Tuberculobasis arara, 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 : 16

Tuberculobasis arara sp.nov.

Figures 25–26 , 57–59

Etymology: The name refers to the Arara indian people who inhabit the municipality of Ji-Paraná.

Type specimen: Holotype (3), BRAZIL, Rondônia State, Ji-Paraná (8º03´N, 62º52´W), 25-I-1961, Machado & Pereira leg. (inside forest, away from water) ( ABMM).

Description. Male holotype.

Head. Missing.

Thorax. Prothorax: Anterior lobe grey, median lobe brown with brown-yellowish lateral areas. Posterior lobe reddish brown. Pterothorax: mesopleuron and metepisternum ventrally brownish yellow, dorsally brown with a poorly defined antehumeral grey stripe and a well defined metepisternal stripe continuing on to mesinfrepisternum. Legs yellow, wings hyaline, venation brown, pterostigma reddish brown. Px in FW 11–12 in HW 10; R 3 in FW originating near Px 6, in HW near Px 4–5. Petiolation distal to Ac by a distance twice or 1.5 times the length of Ac in FW and 1.5 times in HW.

Abdomen. S1–2 dorsally brown, laterally whitish blue. S3–6 dorso-laterally dark brown with a pre-apical lateral yellow marking scarcely visible. S7–10 and cercus yellowish orange. Paraproct brown.

Structural characters. Hind prothoracic lobe ( Figs 25, 26 ) without lateral lobes, median lobe subrectangular, dorsal lip fused medially with ventral lip resulting a median depression ( Fig. 25 ). Mesepisternal tubercles ( Figs 25, 26 ) high (2.36 mm) and divergent in dorsal view ( Fig. 25 ) with the apex subtruncated ( Fig. 25 ). Cercus ( Figs. 57–59 ) shorter than S10, about 1/3 shorter than paraprocts, with short ventro-medial subtriangular process ( Figs 58–59 ). Penis typical for Tuberculobasis (as in Fig. 89 ).

Dimensions (mm). Abdomen 31.2; HW 19.2

Remarks. By having high metepisternal tubercles with their bases adjacent to mid-dorsal carina, paraproct much longer than cercus, and no lateral lobes in hind prothoracic lobe, T. arara belongs in the costalimai species group together with T. guarani , T. inversa , T. costalimai , and T. williamsoni . It is closer to

Figures

FIGURES 25 – 34. Tuberculobasis, male thorax in dorsal and lateral view in T. arara, holotype (25, 26); T. costalimai, holotype (27, 28); T. guarani, holotype (29, 30); T. inversa, holotype (31, 32); T. williamsoni, holotype (33, 34).

FIGURES 57 – 65. Tuberculobasis, male appendages in dorsal, lateral, and posterior view: T. arara, holotype (57 – 59); T. costalimai, paratypes (60 – 62); T. guarani, holotype (64, 65), T. inversa holotype in dorsal (63), dorso-lateral (66), and lateral (68) views. T. inversa, Tefé, Amazonas State, in postero-lateral (68) view [66, 67 by R. W. Garrison].

FIGURES 87 – 94. Penis in lateral and ectal views: D. dunklei, holotype (87); D. garrisoni, holotype (88); T. costalimai, paratype (89); T. geijskesi, holotype (90); T. mammilaris, lectotype (91); T. tirio, paratype (92); T. williamsoni, paratype (93); Leptobasis vacillans, Panamá (94) [91 by R. W. Garrison].