Tropidion argentina 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 : 5

Tropidion argentina Galileo and Martins , new species

( Figure 4 )

Description. Head reddish-brown, covered by a yellowish pilosity. Antennal tubercles projecting. Antennae reddish-brown, reaching elytral apices (males) at the tip of antennomere VII. Scape subpyriform, without a basal groove. Antennomere III carinate, slightly longer than IV.

Prothorax reddish-brown, longer than wide. Pronotum covered with sericeous pubescence, except in a center-longitudinal area and in a longitudinal band on each side; oblique branches begin at the anterior extremity of lateral bands, reaching the anterior one-third of the central-longitudinal band. Middle of pronotum with a central tubercle and a discrete gibosity on each side. Lateral portions of the prothorax smooth and shining. Prosternum with pubescence bands, prolonged up to the middle. Mesosternum and metasternum reddish. Scutellum covered by a whitish pubescence.

Elytra ( Figure 4 ) reddish-brown; each one with a lateral yellowish spot on the anterior one-third. Numerous hairs throughout the entire elytra, poorly organized in rows. Elytral apices rounded.

Femora reddish-brown, clearer at the peduncles and sparsely pubescent. Urosternites reddish-brown.

Measurements in mm. Total length, 10.6; prothorax length, 2.4; largest prothoracic width, 1.6; elytra length, 7.0; humeral width, 2.0.

Type material. Male holotype, ARGENTINA, La Rioja: Castro Barros (Santa Vera Cruz, 28 o 67’ S 66 o 96’W, 1600 m), 15.II.2005, L. Stange col. ( FSCA).

Etymology. Latin, rubrus = red; collum = neck; allusion to the red prothorax.

Diagnosis. Tropidion argentina sp. nov. is similar to T. intermedium (Martins, 1962) concerning unarmed elytral apices, but it is distinguished by its general reddish-brown coloring, having a yellow spot on the elytra, and by the pronotum, which presents three tubercles. On T. intermedium , the elytra are yellowish and without spots, the appendices are reddish and the pronotum presents five tubercles.

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.