Denticulobasis dunklei, 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 : 11-12

publication ID 10.5281/zenodo.187806


persistent identifier

treatment provided by


scientific name

Denticulobasis dunklei

sp. nov.

Denticulobasis dunklei sp. nov.

Figures 2 View FIGURE 2 a, 4, 5, 9, 12, 14, 16, 20, 21, 87.

Etymology: Named after my colleague Sidney W. Dunkle, who collected the specimens in Peru, in recognition of his important contributions to Odonatology.

Type specimens: Holotype (3) and allotype (Ƥ). PERU, Loreto Department. Explorama Lodge, 50 miles NE of Iquitos on Amazon River at the junction with Yanomano River (3 º 21´59 ´´S, 72 º 47´56 ´´W), 24 - VIII- 1989, S.W. Dunkley leg.( FSCA).

Description. Male holotype.

Head. Labium whitish yellow. Labrum, base of mandibles, and genae greyish brown. Anteclypeus, postclypeus, frons, antennae, and top of head brown with large blue postocular spots. Rear of head whitish yellow.

Thorax. Prothorax: Propleuron and anterior lobe light blue. Pronotum light brown. Pterothorax: mesopleuron dominantly yellowish brown. Horns and area between them black, except at their latero-basal region, which is bluish. Metepisternum yellowish brown and metepimeron yellowish white. Three blue stripes; antehumeral, metepisternal, and a poorly defined metepimeral. Legs yellow. Wings hyaline, venation brown, pterostigma brownish yellow surrounded by yellow. Px in FW 12–13 in HW 11. R 3 arising near Px 6 in FW and 5 in HW. Petiolation distal to Ac by a distance 1.5 times length of Ac in FW and equal to it in HW.

Abdomen. S 1 and S 2 dorsally brown, laterally light blue. S 3–6 dorsally brown, laterally yellow with black ring at distal 1 / 10. S 7 dorsally reddish brown, laterally yellow with black ring at proximal ¼. S 8–10 dorsally brownish yellow, laterally yellow. Cercus and paraproct brownish yellow.

Structural characters. Hind prothoracic lobe ( Fig. 4 View FIGURES 4 – 11 ) with lateral lobes minute, median lobe projecting caudally, subquadrangular and two-lipped; ventral lip continuous, and dorsal lip reduced to two flaps separated by an incision at mid-line. Mesepisternal horns in dorsal view ( Fig. 4 View FIGURES 4 – 11 ) strongly diverging, each tapering to a blunt tip, mostly smooth with a transversely ridged portion at distal 1 / 5. Cercus in dorsal view slightly wider at apex than at base (excluding distal lobe) ( Fig. 12 View FIGURES 12 – 17 ) with a whitish shallow subtriangular membranous depression at base ( Fig. 12 View FIGURES 12 – 17 ). In ventro-posterior view ( Fig. 16 View FIGURES 12 – 17 ) cercus is spoon-shaped, and continues apically as a distal lobe. A ventral transverse digitiform structure present at limit between main portion and distal lobe of cercus ( Fig. 16 View FIGURES 12 – 17 ) which is not visible in dorsal view ( Fig. 12 View FIGURES 12 – 17 ). Penis ( Fig. 87 View FIGURES 87 – 94 ) as described for the genus.

Dimensions (mm). Abdomen: 32.9; HW 18.82.


Florida State Collection of Arthropods, The Museum of Entomology