Perithemis Hagen 1861
Creators: name: Costa, Janira M.
name: De Souza, Luiz Onofre I.
name: Muzón, Javier
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Libellulidae
Perithemis

description: Key to adult males of the species of Perithemis known from Brazil
(Modified and updated version of keys from Needhan at al. (2000) and von Ellenrieder and Muzón (1999))
1. Tip of hamuli almost at level of ventral margin (Fig. 44) ............................................. 2
1’. Tip of hamuli at nearly 0.40 from ventral margin ......................................................... 6
2. Pterothorax with two lateral dark strips well defined (Fig. 45); genital ligula with length of sclerotized distal portion of fourth segment less than half the length of the segment, margins parallel basal portion subquatrate ............................................ P. lais
2’. Pterothorax with one well defined lateral dark stripe, the second lateral stripe poorly defined. Vesica spermalis with length of sclerotized distal portion of fourth segment half the length of that segment, margins not parallel basal portion subquatrate or trapezoidal .................................................................................................................... 3
3. Posterior region of head black; first segment of vesica spermalis rounded or trapezoidal.......................................................................................................................................4
3’. Posterior region of head dark brown or reddish; first segment of vesica spermalis sub­quadrate (Figs. 46–47) ............................................................................... P. icteroptera
4. Abdomen without narrow oblique dark stripes on segments 4–9 ................................ 5
4’. Abdomen with complete blackish longitudinal bands (Fig. 48) ......................... P. thais
5. Wings rich golden yellow .............................................................................. P. cornelia
5’. Wings red­orange .............................................................................................. P. rubita
6. All triangles and subtriangles free (Fig. 49); first segment of vesica spermalis trapezoidal (Figs. 50–51) ............................................................................................. P. mooma
6’. At least one of triangles and subtriangles crossed. First segment of vesica spermalis ovoid or rounded...........................................................................................................7
7. Legs dark brown; subtriangles in forewing with two or three cells; abdomen robust .... ............................................................................................................................. P. bella
7’. Legs ochraceous yellow. Abdomen slender .................................................................. 8
8. Triangles in both wings free, subtriangles in forewing with two cells; wings broad (sensu Ris, 1930); first segment of vesica spermalis ovoid (Figs. 52–53) ....... P. electra
8’. Triangles in both wings crossed with three cells; wing narrow (sensu Ris, 1930); first segment of vesica spermalis rounded (Figs. 37–38) .................................... P. capixaba
description: Published as part of Costa, Janira M., De Souza, Luiz Onofre I. & Muzón, Javier, 2006, Descriptions of three new species of Odonata from Brazil, pp. 53-68 in Zootaxa 1314 on pages 65-66, DOI: 10.11646/zootaxa.1314.1.4, http://zenodo.org/record/173923