Golinca trevisani Valois & Silva

Valois, M. & Silva, F., 2015, A new species of Golinca Thomson (Coleoptera: Scarabaeidae: Cetoniinae): first record of the genus for Brazil, Zootaxa 3919 (1), pp. 192-196 : 193

Golinca trevisani Valois & Silva , new species

( Figs 1 –8)

Etymology. Named in honor of Olzeno Trevisan, who collected the holotype.

Material studied. Holotype male labeled BRAZIL: RONDÔNIA, Ouro Preto do Oeste, [62°14'22.9''W, 10°40'58.9''S], XII. 2000, O. Trevisan ( MPEG). Paratype male labeled Amazonas, BRASIL, A. Parko ( BCRC).

Diagnosis. Golinca trevisani can be distinguished from all the other species in this genus by the disc of pronotum being slightly convex anteriorly, with a wide oval and shallow depression on the midline behind the middle, and a round fovea on each side of the central depression; surface of lateral fovea densely punctate ( Fig. 5 ). Scutellum covered by sparse punctures on anterolateral portions ( Fig. 6 ). Spots on elytral surface round, dense, some confluent, forming 3 diagonal bands ( Fig. 1 ). Central portion of elytra with an oblique, sinuous, and narrow line extending backwards from the anterior portion of sutural interstria, near the scutellum, to the posterolateral portion of elytra. Preapical portion of elytra brown, lacking spots or lines ( Fig. 1 ). The form of the parameres is also diagnostic (Figs. 7–8).

Holotype. Length 42.8 mm. Head. Color dark green with smooth, metallic sheen. Dorsal surface strongly concave medially, covered by fine, longitudinal ridges; yellow setae distributed randomly. Anterior margin of clypeus with 2 parallel horns extending forwards and upwards with their apices slightly reflexed; apices of horns spoon-shaped, slightly expanded laterally into elliptical lobes, concave on dorsum ( Fig. 3 ). Horn length 7.84 mm. Thorax. Pronotum: 1/7 wider than long ( Fig. 5 ). Color dark green to black, with smooth, green sheen. Anterior and posterior angles obtuse. Sides evenly arcuate, weakly crenulate along posterior half ( Fig. 5 ). Surface of pronotum covered by dense punctures separated approximately by the diameter of 2 punctures ( Fig. 5 ). Mesometasternal process short, parallel to ventral axis of body, apex broadly rounded. Prosternum shiny with sparse, short setae; punctures denser on sides. Mesepisternum densely covered by setae. Metasternum shiny and disc flat with sparse punctures and setae. Lateral portion of metasternum strongly punctate, with long setae on anterior portion. Elytra. Shape suboval, twice longer than wide; widest medially; subtruncate at base and apex ( Fig. 1 ). Disc weakly convex. Color dark brown, with an almost symmetric pattern of dirty white spots forming diagonal lines on each elytron ( Fig. 1 ). Spots larger, denser, and confluent on sides ( Fig. 1 ). Legs. Color dark green with metallic sheen and yellow setae ( Fig. 1 ). Profemur with preapical tooth directed outward on anterior face; anterior face with dense, transverse ridges and long setae. Protibia abruptly expanded on inner margin at the basal sixth; outer margin with 3 acute teeth on apical half, median tooth larger. Mesotibia strongly curved toward body, dorsal surface covered by short, transverse ridges and setae. Dorsoapical angles of mesotibia and metatibia with small denticles ( Fig. 1 ). Apex of mesotibia with 1 short tooth bifurcate unequally. Lateral carina of metatibia with weak teeth. Apex of metatibia with 2 acute spurs. All tarsi robust; tarsomere 5 as long as tarsomeres 1–4 combined; claws large, strongly curved, sickle-shaped ( Figs. 1–2 ). Abdomen. Sternites with green metallic sheen ( Fig. 2 ). Sternites 1–4 with denser punctures on lateral portions and short setae. Sternites 5–6 covered by dense punctures and long setae ( Fig. 2 ). Pygidium. Color dark brown with green sheen. Shape wider than long, covered by dense, transverse ridges and short setae. Apex of pygidium with transverse row of long setae. Aedeagus. Phallobase at posterior end C-shaped. Parameres subparallel (Fig. 7), with a triangular plate ventrally located (Fig 8). Triangular plate with transverse row of long setae on apical margin (Fig. 8). Parameres 1/4 shorter than phallobase, triangular; apex, in dorsal view, strongly narrowed and sinuous, curved outward (Fig. 7). Endophallus without sclerotized structures.

Paratype. Length 37.5 mm, head horn length 6.6 mm. The paratype does not differ significantly from the holotype.

Figures

FIGURES 1 – 4. Golinca trevisani new species. 1. dorsal view; 2. ventral view; 3. head (posterior view); 4. head (anterior view). Photographs by César Favacho.

FIGURES 5 – 6. Golinca trevisani new species. 5. Pronotum; 6. Scutellum. Figures 7 – 8. Parameres. 7. dorsal view; 8. ventral view.