Platystigma

Machado, Angelo B. M. & Soldati Lacerda, Déborah S., 2017, Revalidation of Platystigma Kennedy, 1920, with a synopsis of the quadratum species group and the description of three new species (Odonata: Pseudostigmatidae), Zootaxa 4242 (3), pp. 493-516 : 496-497

Key to males of Platystigma

(male of P. pronoti unknown)

1 Hw with black or dark brown band. Species known only from Colombia, Peru and Venezuela............... jocaste group

- Hw without black or dark brown band. Species of Northern and Southeastern Brazil, Bolivia, Ecuador and Peru ( Figs. 25, 27 , 31, 32 , 35 )........................................................................... quadratum group ...2

2 Border of Hw with subapical elevation ( Fig. 25 ).............................................................3

- Border of Hw without subapical elevation ( Figs. 27 , 31, 32 , 35 )............................................... 5

3 Fw with pale apical area....................................................................... P. martinezi

- Fw without pale apical area............................................................................ 4

4 Hw with pale apical area........................................................................ P. buckleyi

- Hw without pale apical area ( Fig. 25 ).............................................................. P. astictum

5 Small species (Hw 32, abdomen 48). Cleft of anterior lamina with elongated medial border sclerotized apically ( Fig. 40 ). Penis segment 3 subrectangular ( Fig. 48 )............................................................... P. minimum

- Larger species (Hw 40–48, abdomen 52–65). Cleft of anterior lamina without elongated medial border. Penis segment 3 sub- quadrate ( Figs. 46, 50 )................................................................................. 6

6 Pale apical area present in Fw and Hw ( Fig. 31 )..................................................... P. humaita

- Pale apical area present only in Hw ( Fig. 32 )...................................................... P. quadratum

Figures

FIGURES 25 – 28. Wings in P. astictum male, Espírito Santo, Hw non saturated (25), saturated (26); female, Itatiaia, Rio de Janeiro, Hw non saturated (27) saturated (28).

FIGURES 29 – 32. P. minimum, sp. nov. male, holotype, Fw non saturated (29), saturated (30). P. humaita sp. nov. male, holotype, Hw non saturated (31). P. quadratum sp. nov. male, holotype, Hw non saturated (32).

FIGURES 33 – 36. P. pronoti reproduced from Machado & Lacerda (2016), female holotype, Fw non saturated (33), saturated (34), Hw non saturated (35), saturated (36).

FIGURES 37 – 41. Genitalia of second segment in P. astictum, Tinguá, Rio de Janeiro (37); P. martinezi, Bolívia, Santa Cruz (38); P. humaita sp. nov., holotype (39); P. minimum sp. nov., holotype (40); P. quadratum sp. nov., holotype (41).

FIGURES 42 – 51. Penis of P. astictum, Tinguá, Rio de Janeiro, in ectal (42) and lateral (43) views; P. martinezi, Bolívia, Santa Cruz, in ectal (44) and lateral (45) views. P. humaita sp. nov. in ectal (46) and lateral (47) views; P. minimum sp. nov. in ectal (48) and lateral (49) views; P. quadratum sp. nov. in ectal (50) and lateral views (51).