Telebasis divaricata, Angelo B. M. Machado, 2010

Angelo B. M. Machado, 2010, Seven new species of Telebasis from Brazil (Odonata: Coenagrionidae), Zootaxa 2384, pp. 53-64 : 56-57

Telebasis divaricata sp. nov. Figures 1, 7 , 14 , 23

Etymology: From Latin divaricata , spread apart, an allusion to the divaricated horns of prothoracic lobe of the female ( Fig. 1 ).

Types. Holotype ♂, BRAZIL, Pará State, Cachimbo, 8° 57' S, 54° 54' W, 400m, x-1955, P.F.S. Pereira leg. Allotype ♀ same data as holotype. Types deposited in ABMM.

Description. Male. Holotype. Head missing. As judged by the allotype, rear of head most likely orange. Thorax. Pterothorax with middorsal carina and medial 0.25 of mesepisternum dark metallic green, remainder of mesopleuron and metepisternum yellowish brown, metepimeron yellow. Legs yellow. Wings hyaline, Px in FW 11, in HW 9, R3 arising near Px 5 in FW near Px 6 in HW, anal vein separating from wing margin at Ac in FW and at a distance proximal of Ac that is half its length in HW, pterostigma light brown surmounting one cell. Abdomen with anterior half of S1 yellow, posterior half orange yellow; S2 orange yellow; proximal half of S3 orange yellow, distal half grey; S4–5 dark brown, laterally yellow; S9–10 orange.

Structural characters. Cercus longer than S10, and about twice the length of paraproct ( Fig. 14 ). In lateral view with the dorsal margin almost straight the ventral margin concave at the distal half, with no tooth ( Fig. 14 ); in medio-dorsal view ( Fig. 23 ) with a curved black plate with a central concavity delimiting two teeth. Paraproct in lateral view acuminate ( Fig. 14 ). Penis ( Fig. 7 ) with poorly developed inner fold, and a large terminal fold, in lateral view with a small lateral lobe at distal third, in ectal view distally straight, twice broader at apex than at base.

Dimensions. Abdomen 21.0; HW 16.1

Description. Female allotype. Head. Labium yellow, genae, base of mandibles yellow, anteclypeus and labrum green, the latter with the border yellow; antefrons, upper part of head in front of median ocellus reddish brown, remainder of upper part of head metallic black with diagonal band between lateral ocellus and antennal base and occipital bar orange; rear of head orange. Thorax. Prothorax orange yellow; pterothorax with mesepisternum including middorsal carina orange yellow, mesepimeron yellowish orange, metapleuron whitish yellow except for an yellowish orange stripe at metepisternum. Legs yellow except for flexor surface of femora that are orange yellow. Wings hyaline. Px in FW 11, in HW 9, R 3 in FW arising near Px6, in HW near Px5. Anal vein in FW separating from the wing margin by a distance distal to CuP that is about the length of CuP, in HW about 1/2 the length of CuP; pterostigma yellow surmouting one cell. Abdomen. S1–3 dorsally orange red, laterally yellow; S4–7 dorsally dark brown, laterally yellowish orange; S8–10 orange red with a lateral black spot at S9; valves of ovipositor yellow.

Structural characters. Hind prothoracic lobe( Fig. 1 ) with well developed median and lateral lobes, the median with two divaricate horn-like processes and a small median tooth, originating from a curved transverse ridge.

Dimensions. Abdomen 22.5; HW 16.9

Remarks. Male of T. divaricata shares with T. corbeti , T. demarara , T. rubricauda and T. versicolor the very long cercus with apex not notched. It differs from T. demarara and T. rubricauda by the predominantly orange color (only S8–S10 orange in T. rubricauda ). From T. sanguinalis , T. versicolor and T. corbeti it differs by absence of a ventro-basal tooth on cercus ( Figs. 14 , 23 ). It differs also from T. corbeti , T. demarara and T. rubricauda by having the penis with a short disto-lateral lobe ( Fig. 7 ). Female of T. divaricata unique by divaricate hind prothoracic lobe ( Fig. 1 ). By long length of cercus in lateral view ( Fig. 14 ), T. divaricata keys to M-4, couplet 3 in Garrison (2009). This key can be modified as follows to accommodate T. divaricata .

3. Medial 0.33 of prothoracic posterior lobe evenly curved (RG Fig. 9 f); only S8-10 red; ventral margin of cercus in medio-dorsal view with elongate rim at basal 0.50 as well as small, incurved apical tooth (RG Fig. 18 j); apical segment of penis unbranched (RG Fig. 14 j); Venezuela south through Brazil, Peru and Bolivia (RG Fig. 37).................. ................................................................................................................................................................. T. rubricauda

3’. Medial 0.33 of prothoracic posterior lobe quadrate (RG Figs. 9 c, h); all abdominal segments red-orange; ventral lobe on cercus at basal 0.50 present (RG Figs. 17 c, 19c) or absent ( Fig. 23 ) and with (RG Fig. 19 c) or without ( Fig. 23 , RG Fig. 17 c) a medially directed tooth on medial margin at distal 0.65; tip of cercus lacking (RG Figs. 17 c, 19c) or

armed with an apical tooth ( Fig. 23 ); apical segment of penis two-branched (RG Figs. 13 c, 15a), or with a small disto-lateral lobe ( Fig. 6 ); SE Colombia, Ecuador, and Peru, Acre and Pará States, Brazil......................................... 4

4. Cercus in medio-dorsal view with an apical tooth ( Fig. 23 ); Pará State, Brazil........................................ T. divaricata

4´. Cercus in medio-dorsal view lacking an apical tooth (RG Figs. 17 c, 19c); SE Colombia, Ecuador, and Peru, Acre State, Brazil................................................................................................................................................................... 5

5. A medially directed tooth on medial margin at distal 0.65 (RG Fig. 19 c); paraproct in lateral view forming a single lobe (RG Fig. 22 m); SE Colombia, Ecuador, and Peru (RG Fig. 42)........................................................ T. versicolor

5’. No medially directed tooth on medial margin at distal 0.65 (RG Fig. 17 c); paraproct in lateral view divaricate (Fig. Fig. 21 a); Peru and Bolivia (RG Fig. 42), Acre State, Brazil........................................................................ T. corbeti

Female of T. divaricata unique by hind prothoracic lobe with the median lobe provided with two divaricate horns ( Fig. 1 ).

Figures

FIGURES 1 – 12, female thorax dorsal (Figs. 1, 3 – 4) and dorso-lateral (Fig. 2) views, and penis in ectal (above) lateral (below) views of Telebasis (Figs. 5, 12 from Garrison 2009).

FIGURES 13 – 21. male anal appendages of Telebasis, lateral view (Figs. 20, 21 from Garrison 2009).

FIGURES 22 – 30. male anal appendages of Telebasis, lateral view.