Gorybia rondonia 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

Gorybia rondonia Galileo and Martins , new species

( Figure 1 )

Description. General integument dark reddish-brown ( Figure 1 ). Frons and vertex with microsculptured alveoli. Upper ocular lobes with three rows of ommatidia. Antennal tubercles distant from each other and rounded at the top. Antennae almost reaching the elytral apex. Scape densely punctate. Antennomere III not projecting on the external apex; IV to X subserrate.

Prothorax rounded at sides. Pronotum (female), entirely alveolated except for a small longitudinal area at the basal groove; alveolus microsculptured. Prosternal process recurved. Mesosternum punctate and microsculptured. Metasternum shining at central area and microsculptured at the lateral-anterior regions.

Elytra with shining integument, densely punctate; at the basal one-half, gradually sparser towards the apex; erect hairs organized in five longitudinal rows. Elytral apices emarginated, having a short spine on the external side and wide projection on the internal one.

Anterior coxal cavities narrowly open behind. Meso- and metatibiae not expanded at the apex. Urosternites shining with microsculptured sides.

Measurements in mm. Total length, 11.8; prothorax length, 2.5; largest prothoracic width, 2.4; elytra length, 8.3; humeral width, 3.2.

Type material. Female holotype, BRAZIL, Rondônia: Mutum-Paraná (left margin of the Paraná River), 19.11.2003, without name of collector, light trap ( MZSP).

Etymology. The specific name is a noun in apposition and refers to the State of Rondônia.

Diagnosis. Gorybia rondonia sp. nov. is similar to G. quadrispinosa Galileo and Martins, 2008 by emarginate elytral apices, dark-reddish brown coloring, antennomeres IV to X subserrated, and upper ocular lobes with three rows of ommatidia. It is distinguished by having linear middle and posterior tibiae, which do not expand towards the extremity (without an external projection). In G. quadrispinosa , the meso- and metatibiae projecting at the apex.

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.