Leptagrion Selys 1876

Key to females of Leptagrion from southeastern Brazil

1. Posterior lobe of prothorax with distal margin shorter than proximal margin (Fig. 5A)............................... 2

1’. Posterior lobe of prothorax with distal margin almost size than proximal margin (Fig. 5B)............................ 4

2. Pterostigma in hind wing rectangular (Fig. 6A)................................................... L. andromache

2’. Pterostigma in fore and hind wing rhomboid or nearly so (Fig. 6B).............................................. 3

3. Posterior lobe of prothorax with incurved lateral margins (Fig. 7A).................................... L. bocainense

3’. Posterior lobe of prothorax with straight lateral margins (Fig. 7B)..................................... L. vriesianum

4. Ovipositor valves surpassing posterior margin of S10, without post-mortem effects (Fig. 8A)......................... 5

4’. Ovipositor valves not surpassing distal margin of S10, without post-mortem effects (Fig. 8B)......................... 6

5. Pterothorax with interpleural suture long and distinct (Fig. 9A).......................................... L. acutum

5’. Pterothorax with interpleural suture short and indistinct (Fig. 9B)...................................... L. porrectum

6. Sternum 8 not surpassing distal margin of tergum 8, without post-mortem effects (Fig. 10A)................. L. elongatum

6’. Sternum 8 surpassing distal margin of tergum 8, without post-mortem effects (Fig. 10B)............................. 7

7. Anterior projection in the prothoracic lobe absent, in lateral view (Fig. 11A)............................ L. perlongum

7’. Anterior projection in the prothoracic lobe present, in lateral view (Fig. 11B)............................. L. macrurum