blackish sides of 4, blackish sides and apical quarter of 5, and pale apex of 1–4.

Head. Frons smooth except fine punctures close to eyes; with abundant tawny pubescence partially obscuring integument; with one long, erect dark-brown seta close to eyes. Area between antennal tubercles with abundant yellowish-brown pubescence partially obscuring integument except glabrous median groove; remaining surface of vertex with dense black pubescence, except yellowish-brown pubescent band close to eyes and close to posterior region of median groove, and both yellowish-brown and dark-brown pubescence posteriorly. Area behind upper eye lobes with abundant yellowish-brown pubescence partially obscuring integument except blackish pubescence centrally close to vertex. Area behind lower eye lobes with abundant yellowish-brown pubescence, dense close to eyes, except glabrous area close to prothorax. Genae with abundant yellowish-brown pubescence partially obscuring integument except glabrous apex; with a few long, erect dark-brown setae interspersed. Wide central area of postclypeus with pubescence as on frons; with long, erect dark-brown setae interspersed. Sides of postclypeus glabrous. Labrum with moderately abundant yellowish-brown pubescence not obscuring integument, pubescence sparser anteriorly; with long, erect dark-brown setae interspersed; anterior margin with dense fringe of yellowish-brown setae. Distance between upper eye lobes 0.15 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.47 times distance between outer margins of eyes. Antennae (from base of scape to apex of antennomere VI) 1.8 times elytral length, reaching elytral apex at apical quarter of antennomere V. Scape with abundant yellowish-white pubescence not obscuring integument on base of dorsal surface, basal third and apex of sides, and on entire ventral surface; apex of dorsal surface with dense pale-yellow pubescence; remaining surface with abundant dark-brown pubescence not obscuring integument, dark-brown pubescence sparser than yellowish-white pubescence; basal 2/3 of ventral surface with sparse, thick black setae, setae gradually longer toward apex. Pedicel with abundant yellowish-white pubescence on basal half, dark brown on basal half; with one long, erect, thick black seta ventrally. Antennomeres III–VI with abundant yellowish-white pubescence not obscuring integument on light basal area, and abundant dark-brown pubescence on remaining surface, with short, decumbent yellowish-white setae interspersed; III–V with sparse, long, erect, thick black setae ventrally, setae distinctly sparser on V. Antennal formula (ratio) based on length of antennomere III: scape = 1.04; pedicel = 0.12; IV = 0.94; V = 1.00; VI = 0.96.

Thorax. Prothorax wider than long; anterior and posterior constrictions well marked; lateral tubercles large, conical, located centrally. Pronotum with slightly elevated gibbosity on each side of anterior third; moderately sparsely, coarsely punctate near anterior margin, on wide central area, near posterior margin, and laterally close to lateral tubercles of prothorax, punctures near posterior margin distinctly coarser; remaining surface smooth; with abundant yellowish-white pubescence, yellower on some regions, except abundant black pubescence on anterior and posterior sides of black integumental central macula, and moderately sparse brownish pubescence on part of sides of anterior half. Sides of prothorax with moderately abundant yellowish-white pubescence close to pronotum and prosternum, with dense black pubescence centrally. Prosternum with dense yellowish pubescence laterally, and abundant yellowish-white pubescence not obscuring integument on remaining surface, except glabrous transverse anterior sulcus. Prosternal process with abundant yellowish-white pubescence not obscuring integument; narrowest area 0.07 times procoxal width. Mesoventrite with abundant yellowish-white pubescence on wide central area, dense laterally. Mesanepisteran, mesepimera, metanespisterna, and sides of metaventrite with dense yellowish-brown pubescence; remaining surface of metaventrite with abundant yellowish-white pubescence partially obscuring integument, except glabrous metathoracic discrimen. Scutellum with abundant yellowish-white pubescence centrally, dense pale-yellow pubescence apically, abundant black pubescence on black integumental area, and sparse brownish pubescence on remaining surface. Elytra. Abundantly, coarsely punctate on anterior half, punctures sparser on posterior half; apex obliquely subtruncate; humeral carina not well marked but distinct; with abundant yellowish-white pubescence partially obscuring integument on light areas, yellowish-white pubescence forming dense oblique band close to oblique black integumental macula on posterior half, and dense macula laterally near middle; black integumental areas with abundant dark blackish pubescence partially obscuring integument on some maculae. Legs. Femora with abundant yellowish-white pubescence not obscuring integument, except apex with dense yellowish-brown pubescence, and dark-brown pubescent macula about middle of dorsal surface of club. Basal third of protibiae with somewhat sparse yellowish-white pubescence, light central ring with abundant yellowish-white pubescence; remaining surface with sparse dark-brown pubescence dorsally and laterally and dense, bristly yellowish-brown pubescence ventrally. Basal third of meso- and metatibiae with sparse brownish pubescence dorsally and laterally, and moderately abundant yellowish-white pubescence ventrally; light central ring with abundant yellowish-white pubescence not obscuring integument; apical half with abundant, bristly dark-brown pubescence, except apex of ventral surface with dense yellowish-brown pubescence; dorsal surface of mesotibiae with abundant, erect, short, thick black setae; dorsal surface of metatibiae with short, erect, thick black setae. Dorsal surface of tarsomeres I with abundant whitish pubescence on light integumental area, and dense blackish pubescence on remaining surface; dorsal surface of tarsomeres II–III with abundant dark-brown pubescence partially obscuring integument; tarsomeres IV mostly glabrous; tarsomeres V with abundant yellowish-white pubescence not obscuring integument; Metatarsomere I longer than II–III together.

Abdomen. Ventrites with abundant yellowish-white pubescence partially obscuring integument. Ventrite 5 slightly longer than 4, with long, decumbent dark-brown setae interspersed apically, apex concave.

Female. Similar to males, differing specially by the abdominal ventrite 5 more triangular and distinctly longer than ventrite 4.

Additional information based on paratypes. Antennae in male 4.9 times elytral length; antennomeres VII–XI yellowish basally, blackish on remaining surface.

Variations. Head capsule almost entirely brownish or orangish brown; scape orangish brown basally and apically, brown on remaining surface; central area on pronotum with four subrounded black maculae, two on anterior half and two on posterior half; ventral surface of thorax mostly brown; tarsal claws brownish; pronotum without black pubescence; longitudinal black band close to suture on anterior quarter absent.

Dimensions in mm (holotype male/ paratypes male/ paratypes female). Total length, 7.75/6.90–7.55/6.20– 7.20; prothoracic length, 1.40/1.35–1.45/1.15–1.40; anterior prothoracic width, 1.40/1.35–1.50/1.15–1.45; posterior prothoracic width, 1.65/1.70–1.75/1.40–1.75; maximum prothoracic width, 2.30/2.10–2.25/1.80–2.20; humeral width, 2.80/2.50–2.75/2.20–2.60; elytral length, 5.50/4.80–5.20/4.30–5.00.

Type material. Holotype male ( MZSP 55424 ) from BRAZIL, Minas Gerais: Capinópolis (talh„o1 arm2 cersp10), Fazenda Grama , 18º45’58.1”S 49º29’02.0”W, Khaya grandifoliola [C. DC.— Meliaceae ], stand, ethanol-baited FIT, 8.XI.2021, C. Faria leg. ( MZSP) . Paratypes — FRENCH GUIANA: kaw P.K 37.5, 1 male, 17.08.2005, O. Morvan leg. ( MZSP). BRAZIL, Amazonas: AM 010, km 26, Reserva Ducke, 1 male ( MZSP 55425), 15.VIII.1978, no collector indicated ( MZSP); 1 female ( MZSP 55249), VII.1995, M.G.V. Barbosa leg. ( MZSP); 1 female ( MZSP 55427), VIII.1985, M.G.V. Barbosa leg. ( MZSP); 1 female ( MZSP 55248), 8.VIII.1978, name of collector illegible ( MZSP). Rondônia: Porto Velho, Rio Madeira, 9º26’S 64º48’W, 2 females ( MZSP 55426; MZSP 55430), 17– 30.VI.2011, R.R. Silva et al. leg. ( MZSP). Goiás: Goiânia (1 cersp08), Escola Veterinária e Zootecnica da UFG, 16º36’20.3”S 49º16’29.1”W, semidecidual seasonal forest fragment, ethanol-baited FIT, 1 male, 23.XII.2021, J.M. Pereira leg. ( MEFEIS).

Etymology. This species is named for Gabriel Paiola, for his outstanding collecting and contribution to the knowledge of Cerambycidae of Selvíria, state of Mato Grosso do Sul.

Remarks. Lophopoeum paiolai sp. nov. is similar to L. bituberculatum ( White, 1855) ( Fig. 31 ) but differs especially by the elytral pubescent pattern on the posterior half: with large and oblique blackish pubescent macula dorsally, descending toward sides, with dense yellowish-white pubescent band close to its anterior margin, and posterior half of the elytra without subtriangular and large macula with brownish pubescence close to inferior margin of the oblique black macula. In L. bituberculatum , the black macula on the posterior half of the dorsal surface of the elytra is narrower, slightly oblique and ascending toward sides, as well as the dense grayish-white pubescence close to its anterior margin, and there is a large and subtriangular brownish pubescent macula close to its inferior margin. Although we did not examine specimens of L. bituberculatum and saw only a photograph of the holotype ( Fig. 31 ), apparently, the lateral tubercles of the prothorax are located more posteriorly with its apex more distinctly projected backward. Lophopoeum paiolai sp. nov. differs from L. bimaculatum (Gilmour, 1961) by the lateral tubercles of the prothorax not strongly directed backward (distinctly directed backward in L. bimaculatum ), elytra proportionally shorter and more triangular (longer and not triangular in L. bimaculatum ), humeral carina distinct although not well marked (absent in L. bimaculatum ), and meso- and metatibiae in both sexes with short, thick black setae dorsally (absent in L. bimaculatum ). It is also similar to L. fuliginosum, Bates, 1863 ( Fig. 32 ). However, according to Bates (1863) the ventral surface of the scape is “strongly flexuosus beneath” (not sinuous in L. paiolai sp. nov.), and the centrobasal crest of the elytra is “strongly elevated, acute, and naked” (not strongly elevated and with erect setae in L. paiolai sp. nov.). In fact, the centrobasal crest of the elytra ( Fig. 32 ) is much longer than in L. paiolai sp. nov.

Wappes et al. (2011) recorded L. fuliginosum from Bolivia (without illustration). However, the specimen identified by Wappes and illustrated on Bezark (2023a) is a specimen of L. paiolai sp. nov. Since we did not examine specimens from Bolivia, we cannot exclude L. fuliginosum from Bolivian fauna. It is possible that Wappes really had specimens of this species from Bolivia and just misidentified the specimen illustrated on Bezark (2023a).

Figures

FIGURES 26–30. Lophopoeum paiolai sp. nov., holotype male: 26) Dorsal habitus; 27) Ventral habitus; 28) Lateral habitus; 29) Head, frontal view; 30) Elytral centrobasal crests.

FIGURES 31–32. 31) Lophopoeum bituberculatum (White, 1855), holotype, dorsal habitus. 32) Lophopoeum fuliginosum Bates 1863. Both figures by Jesus Santiago Moure.