Neocordulia (Mesocordulia) pedroi, Costa & Carriço & Santos, 2010

Costa, J. M., Carriço, C. & Santos, T. C., 2010, Neocordulia pedroi sp. nov. (Odonata: Corduliidae) from southeastern Brazil, Zootaxa 2685, pp. 51-56 : 52-54

Neocordulia (Mesocordulia) pedroi sp. nov.

( Figures 1 –8)

Material. Holotype male: BRAZIL, Espírito Santo State, Tapinuã stream, Estação Biológica de Santa Lúcia (19º58’16’’S /40º31’80’’W), Santa Teresa municipality, 14.IX.2008, J.M. Costa, C. Carriço & T. C. Santos leg. (emerged 29.IX.2008).

Etymology. This species is named after the first author's grandson Pedro Martins. Costa Mattos.

Description. Male holotype. Head. Labium dark brown, with long black setae uniformly distributed; mandibles and maxillae dark brown; anteclypeus, postclypeus, antefrons and postfrons light yellow; frons divided by a strongly deep median furrow with flattened facets. Vertex light brown, rounded, with regularly distributed setae. Occipital triangle large, light brown, with concentrated setae. Antennae dark brown, scapus black; ocellus pale amber; rear of head light brown.

Thorax. Prothorax yellowish. Pterothorax light brown, with iridescent metallic green reflections covered with brown and golden yellow setae. Mesepisternum with a longitudinal light brown stripe and green reflections. Legs black, except coxae and trochanter which are yellowish. Tibiae I and II with a prominent ventral keel along distal 0.80; tibia III with ventral keel as long as the tibia. Wings hyaline; venation black; pt light brown; membranule enlarged, white, ending before apex of anal triangle. Wing margin at distal end of anal triangle entire, without a distinct excavation. Anal angle rounded.

Venation (left/right). Antenodals in Fw 13/13; in Hw 9/9; postnodals in Fw 10/10, in Hw 10/10. Arculus proximal to second antenodal. Sectors of arculus not stalked in all wings. All triangles free. One CuP crossvein in Fw, two in Hw. Fw discoidal field parallel sided with two rows of cells except three rows on distal end. Discoidal field in Hw with two rows of cells. Mspl indistinct. RP2 slightly undulate. Rspl distinct with six cells. Anal loop elongate surpassing level of distal angle of triangle, with 14cells. Space between anal loop and triangle with two cells at base. Space between posterior border of anal field and distal end of anal loop with 2–3 rows of cells. Posterior border of anal loop with two cells.

Abdomen. Posterior margin of anterior lamina with medial arched rim bearing a tuft of setae on each lateral ( Fig. 1); inner branch of posterior hamule wider than outer branch, with three small teeth ( Fig. 2); vesica spermalis with one apical flagellum ( Fig. 3); S7–8 moderately widened, depressed dorsoventrally; dorsolateral carinae present on S3–7; sternum of S8 lacking a prominent biconical process (but see discussion below), only with a pilose area ( Fig. 4). S1–10 dark brown. Segment 10 with middorsal keel indistinct, except for a blunt apical tooth. Genital lobe quadrangular; hamule long, surpassing half the height of genital lobe. Cerci ( Figs. 5–7) strongly turning downward (or ventrally) with convergent apexes, longer than S9+10, covered with long setae. Epiproct ( Figs. 7 –8) with distal margin slightly angulate medially with two teeth in dorsal view.

Measurements: Total length (including anal appendages) 56.0; maximum width of head 8.0; total length of thorax 10.0; length of metepisternal stripe 6.0; length of femur I 5.3; II 7.5, III 8.3; tibiae I 6.0, II 7.0, III 8.5; tibial keel I 4.0, II 4.0, III 7.0; length of Fw 38.5, Hw 38.0; maximum width of Hw 15.0; Fw pt length 3.0, Hw 3.0; distance from wing base to nodus 20.0, distance from nodus to wing apex 18.5; total length of abdomen 35.0; length of hamule 1.2; maximum width of hamule 0.1 in lateral view; length of genital lobe 1.5, width of genital lobe 1.0; length of cerci 4.0, length of epiproct 2.0.

Larva ( Figs. 9–14). General shape of body typical of Corduliidae ( Fig. 9). General coloration dark brown. Head ( Figs. 9–10) small, 1.5 times as wide as long, rhomboidal, as wide as thorax in dorsal view; eyes small, with outer margin slightly rounded; dorsal crest covered with short setae, rear of occiput rounded, slightly concave; posterior corner on each side with more than 15 long spatulate setae and many short setae nearer eyes; antennae 7 segmented, first and second dark, segment 6 the longest; labrum rectangular, fringed with long hairs, brownish; mandibular formula ( Figs. 11–12): L1234 0 abd/R1234 y abd; labium long and wide, reaching metacoxae; prementum with 11 setae of varying lengths on each side; ligula triangular; no spines at junction of labial palp with prementum; labial palp ( Fig. 13) triangular with 8 setae, the first very small; movable hook large; distal margin of palp with 7 crenulations, bearing 3–7 spiniform setae; internal and external margins with many setae.

Prothorax rectangular; wings pads parallel, reaching distal margin of S5; legs long, posterior pair longer than abdomen.

Abdomen cylindrical, widest at S5, lacking dorsal hooks except for blunt apical setae on S5–7 ( Fig. 9); short lateral spines vestigial on S8–9; anal appendages triangular ( Fig. 14), acuminate; epiproct lancet-shaped and cerci similar in length and strongly convergent; paraprocts longer than epiproct and cerci.

Measurements. Total length with appendages: 26; Head mediodorsal length: 3; head max.width: 5; prementum length: 6; prementum maximum width 8. Femur I: 5; II: 8; III: 10 Tibia I: 4;II: 5; III: 8. Inner wing pads: 5; external wing pads: 6.Abdomenal length with appendages: 10; length of lateral spines on S8 and S9: 0.25; length of epiproct and cercus: 1.3; paraproct length: 2.3..