FIGURES 90–94 in Oreiallagma gen. nov. with a redefinition of Cyanallagma Kennedy 1920 and Mesamphiagrion Kennedy 1920, and the description of M. dunklei sp. nov. and M. ecuatoriale sp. nov. from Ecuador (Odonata: Coenagrionidae)

FIGURES 90–94. Male caudal appendages, (a) lateral view, (b) posterior view. (90) Oreiallagma acutum, lectotype, Bolivia, Río Zongo; (91) O. thelkterion, paratype, Venezuela, Monte Zerpa; (92) O. prothoracicum, holotype, Ecuador, Intaj; (93) O. quadricolor, holotype, Peru, Santa Ana; (94) O. oreas, holotype, Colombia, Monte Socorro. d. p.: dorsal process; v. ap. p.: ventro-apical process; v-b. p.: ventro-basal process; scal. cu.: scalariform-like cuticle.