Gorybia bahiensis Galileo and Martins, 2010

Galileo, Maria Helena M. & Martins, Ubirajara R., 2010, New species of Cerambycinae (Coleoptera, Cerambycidae) from South America, Insecta Mundi 2010 (115), pp. 1-9 : 2-4

Gorybia bahiensis Galileo and Martins , new species

( Figure 2 )

Description. General coloring brown; antennae, dorsal area of elytra and urosternites, reddish-brown. Frons and vertex with microsculptured alveoli. Antennal tubercles slightly projecting and acute. Upper ocular lobes with three rows of ommatidia. Antennae reach the apical one-third of the elytra. Scape punctate and microsculptured. Antennomere III not expanded towards the apex; antennomeres IV to X with an external projection at the apex, which becomes increasingly pronounced towards the apical antennomeres; antennomere XI appendiculate.

Prothorax rounded at sides; basal constriction pronounced. Pronotum ( Figure 2 ) completely alveolated, with long hairs and a shallow groove at the centre of the base. Prosternum smooth in the center and alveolated on the sides at the anterior regions; prosternal process not projecting. Mesosternum and mesepimera with shallow alveoli. Metasternum smooth in center; anterior region microsculptured at sides.

Elytra densely punctate at base, becoming gradually sparser towards the apex. Long and abundant hairs throughout the entire surface. Elytral apices emarginated with an external small spine and slightly projecting at sutural angle.

Meso- and metatibiae not expanded at apex. Urosternites with punctures and long, sparse hairs.

Measurements in mm. Total length, 6.4; prothorax length, 1.4; largest prothoracic width, 1.6; elytra length, 4.3; humeral width, 1.6.

Type material. Female holotype, BRAZIL, Bahia: São Félix do Coribe-Coribe, (km 24, 13 o 33’S 4415’W, 493 m), 07.XII.2007, F. Bravo col. ( UEFS).

Etymology. The specific name is an adjective allusive to the State of Bahia.

Diagnosis. Gorybia bahiensis sp. nov. is similar to G. adiaphora Martins, 1976 in general coloring, the pronotum having a shallow center-basal groove, elytral apices with a small spine at sutural angle and metatibiae not expanded towards the apex. It is distinguished by its denser pilosity, with long elytra hairs, which cover the entire surface (over five rows); antennomere III not projecting at the external apex; and urosternites punctate with long hairs. On G. adiaphora , the elytral hairs are organized in five rows; antennomere III is projecting at the external extremity and urosternites are not punctate.

Figures

Figure 1-5. Habitus. 1) Gorybia rondonia, female holotype, length 11.8 mm. 2) Gorybia bahiensis, female holotype, length 6.4 mm. 3) Calycibidion rubricolle, male holotype, length 7.9 mm. 4) Tropidion argentina, male holotype, length 10.6 mm. 5) Tropidion boliviensis, female holotype, length 11.4 mm.