Tuberculobasis guarani, Machado, Angelo B. M., 2009

Machado, Angelo B. M., 2009, Denticulobasis and Tuberculobasis, new genera close to Leptobasis, with description of ten new species (Odonata: Coenagrionidae)., Zootaxa 2108, pp. 1-36 : 18-22

publication ID 10.5281/zenodo.187806


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scientific name

Tuberculobasis guarani

sp. nov.

Tuberculobasis guarani sp. nov.

Figures 29–30 View FIGURES 25 – 34 , 64– 65 View FIGURES 57 – 65

Etymology: The name refers to the Guarani indian people who still inhabit various areas of the State of São Paulo.

Type specimens: Holotype (3). BRAZIL, São Paulo State, Ibitinga (21 º 45´S, 48 º 49´W), Fazenda Itaguaré, 17 -VI- 1965, K. Lenko leg. ( ABMM).

Description.Male holotype.

Head. Labium whitish yellow; labrum dark green; antefrons and top of head dark brown with rounded pale postocular spots.

Thorax. Prothorax yellowish brown except for dark brown anterior lobe.

Thorax, pterothorax: mesopleuron brown; metapleuron yellowish. Poorly defined grey stripes at posterior part of mesepisternum and metepisternum. Legs yellowish, wings hyaline, venation and pterostigma brown, Px in FW 11, in HW 10. R 3 arising near Px 5 in FW, near Px 4 in HW. Petiolation distal to Ac by a distance equal to Ac length in both wings.

Abdomen. S 1–2 dorsally brownish yellow ventrally yellowish with a grey dorso-lateral stripe. S 3–6 dorsally brown, laterally yellow, with a dark brown ring at distal 1 / 7. S 70 – 10 yellowish orange.

Structural characters. Hind prothoracic lobe with very small lateral lobes ( Figs 29, 30 View FIGURES 25 – 34 ), median lobe projecting caudally, semicircular, and two-lipped; both lips continuous ( Fig. 29 View FIGURES 25 – 34 ). Mesepisternal tubercles ( Figs 29, 30 View FIGURES 25 – 34 ) very high (2.83 mm), conical, with the apex directed laterally and bases adjacent to mid-dorsal carina ( Fig. 29 View FIGURES 25 – 34 ). Cercus 1 / 3 shorter than paraproct ( Fig. 64 View FIGURES 57 – 65 ) in posterior view ( Fig. 65 View FIGURES 57 – 65 ) with ventral process subtriangular. Penis as usual for the genus (as in Fig. 1 View FIGURE 1 ).

Dimensions (mm). Abdomen 32.5; HW 19.8.

Female. Unknown.

Remarks. Tuberculobasis guarani has the highest mesepisternal tubercle within the genus ( Fig. 30 View FIGURES 25 – 34 ). It belongs in the costalimai species group and it is close to T. arara . It shares with this species the presence of subtriangular short ventral process of cercus but can be separated from it by characters given in the key. Together with T. costalimai , T. guarani is the only Tuberculobasis so far reported from SE Brazil, and the first species of the genus recorded for the State of São Paulo.