Lestes, Leach, 1815

Costa, Janira M., De Souza, Luiz Onofre I. & Muzón, Javier, 2006, Descriptions of three new species of Odonata from Brazil, Zootaxa 1314, pp. 53-68 : 61-62

Key to adult males of Lestes known from Brazil

1. Paraprocts long, reaching end of cerci or slightly shorter ( Fig. 21 ) ............................. 2

1’. Paraprocts short, 2/3 or less than the length of cerci .................................................... 3

2. Internal lamina of cerci, in dorsal view lacking teeth or with teeth small and poorly developed ( Fig. 22 ) ................................................................................. L. bipupillatus

2’. Internal lamina of cerci, in dorsal view with well­developed teeth ( Fig. 23 )................... ........................................................................................................................ L. forficula

3. Distal end of cerci in spiral form ( Fig. 24 ) ......................................................... L. helix

3’. Distal end of cerci not in spiral form ............................................................................ 4

4. Cerci in lateral view, undulate ( Fig. 25 ) ..................................................... L. undulatus

4’. Cerci in lateral view, not undulate ................................................................................ 5

5. Internal lamina of cerci with basal spine ...................................................................... 6

5’. Internal lamina of cerci without basal spine ................................................................ 8

6. Distal end of internal lamina with a larger spine ( Fig. 26 ) ............................ L. minutus

6’. Distal end of internal lamina without spine ( Fig. 27 ) ................................................... 7

7. Latero­ventral carina with a median ventral spot ( Fig. 28 ) .......................... L. jurzitzai

7’. Latero­ventral carina without a median ventral spot ( Fig. 29 ) .................... L. paulistus

8. Medium­ventral groove on venter of thorax with two small black spots ( Fig. 30 ) ........ ................................................................................................................ L. dichrostigma

8’. Medium­ventral groove on venter of thorax without black spots ................................ 9

9. Latero­ventral carina with a long, forked anterior spot ( Fig. 31 ) .................... L. tricolor

9’. Latero­ventral carina with a short, linear anterior spot ............................................... 10

10. Medium­ventral groove on venter of thorax with a blackish stripe ............................ 11

10’. Medium­ventral groove on venter of thorax without a blackish stripe ...................... 12

11. Blackish stripe of medium­ventral groove not exceeding level of basal portion of latero­ventral carina ( Fig. 32 ) .............................................................................. L. auritus

11’. Blackish stripe of medium­ventral groove reaching distal end of the groove ( Fig. 33 ). ......................................................................................................................... L. falcifer

12. Latero­ventral carina with triangular black spot at posteriodistal end ( Fig 34 ) L. pictus

12’. Latero­ventral carina without triangular black spot at posteriodistal end ................. 13

13. Latero­ventral carina with a median ventral black spot ( Fig.35 ) ........ L. quadristriatus

13’. Latero­ventral carina without a median ventral spot ( Fig. 36 ) .................. L. fernandoi

Figures

FIGURES 21–27. Lestes, male anal appendages. 21, L.bipupillatus, lateral view; 22, L. bipupillatus, dorsal view; 23, L. forficula, dorsal view; 24, L. helix, lateral view; 25, L. undulatus, lateral view; 26, L. minutus, dorsal view; 27, L. jurzitzai, dorsal view. FIGURES 28–36. Lestes, pterothorax colour pattern, ventral view. 28, L. jurzitzai; 29, L. paulistus; 30, L. dichrostigma; 31, L. tricolor; 32, L. auritus; 33, L. falcifer; 34, L. pictus; 35, L. quadristriatus; 36, L. fernandoi.sp. nov.