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 : 497

Key to females of Platystigma

(females of P. buckleyi , P. humaita , P. minimum and P. quadratum 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. 27 , 35 )................................................................................... quadratum group... 2

2 Posterior prothoracic lobe with lateral and median portions clearly separated by deep incision ( Fig. 12 ).......... P. pronoti

- Posterior prothoracic lobe with lateral and median portions not clearly separated ( Fig. 9 )........................... 3

3 Ventral border of lateral valve of ovipositor with a row of well-developed teeth increasing in size distad ( Fig. 65 )..... P. sp.

- Ventral border of lateral valve of ovipositor with a row of very small denticles of equal sizes.......................... 4

4 Row of denticles originating directly from ventral border of lateral valve of ovipositor ( Fig. 63 )............... P. astictum

- Row of denticles originating from small, narrow, sclerotized plate on ventral border of lateral valve of ovipositor ( Fig. 64 ).............................................................................................. P. martinezi

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

FIGURES 8 – 13. Prothorax in dorsal view: in P. astictum male, Itatiaia, Rio de Janeiro (8); P. martinezi female, holotype, Bolívia, Santa Cruz (9); P. humaita sp. nov. male, holotype, Porto Acre (10); P. minimum sp. nov. male, holotype (11); P. pronoti female, holotype (12); P. quadratum sp. nov. male, holotype (13).

FIGURES 62 – 65. Abdomen S 8 – 10 in lateral view: in P. astictum, São Paulo, Jacareí (62). Ovipositor in lateral view: in P. astictum, Rio de Janeiro, Tinguá (63); P. martinezi, holotype (64); P. sp. (65).