Nagma hovorei, Bezark & Santos-Silva, 2023

Bezark, Larry G. & Santos-Silva, Antonio, 2023, Expanding knowledge of American Cerambycidae (Coleoptera): new species, new records, and morphological variations, Papéis Avulsos de Zoologia 63, pp. 1-19 : 11-14

Nagma hovorei sp. nov. ( Fig. 5 )

Description: Holotype male ( Figs. 5 A-5D). Integument mostly brown; ventral mouthparts yellowish-brown (more orangish brown depending on light intensity); gulamentum yellowish-brown on posterior ¾; postclypeus mostly dark brown; sides of anteclypeus pale; posterior ⅔ of postclypeus dark orangish-brown and anterior third yellowish; scape light brown; pedicel brown basally, light brown on remaining surface;antennomere III dark orangish brown on basal third and apical sixth, brown on remaining surface; antennomere IV orangish on basal half, dark orangish brown on apical seventh, dark brown on remaining surface;antennomeres V and VII dark orangish brown on basal quarter, dark brown on remaining surface; antennomere V orangish on basal half, dark brown on apical half; antennomeres VIII and X light orange on basal ⅔, dark brown on apical third; antennomere IX reddish brown basally, dark brown on remaining surface; antennomere XI dark brown on basal ⅔, orangish brown on apical third. Ventral surface o mesothorax with irregular dark brown areas. Ventral surface of metathorax mostly blackish with irregular brown areas. Elytra mostly dark orangish-brown, gradually lighter toward apex, with irregular dark brown areas, most punctures dark brown, and blackish area of centrobasal crest. Basal half of profemoral club dark brown, more distinctly ventrally, and remaining surface of profemora light brown; basal ⅔ of ventral mesofemoral club blackish ventrally, and remaining surface of mesofemora brown, slightly darker dorsally on basal half of club; basal half of ventral surface of metafemoral club blackish, and remaining surface of metafemora brown. Tibiae brown basally, orangish brown on remaining basal half, with wide dark ring on base of apical half, ring dark brown dorsally and laterally, brown ventrally, and remaining surface orangish.Tarsi orangish, slightly lighter toward apex. Abdominal ventrite 1 somewhat dark brown basally, gradually slightly lighter toward posterior region, except blackish margins of intercoxal process, and yellowish apex; ventrites 2-4 reddish-brown, gradually slightly lighter toward apex, except yellowish apex; ventrite 5 dark reddish brown on basal half, orangish brown on apical half, slightly lighter toward apex.

Head: Frons ( Fig.5D ) abundantly,coarsely punctate;with somewhat sparse yellowish-brown pubescence, distinctly denser close to eyes. Vertex somewhat abundantly, coarsely punctate; with abundant yellowish-brown pubescence not obscuring integument, pubescence short- er and sparser centrally. Area behind upper eye lobe with sculpturing as on vertex; with abundant yellowish-brown pubescence partially obscuring integument, except subglabrous narrow area close to prothorax. Area behind lower eye lobes with dense yellowish-brown pubescence close to eye, glabrous close to prothorax. Genae with abundant yellowish pubescence not obscuring integument toward ventral surface, pubescence sparser toward frons and clypeus. Wide central area of postclypeus finely rugose-punctate; with somewhat abundant yellowish-brown pubescence not obscuring integument laterally close to frons, pubescence absent centrally and close to anteclypeus; area close to anteclypeus with sparse, moderately long yellowish-white setae directed forward; with long, erect yellowish-white setae interspersed. Sides of postclypeus glabrous. Labrum with long, erect yellowish-white setae on posterior half, more abundant, slightly yellower laterally; anterior margin with fringe of yellowish-brown setae. Gulamentum ( Fig. 5B ) smooth, glabrous, except intermaxillary process with finely rugose-punctate and with sparse, short yellowish-brown setae. Distance between upper eye lobes 0.40 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.62 times distance between outer margins of eyes. Antennae ( Fig. 5C ) 1.4 times elytral length, reaching elytral apex at middle of antennomere XI. Scape with abundant yellowish pubescence not obscuring integument. Pedicel with abundant yellowish pubescence dorsally and laterally, whitish ventrally; with one long, erect yellowish seta ventrally. Antennomeres III-IV with somewhat sparse yellowish-white pubescence on basal light region; dark area of III with sparse brownish pubescence;light apical area of III with abundant yellowish-white pubescence not obscuring integument; dark area of IV with abundant brown pubescence not obscuring integument; light apical area of IV with dense white pubescence; ventral surface of III-IV with sparse long, erect setae, setae yellowish on light areas, dark brown on dark area. Antennomeres V-XI with dense white pubescence on light area, brownish on dark area; with abundant, short whitish setae interspersed on dark pubescence, setae denser from VIII; erect setae of ventral surface as on antennomere III. Antennal formula (ratio) based on length of antennomere III: scape = 0.79; pedicel = 0.26; IV = 0.79; V = 0.52; VI = 0.47; VII = 0.42; VIII = 0.37; IX = 0.34; X = 0.32; XI = 0.37.

Thorax: Prothorax wider than long; sides with large, rounded tubercle centrally. Pronotum ( Fig. 5A ) abundantly, coarsely punctate; with large gibbosity on each side of middle, from anterior third to after middle, more elevated anteriorly; with somewhat dense yellowish-brown pubescence laterally, sparser on wide central area, partially yellowish-white on anterior half, except glabrous anterior area of gibbosities. Sides of prothorax ( Fig. 5C ) abundantly coarsely punctate, except mostly smooth area close to anterior margin; with abundant yellowish pubescence not obscuring integument, pubescence partially absent close to anterior margin. Prosternum somewhat abundantly, coarsely punctate; with somewhat sparse yellowish pubescence. Prosternal process with sculpturing and pubescence as on prosternum, except apex with sparser pubescence; narrowest area 0.45 times procoxal width.Ventral surface of mesothorax abundantly, coarsely punctate, except smooth apex of mesoventrite; mesoventrite with sparse yellowish pubescence, except glabrous smooth area; mesanepisternum and mesepimeron with abundant yellowish-brown close to elytra, pubescence sparser toward mesoventrite. Mesoventral process abruptly elevated anteriorly; densely, coarsely punctate; with sparse yellowish pubescence centrally, whitish laterally; apex truncate, slightly emarginate centrally; apex 0.69 times mesocoxal width. Metanepisternum abundantly, coarsely punctate; with abundant yellowish-brown pubescence not obscuring integument. Metaventrite densely, coarsely punctate; with abundant yellowish-brown pubescence on sides of posterior half and sparse yellowish-white pubescence on remaining surface. Scutellum with dense yellowish-brown pubescence, except glabrous anterocentral region. Elytra: Centrobasal crest slightly elevat- ed, gibbosity-shaped, with abundant long, decumbent dark brown setae. Surface abundantly, coarsely punctate, punctures finer and sparser on posterior third; with abundant yellowish-brown pubescence not obscuring integument, except: wide white pubescent band dorsally on anterior half, sub-straight laterally near humeri, oblique, reaching suture on remaining area; irregular white pubescent macula dorsally on posterior quarter, reaching suture, denser than anterior white pubescent band; and sides with abundant white pubescence not obscuring integument, except yellowish-brown pubescence close to humeri. With sparse, short, decumbent, thick dark brown setae interspersed throughout. Legs: Femora with abundant yellowish-brown pubescence not obscuring integument, except sparse brown pubescence ventrally on dark area. Tibiae with sparse yellowish pubescence, denser, bristly on apical third of ventral surface, except sparse dark brown pubescence dorsally and laterally on dark ring; dark ring with short, erect, thick black setae dorsally, more abundant on mesotibiae. Dorsal surface of tarsomeres with sparse white pubescence, sparser on III-V; metatarsomere I shorter than II-III together.

Abdomen: Ventrites ( Fig. 5B ) abundantly, coarsely punctate, punctures coarser, deeper on ventrite 1; ventrite 1 with abundant yellowish-white pubescence not obscuring integument laterally, sparse, whiter centrally; ventrites 2-4 with abundant yellowish-white pubescence not obscuring integument; ventrite 5 with abundant yellowish-white pubescence not obscuring integument on basal half, and abundant pale-yellow pubescence not obscuring integument on posterior half.

Female ( Fig. 5 E-F): Similar to male, differing by the antennae ( Fig. 5E ) slightly shorter, 1.25 times elytral length, reaching elytral apex at apex of antennomere XI, and abdominal ventrite 5 ( Fig. 5F ) longer, with longitudinal sulcus centrally on basal third.

Variation: Pubescence on abdominal ventrites denser and yellowish-brown, except on center of ventrite 1.

Dimensions in mm (holotype male/ paratype male/ paratype female): Total length, 4.70/4.00/4.55-5.15; prothoracic length, 0.95/0.90/0.85-1.05; anterior prothoracic width, 1.15/1.05/1.10-1.35; posterior prothoracic width, 1.20/1.10/1.10-1.35; maximum prothoracic width, 1.45/1.35/1.40-1.60; humeral width, 1.80/1.70/1.65-2.00; elytral length, 3.30/2.85/3.35-3.90.

Type material: Holotype male from ECUADOR, Loja: 18.5 km N Gonzanamá , 04°08′08.5″S, 79°23′36.4″W, 22.II.2006, F. T. Hovore & I. Swift leg. ( CASC) . Paratypes – Same data as holotype, 1 male, 3 females (1 female, MZSP; 2 females, 1 male, LGBC) .

Etymology: This species is named after Frank T. Hovore, who collected the holotype and so many more cerambycids during his many years of field work. Frank was very generous with his duplicate specimens and provid- ed many of them to the first author which inspired me to pursue the development of the New World Cerambycidae catalog website.

Remarks: The new species, Nagma hovorei , differs from the only known species currently in the genus by the presence of a slightly elevated centrobasal elytral crest with long and decumbent setae. In N. albofasciatum (Martins & Galileo, 2006) , there is no centrobasal crest on the elytra. However, we prefer not to describe a new genus for the new species until, eventually, more species are found. Nagma hovorei sp. nov. also differs from N. albofasciatum by the elytra without nearly scale-shaped setae (present in N. albofasciatum ).

Figures

Figure 5. Nagma hovorei sp. nov. (A-D) Holotype male: (A) Dorsal habitus; (B) Ventral habitus; (C) Lateral habitus;(D) Head, frontal view.(E-F) Paratype female: (E) Dorsal habitus;(F)Ventral habitus.