Telebasis myrianae, Angelo B. M. Machado, 2010

Angelo B. M. Machado, 2010, Seven new species of Telebasis from Brazil (Odonata: Coenagrionidae), Zootaxa 2384, pp. 53-64 : 58-59

Telebasis myrianae sp. nov.

Figures 3, 9 , 16 , 25

Etymology: Named myrianae in honor of my good friend the biologist Myrian Morato Duarte who for 17 years has been illustrating my papers on dragonflies.

Type specimens. Holotype ♂ and allotype ♀, BRAZIL, Bahia State, Itamaraju, 17° 4' S, 39° 32' W, 61m, ii-1988, L.F. Reys and J. Bento leg, 5 ♂ and 1 ♀ paratypes, same data as holotype. Holotype, allotype and paratypes deposited in ABMM; one ♂ and a ♀ paratype deposited in RWG and one ♂ in FAAL.

Description. Male holotype. Head. Labium yellow, genae base of mandibles and anteclypeus brown, labrum red, postclypeus and antefrons reddish brown, upper part of head matt black with reddish brown area in front of median ocellus, at antennifer, scape and pedicel and at the diagonal band between lateral ocellus and antennal base; rear of head black. Thorax. Prothorax orange red, laterally yellowish orange; pterothorax with mesepisternum brownish orange with a dark metallic green stripe occupying medial 0.50, mesepimeron and metepisternum orange yellow, metepimeron yellowish orange. Legs brownish orange. Wings flavescent, Px in FW 12 in HW 10. R3 arising at Px 5 in both wings; anal vein separating from the wing margin at CuP in both wings; pterostigma yellowish brown, surmounting one cell. Abdomen. S1–S2 dorsally red, dorsolaterally orange yellow. S3–S10 greyish; cercus dark brown, paraprocts greyish red.

Structural characters. Hind prothoracic lobe smoothly rounded, cercus in lateral view ( Fig. 15 ) subequal to S10, 1.5 longer than paraproct with no visible ventral tooth; in medio-dorsal view with a robust mediallydirected conical tooth ( Fig. 25 ). Paraproct in lateral view truncate ( Fig. 15 ), in medio-dorsal view ( Fig. 25 ) concave. Penis ( Fig. 9 ) with terminal and inner folds well-developed, a very long digitiform proximal lateral lobe and a smaller distal one both directed ventro-anteriorly; apical segment in dorsal view strongly dilated distally.

Dimensions. Abdomen 28.9, HW 19.3

Description. Female allotype. Head. Labium, genae, base of mandibles, anteclypeus and antefrons orange yellow. Labrum orange. Postclypeus and upper part of head in front of median ocellus orange red, remainder black with orange red diagonal band; rear of head black. Thorax. Prothorax with proepimeron orange red with a black spot at middle part of hind prothoracic lobe, propleuron orange; mesepisternum with a black metallic stripe including middorsal carina on medial 0.50, remainder orange yellow; mesepimeron and metapleuron yellow. Legs brownish yellow. Wings slightly flavescent, Px in FW 13, in HW 10, R3 arising near Px 6 in both wings; anal vein separating from wing margin slightly proximal to CuP in both wings, pterostigma yellowish brown surmounting one cell. Abdomen. S1–S10 dorsally black, laterally yellow from S1–S5, brownish yellow on S6–S10.

Structural characters. Hind prothoracic lobe with median lobe smoothly rounded, having at its base two anteriorly directed horns, medially approximate with apices divergent ( Fig. 3 ).

Dimensions. Abdomen 24.6, HW 17.8

Remarks. By possession of flavescent wings, male keys to Key M2 ( Garrison 2009) but is unique by having the penis with a pair of long digitiform proximal lateral lobes followed distally by a smaller pair ( Fig. 9 ). Overall small size and cercal morphology ( Figs. 16 , 25 ) similar to that of T. bickorum (RG Fig. 16 g) but penis ( Fig. 9 ) lacks the long, divaricate apical lobes characteristic of T. bickorum ( Fig. 5 ). Female keys to F-7, couplet 5,' in Garrison (2009) from which the following couplet may be inserted:

5.5. Prothoracic horns with bases approximate basally ( Fig. 3 ), Brazil, Bahia State......................................... T. myrianae

5.5´. Prothoracic horns with bases not approximate basally (RG Figs. 5 d; 6f, l, o, p; 7d; 8f).............................................6

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.