Gorybia galileoae Wappes, Botero and Santos-Silva, 2019

Wappes, James E., Botero, Juan Pablo & Santos-Silva, Antonio, 2019, New species and taxonomical notes in Gorybia Pascoe, 1866 (Coleoptera: Cerambycidae: Cerambycinae), Insecta Mundi 691, pp. 1-16 : 4-6

Gorybia galileoae Wappes, Botero and Santos-Silva , new species

( Fig. 8–11 )

Description. Female. Integument mostly dark brown, almost black; head, antennae, femora, and parts of ventral surface very dark reddish-brown (most distinct with intense light); mouthparts reddish-brown, except maxillary palpomere IV yellowish-brown; elytra with very slightly violaceous reflections; head, prothorax, and ventral surface of mesothorax opaque; remaining surface shining (light-reflecting).

Head. Frons and vertex distinctly reticulate; with short, sparse, decumbent yellowish-white setae interspersed with long, erect, thick setae of same color on frons, more abundant on anterior area. Area behind lower eye lobes coarsely, shallowly punctate close to eye, somewhat rugose on remaining surface; with long, erect yellowish-white setae close to eye. Genae with apex slightly projected, blunt; with very short, sparse yellowish-white setae near eye, and long, erect yellowish-white setae on remaining surface (yellower depending on light intensity). Antennal tubercles with apex moderately elevated and acute; sculpturing as on frons, except nearly smooth distal area; reticulate area with short, decumbent, sparse yellowish-white setae, smooth area glabrous. Gulamentum smooth, glabrous on posterior half, slightly depressed, somewhat opaque, reticulate on anterior half; with short, sparse, decumbent yellowish-setae on anterior half, and a few long, erect, thick yellowish-white setae close to eyes. Postclypeus moderately coarsely punctate on wide central area, smooth laterally; with short, moderately sparse, decumbent yellowish-white setae on wide central area, interspersed with long, erect, thick setae of same color on wide central area, glabrous laterally. Labrum coplanar with anteclypeus at posterior half, inclined, centrally concave at anterior half; with a few short yellowishwhite setae centrally, a long, erect, thick setae of same color laterally on posterior half; central area of anterior half with long, erect yellowish-white setae. Distance between upper eye lobes 0.95 times length of scape; in frontal view, distance between lower eye lobes 1.19 times length of scape. Antennae 1.3 times elytral length, nearly reaching elytral apex. Scape coarsely, partially confluently punctate; with minute, sparse yellowish-white setae interspersed with long, erect, thick setae of same color. Antennomeres carinate; pedicel and antennomeres III–IV coarsely, sparsely punctate; remaining antennomeres very finely, sparsely punctate; antennomeres III–IV with minute, sparse yellowish-white setae, and long, erect, thick setae of same color dorsally and ventrally (more abundant ventrally on III); remaining antennomeres with minute yellowish-white setae, more abundant on lateral carina of antennomeres V–IX, and throughout on X–XI, and long, erect, thick setae on apex of V–X; outer apex of antennomere III not projected, projected in IV–X. Antennal formula (ratio) based on length of antennomere III: scape = 0.76; pedicel = 0.16; IV = 0.93; V = 0.96; VI = 0.91; VII = 0.91; VIII = 0.83; IX = 0.83; X = 0.69; XI = 0.73.

Thorax. Prothorax slightly wider than long; sides uniformly rounded from anterior margin to posterior constrictions, which is well-marked. Pronotum coarsely reticulate (reticules smaller posteriorly), except nearly smooth, narrow area close to posterior margin; posterior half slightly, widely sulcate centrally, with anterior area smooth, shining (light-reflecting); with very small, erect yellowish-brown setae emerging from each reticule except some reticules with long, erect, thick yellowish setae (somewhat scale-shaped), distinctly more abundant in transverse, arched area about middle. Sides of prothorax with sculpturing and setae as on pronotum, with long setae absent toward prosternum. Prosternum imperfectly, shallowly reticulate (general appearance more rugose) except narrow anterior area not reticulate; with very small, sparse yellowish setae on posterior 2/3 (setae more whitish depending on light intensity), distinctly sparser on anterior third, and a few long, erect, thick setae of same color on apex of anterior third. Prosternal process with sculpturing and short setae as on posterior area of prosternum, and long, erect, thick setae of same color interspersed. Ventral surface of mesothorax imperfectly reticulate, especially laterally; with short, moderately sparse, decumbent yellowish setae, slightly longer on mesoventral process. Metanepisternum and anterolateral area of metaventrite densely micropunctate; remaining surface of metaventrite coarsely, shallowly, sparsely punctate (punctures smaller toward posterior area and absent on wide posterocentral area); with small, decumbent yellowish setae (more whitish depending on light intensity) emerging from each puncture except some punctures with long, erect, thick setae of same color. Scutellum finely rugose, with a few short yellowish setae.

Elytra. Coarsely, abundantly punctate (punctures slightly finer and sparser toward apex); with two distinct carinae, one dorsally, from near humerus to about middle, another slightly less distinct on lateral curvature, also from near humerus to about middle; with very small yellowish setae emerging from each puncture (gradually smaller toward apex), and long, erect, thick, sparse yellowish-brown setae adjacent to anterior area of some punctures (more abundant on posterior half, moderately aligned in rows on central area); apex emarginate.

Legs. Femora with very short, sparse, decumbent yellowish setae (absent on some areas), interspersed with long, erect, thick setae of same color. Tibiae longitudinally sulcate and carinate dorsally and laterally; densely micropunctate interspersed with sparse asperate punctures; protibiae with sparse, long, erect, thick yellowish setae, except posterior third of ventral surface with short, dense brownish setae; meso- and metatibiae with very small, sparse, decumbent yellowish setae interspersed with long, erect, thick setae of same color, more abundant on posterior ventral surface, especially on posterior third.

Abdomen. Ventrites finely, sparsely punctate; with slender yellowish setae emerging from each puncture, part of them long, part short. Apex of ventrite V moderately narrowly rounded, very slightly emarginate centrally.

Dimensions (mm). Total length, 11.60; prothoracic length, 2.25; anterior prothoracic width, 2.05; posterior prothoracic width, 1.85; maximum prothoracic width, 2.35; humeral width, 2.90; elytral length, 7.80.

Type material. Holotype female from BOLIVIA, Santa Cruz: Road to Itai (83 km N Camiri; 890 m; 19°20′S / 63°28′W), 17–18.XII.2011, Wappes, Lingafelter, and Woodley col. ( FSCA, previously in ACMT).

Remarks. Following the key from Martins (2003), Gorybia galileoae sp. nov. can be included in the alternative of couplet “29” (translated):

29(24). Elytral carina distinct ( Fig. 8 , 21 )............................................... 29 ′ — Elytral carina absent ( Fig. 12 ).................................................. 30

29′(29). Scape contrasting in color with antennomeres; prothorax slightly longer than wide; femora mostly reddish-brown ( Fig. 21 ). Brazil (Maranhão, Piauí, Bahia, Goiás, Mato Grosso, Mato Grosso do Sul, Minas Gerais, São Paulo)............... G. castanea ( Gounelle, 1909)

— Scape not contrasting in color with antennomeres; prothorax slightly wider than long; femora dark reddish-brown ( Fig. 8 )... G. galileoae Wappes, Botero and Santos-Silva , sp. nov.

However, it also can be included in the alternative of couplet “35” from Martins (2003), if the elytral carina is not considered distinct (translated):

35(34). Pronotum not reticulate. Brazil (Espírito Santo)................ G. acuta Martins, 1976 — Pronotum reticulate.......................................................... 35 ′

35′(35). General integument reddish-brown; prothorax slightly longer than wide ( Fig. 12 ). Brazil (Bahia)............................................ G. separata Martins, 1976

— General integument dark brown, almost black; prothorax slightly wider than long ( Fig. 8 ). Bolivia.................. G. galileoae Wappes, Botero and Santos-Silva , sp. nov.

Following the key from Galileo and Martins (2013) the new species can be included in the alternative of couplet “11” (translated):

11(10). Pronotum not reticulate, asperate. Bolivia......... G. florida Galileo and Martins, 2013 — Pronotum reticulate........................................................... 11 ′

11′(11). P r o t h o r a x d i s t i n c t l y l o n g e r t h a n w i d e; o u t e r a p e x o f m e t a t i b i a e p r o j e c t e d.

Bolivia........................... G. quadrispinosa Galileo and Martins, 2008 — Prothorax slightly wider than long; outer apex of metatibiae not projected................

................... Gorybia galileoae Wappes, Botero and Santos-Silva , sp. nov.

Additionally, Gorybia galileoae sp. nov. differs from G. alƲeolata Galileo and Martins, 2013 ( Fig. 13 ), and G. aeappesi Galileo and Martins, 2013 ( Fig. 14 ), with which it shares the pronotum distinctly reticulate and the non-microsculptured elytra, by the general color dark brown, almost black (reddish in these two species). Gorybia galileoae differs from G. guenda Galileo and Martins, 2013 , another Bolivian species with prothorax distinctly reticulate, by the wider prothorax, and by the general color distinctly darker (somewhat reddish in G. guenda ), but also by the procoxal cavities closed posteriorly (open in G. guenda ). Finally, the new species differs from G. inarmata Galileo and Martins, 2013 , by the antennae nearly reaching elytral apex (distinctly not reaching elytral apex in G. inarmata ).

Etymology. Named to honor Maria Helena Galileo, Porto Alegre-RS, Brazil for her many contributions to the taxonomy of New World Cerambycidae . Maria Helena’s taxonomic contributions (along with friend Bira Martins) to the Gorybia are unsurpassed.

Figures

Figures 8–14. 8-11) Gorybia galileoae new species, holotype female. 8) Dorsal habitus. 9) Ventral habitus. 10) Lateral habitus. 11) Head, frontal view. 12) G. separata, paratype female, dorsal habitus. 13) G. alƲeolata, paratype male, dorsal habitus. 14) G. aeappesi, paratype female, dorsal habitus.

Figures 21–30. Gorybia castanea. 21) Syntype female, dorsal habitus. 22) G. bispinosa, holotype male, dorsal habitus. 23–30) Elytral apex. 23) Female, specimen 1. 24) Female, specimen 2. 25) Female, specimen 3. 26) Female, specimen 4. 27) Male, specimen 1. 28) Holotype of G. bispinosa. 29) Male, specimen 2. 30) Syntype of G. castanea.