Scopadus charynae, Santos-Silva & Nascimento, 2019

Santos-Silva, Antonio & Nascimento, Francisco E. de L., 2019, On the true identity of Scopadus ciliatus Pascoe, reinstatement of Acanthomerosternoplini, and description of a new species (Coleoptera, Cerambycidae, Lamiinae), Iheringia, Série Zoologia (e 2019003) 109, pp. 1-11 : 7-10

Scopadus charynae sp. nov.

(Figs 11-22)

urn:lsid:zoobank.org:act:476BE3DD-2D6A-4F38-90C9-677A8BCB6AA1

Scopadus ciliatus ; TIPPMANN,1955:9; JÚLIO & MONNÉ, 2001:102; MONNÉ, 1995:5 (cat.; part); 2005:373 (cat.; part); MONNÉ et al., 2012:38 (distr.; part); MORVAN & ROGUET, 2013:24 (distr.); MONNÉ, 2018:504 (cat.; part).

Female (Figs 11-18, 22). Integument mostly dark brown, almost black; apex of genae, narrow anterior area of gulamentum, mouthparts, anteclypeus, labrum, and mesoventrite dark reddish brown; scape brown; antennomeres reddish-brown, gradually lighter toward distal segments; prosternal process reddish brown; coxae light reddish brown, more yellowish-brown on some areas; elytra with slightly distinct pale area close to obliQue sulcus on anterior half; femora reddish brown on base, gradually dark brown toward apex (except narrow dark brown distal area); tibiae and tarsi brown, irregularly tinted with reddish-brown.

Head. Frons large, transverse, minutely, densely micropunctate except small, nearly smooth central triangular area close to clypeus; with grayish-white pubescence not obscuring integument except glabrous smooth area. Vertex densely micropunctate; area between antennal tubercles and middle of upper eye lobes slightly depressed, tumid, convex from this point to prothoracic margin; with pale yellowish pubescence not obscuring integument (more grayish-white depending on light intensity), shorter, less conspicuous toward prothoracic margin. Area behind eyes densely micropunctate on wide area close to eye, smooth close to prothorax; with pale yellow pubescence on micropunctate area behind upper eye lobe, glabrous on smooth area; with grayish-white pubescence on micropunctate area, slightly longer and denser than area behind upper lobe, glabrous on smooth area. Genae slightly shorter than lower eye lobe; densely micropunctate close to eye, slightly striate centrally, smooth toward apex; with grayish-white pubescence not obscuring integument, glabrous on distal area. Antennal tubercles densely micropunctate except nearly smooth, narrow distal area; pubescence as on frons, but more pale yellow on some areas. Median groove slightly distinct from clypeus to area between lower eye lobes, distinct from this point to area between upper eye lobes, nearly indistinct toward prothoracic margin. Postclypeus narrow, coplanar with frons posteriorly, strongly inclined toward anteclypeus; finely carina-shaped on wide central area; glabrous laterally and narrow central area, with pale yellow bristly pubescence on sides of wide central area; with one long, erect, dark setae on sides of wide central region of posterior area; with long, erect pale yellow setae on sides of inclined area. Labrum large, convex, coplanar with anteclypeus at posterior half, inclined at anterior third; finely, sparsely punctate on central area; with sparse grayish-white pubescence on posterior half, interspersed with a few long, erect dark setae; with sparse golden pubescence on distal half, and fringe of golden setae on anterior margin. Gulamentum smooth, shining, glabrous, with long, erect, sparse dark setae on center of anterior area. Eyes not divided, with area of connection between lobes with one row of ommatidia (some ommatidia absent in row); distance between upper eye lobes 0.46 times length of scape; in frontal view, distance between lower eye lobes about eQual to length of scape. Antennae 1.8 times elytral length, reaching elytral apex at middle of antennomere IX. Scape gradually widened toward apex (distal area slightly wider than twice width of basal area); with grayish-white pubescence no obscuring integument (more pale yellow depending on light intensity); without erect setae. Pedicel and antennomeres III–VII with pubescence as on scape, and long, erect, sparse dark setae ventrally (longer, slightly more abundant toward VII). Antennomeres VIII–IX, basal half of X, and basal Quarter of XI with fringe of long, erect, dark setae ventrally. Antennal formula (ratio) based on length of antennomere III: scape = 0.94; pedicel = 0.20; IV = 1.13; V = 0.67; VI = 0.53; VII = 0.53; VIII = 0.49; IX = 0.45; X = 0.41; XI = 0.53.

Thorax. Prothorax distinctly wider than long (including lateral tubercle); with narrow constriction anteriorly, distinctly narrowed at posterior fifth; with large, nearly conical tubercle with rounded apex slightly after middle; area between anterior constriction and lateral tubercle slightly rounded. Pronotum in lateral view, nearly horizontal at anterior and posterior sixth, inclined between these areas; posterior margin sinuous; surface densely micropunctate except nearly smooth area close to posterior margin; with pale yellow pubescence not obscuring integument (more grayish-white depending on light intensity). Sides of prothorax with wide, longitudinal grayish-white pubescent band under lateral tubercle, glabrous on remaining surface. Prosternum with moderately dense grayish-white pubescence on sides of posterior half, sparse, pale yellow on center of posterior half; anterior half glabrous. Prosternal process with sparse pale yellow pubescence. Ventral side of mesothorax with sparse grayish-white pubescence, slightly denser on mesanepisternum and mesepimeron. Ventral side of metathorax with grayish-white pubescence, longer and denser on mesothorax, sparser on posterocentral area. Scutellum with sparse grayish-white pubescence. Elytra: anterior tubercle large, with slightly obliQue, truncate apex; with obliQue sulcus from near humerus to near suture before middle (slightly distinct toward humerus); outer side of obliQue sulcus margined by wide tumid band; moderately coarsely, sparsely punctate on basal half (punctures denser along obliQue sulcus) except smooth inclined area near humerus; distal half nearly smooth; area between obliQue sulci with grayish-white pubescence not obscuring integument; with brown pubescence inside obliQue sulcus, slightly following along suture, connected with moderately wide, nearly arched band at about middle (this latter widened toward lateral margin); with pale yellow pubescent band adjacent to anterior obliQue sulcus, distinct widened, almost covering entire dorsal surface toward arched band (this area reaching lateral margin close to arched band, and with sparse white pubescence dorsally close to arched brown band); glabrous on smooth area close to humerus, with sparse grayish-white pubescence toward middle of inclined area; with nearly golden pubescence from arched brown area to posterior fifth, not reaching lateral margin, except large, irregular central area with brownish pubescence (more distinct on center of dorsal surface), and transverse white pubescent macula laterally near posterior fifth; posterior fifth with sparse brownish pubescence, except yellowish, slightly denser pubescence along suture and close to margins. Apex of anterior tubercle with long, erect, moderately dense dark setae. Legs: femora with grayish-white pubescence not obscuring integument; tibiae with pale yellow pubescence, gradually bristly and interspersed with long, erect setae of same color toward apex; pubescence forming narrow crest along center of dorsal surface.

Abdomen. Ventrites finely, sparsely punctate; with sparse pale yellow pubescence from I to middle of V; with moderately abundant pale yellow pubescence on distal half of V; posterocentral area of V depressed; apex of V slightly rounded.

Males ( Figs 20, 21 ). Resembles female, but with longer antennae.

Dimensions (mm), 1 female. Total length, 7.00; prothoracic length, 1.35; anterior prothoracic width, 1.60; posterior prothoracic width, 1.35; maximum prothoracic width, 1.80; humeral width, 2.30; elytral length, 4.40.

Type material. Holotype female from BOLIVIA, Beni: Uyapi (Guanay), X-XI.1992, no collector indicated ( MZSP) . Paratypes: PERU, Junín: Valle de Chanchamayo , female, V.1938, former Tippmann collection ( USNM) . FRENCH GUIANA, Saül , male (ex larva), 30.VII.2007, Dalens P. H. col. ( PHDC) ; female (ex larva), 20.XII.2007, Dalens P. H. col. ( PHDC) ; female (ex larva), 28.XII.2007, Dalens P. H. col. ( PHDC) ; female (ex larva), 12.VII.2008, Dalens P. H. col. ( JLGC) .

Additional material, not included as paratypes. BRASIL, Rondônia: Ouro Preto do Oeste , male, XI.1983, Becker, Roppa & Silva col. ( MNRJ); 5 males, X.1986, O. Roppa, P. Magno & J. Becker col. ( MNRJ) .

Etymology. The new species is named in honor of our friend Charyn Juliana Micheli ( USNM).

Remarks. Based on the eye lobes interconnected by a narrow carina with scattered ommatidia, distal antennomeres with fringe of long setae ventrally, prothorax distinctly wider than long, and elytra without long and erect setae, S. charynae differs from S. ciliatus , and could be included in a new genus. This is because in S. ciliatus the eye lobes are interconnected by a row with 2–3 ommatidia, the pronotum is about as long as wide, distal antennomeres lack fringe of long setae, and the elytra have long and erect setae. However, the existence of a third undescribed species that we know of (which will likely be described in the near future), make those different features linked. In that third species, the eyes and antennae are as in S. ciliatus , but the prothoracic shape and absence of long and erect setae on elytra are as in S. charynae . We did not examine the males from the former MNRJ collection. However, the only consistent difference in the male figured in JULIO & MONNÉ (2001) is the antennae slightly longer. Also, it was possible to see that in nearly all paratypes the pronotum is slightly narrower, and has two circular spots with brownish and sparser pubescence. We assume that these two differences are only variations, especially because the circular spots are slightly indicated in the holotype.

Unfortunately, the specimens listed by JÚLIO & MONNÉ (2001) were deposited at MNRJ collection, which was entirely destroyed by fire recently. For this reason they were not included as paratypes, but allowed the inclusion of the Brazilian state of Rondônia as a place where the species also occurs .

Figures

Figs 15-22. Scopadus charynae sp. nov., paratypes: 15, dorsal habitus, female (USNM); 16, ventral habitus, female (USNM); 17, metatarsus, dorsal view, female (USNM); 18, metatarsus, lateral view, female (USNM); 19, labels, female (USNM); 20, dorsal habitus, male (PHDC); 21, lateral habitus, male (PHDC); 22, dorsal habitus, female (JLGC). Figures 20 and 21 by Pierre-Henri Dalens; figure 22 by Jean-Louis Giuglaris.