Eupogonius albofasciatus Wappes and Santos-Silva, 2020

Wappes, James E. & Santos-Silva, Antonio, 2020, Nomenclatural notes on some currently known species of Eupogonius LeConte, 1852 (Coleoptera: Cerambycidae: Lamiinae) and description of seven new species, Insecta Mundi 748, pp. 1-30 : 8-9

Eupogonius albofasciatus Wappes and Santos-Silva , sp. nov.

( Fig. 41–44 )

Description. Male. Integument mostly dark brown, almost black, shiny on pronotum and elytra; metatibiae partially dark reddish-brown; apex of antennomere XI orange.

Head. Frons finely, abundantly punctate; with pale yellow pubescence not obscuring integument, long, erect white setae, and long, erect brown setae interspersed. Vertex with sculpturing as on frons between antennal tubercles and upper eye lobes, slightly sparser on remaining surface; pubescence (more yellowish brown depending on light intensity) and erect setae between antennal tubercles as on frons; remaining surface with pubescence slightly denser, especially close to upper eye lobes. Area behind eyes with sculpturing as on frons, slightly denser and coarser behind lower eye lobes; with pale yellow pubescence partially obscuring integument, denser close to eye; with long, erect white setae close to eye, distinctly more abundant behind lower eye lobe. Gena moderately finely, abundantly punctate, distal area smooth; with pale yellow pubescence partially obscuring integument, denser close to eye, distal area glabrous; with a few long, erect white setae interspersed. Antennal tubercles with sculpturing as on frons, apex nearly smooth; pubescence and erect setae as on frons, apex with bristly white setae. Distance between upper eye lobes 0.52 times length of scape; in frontal view, distance between lower eye lobes 0.95 times length of scape. Antennae 1.7 times elytral length, reaching elytral apex at distal quarter of antennomere VIII. Scape coarsely, moderately abundantly punctate; with white and pale-yellow pubescence not obscuring integument, with long, erect, white and brown setae interspersed throughout. Antennomeres III–IX with white pubescence not obscuring integument, with long, erect, white and brown setae interspersed throughout (longer ventrally, especially from IV, gradually shorter and sparser toward IX); antennomere X with white pubescence basally (this area wider ventrally), with brownish pubescence on remaining surface, with short, erect pale yellow setae interspersed dorsally, and a few long brown setae ventrally; antennomere XI with brownish pubescence, with a few short pale yellow setae interspersed dorsally, and a few long, erect brown setae ventrally, except orange area with moderately dense white setae. Antennal formula (ratio) based on length of antennomere III: scape = 0.63; pedicel = 0.20; IV = 1.03; V = 0.46; VI = 0.43; VII = 0.41; VIII = 0.37; IX = 0.32; X = 0.25; XI = 0.31.

Thorax. Prothorax slightly wider than long; sides with small, distinct, acute tubercle centrally. Pronotum coarsely, abundantly punctate; with pale yellow (more yellowish brown depending on light intensity) pubescence, forming wide, longitudinal irregular band on each side, from base to apex, much narrower central band on anterior third, narrow Y-shaped band on posterior half, and slightly sparser between bands; with long, erect brown setae interspersed, and a few long, erect white setae interspersed laterally. Sides of prothorax with sculpturing as on pronotum; with pale yellow (more yellowish brown depending on light intensity) pubescence nearly obscuring integument, with long, erect white setae interspersed. Prosternum finely, abundantly punctate on posterior 2/3, sparser on anterior third; with pale yellow (more yellowish brown depending on light intensity) pubescence on posterior 2/3, with white pubescence interspersed, especially centrally, and long, erect white setae interspersed; anterior third with pubescence as on posterior third, but distinctly sparser, especially laterally, with a few long, erect white setae interspersed (shorter than on posterior area), except pubescence denser along anterior margin. Ventral surface of meso- and metathorax with pale yellow (more yellowish brown depending on light intensity) pubescence partially obscuring integument, denser laterally. Scutellum with pale yellow (more yellowish brown depending on light intensity) pubescence obscuring integument. Elytra. Coarsely, abundantly punctate on basal half, gradually finer, sparser toward apex; with wide, oblique white pubescence band from humerus to near suture before middle, and three wide, somewhat oblique, irregular bands on posterior half, the two more distal nearly reaching epipleural margin, the first smaller, less distinct and fragmented in right elytron (these three bands descending from the right elytron to left elytron); with narrow pale yellow pubescent band along suture (more yellowish brown depending on light intensity); remaining surface with pale yellow pubescent band along suture (more yellowish brown depending on light intensity), sparser on some areas, especially on triangular area on dorsal quarter; with long, erect, both white and brown setae interspersed. Legs. Femora with pale yellow (more yellowish brown depending on light intensity) pubescence not obscuring integument, with long, erect white setae, and a few long, brown setae interspersed. Tibiae with white pubescence not obscuring integument, except area of dorsal sulcus of mesotibiae with light yellowish-brown pubescence, with abundant, long, erect white setae interspersed.

Abdomen. Ventrites with pale yellow (more yellowish brown depending on light intensity) pubescence not obscuring integument, with long, erect white setae interspersed laterally, and long, erect brown setae on posterior third of ventrite V.

Dimensions (mm). Total length, 6.95; prothoracic length, 1.50; anterior prothoracic width, 1.30; posterior prothoracic width, 1.35; maximum prothoracic width, 1.70; humeral width, 2.00; elytral length, 4.90.

Type material. Holotype male from MEXICO, Puebla: 4.4 miles SW Acatepec , 26.VII.1974, Clark, Murray, Ashe, and Schaffner col. ( TAMU).

Remarks. Eupogonius albofasciatus sp. nov. is similar to E. comus (a specimen of the latter, also from Puebla, Mexico was examined), but differs as follows: body in male more slender; elytra with distinct white elytral bands; pubescence between white bands denser, except on circum-scutellar area; central area of prosternal process wider than basal diameter of antennomere III. In E. comus ( Fig. 12–15 ), the body is proportionally stouter, elytra have no distinct white bands, and pubescence between elytral bands is distinctly sparser, central area of prosternal process narrower than basal diameter of antennomere III. Eupogonius albofasciatus also slightly resembles E. affinis but differs by the distance between upper eye lobes wider, three times basal diameter of antennomere III (slightly larger than two times diameter of antennomere III in E. affinis ).

Etymology. This species is named for the attractive white fasciae on the elytra.

Figures

Figures 41–44. Eupogonius albofasciatus, holotype male. 41) Dorsal habitus. 42) Ventral habitus. 43) Lateral habitus. 44) Head, frontal view.

Figures 11–15. Eupogonius spp. 11) Eupogonius azteca, male, dorsal habitus. 12–15) E. comus, male. 12) Dorsal habitus. 13) Head, frontal view. 14) Ventral habitus. 15) Lateral habitus.