Hypoxys triangularis (Dallas, 1851)
(Fig. 9, 19E–F, 22— Nunes et al. (2020); 6D, 7A, 8A, 9A, 12)
Edessa triangularis Dallas, 1851: 320 (original description).
Edessa triangularis Walker, 1868: 425; Stål, 1872: 60; Lethierry & Severin, 1893: 195 (catalog); Kirkaldy, 1909: 165 (catalog)
Edessa scabriventris Stål, 1859: 231; Stål, 1860: 28; Walker, 1868: 429; Stål, 1872: 56; Lethierry & Severin, 1893: 194 (catalog); Kirkaldy, 1909: 164 (catalog); Silva et al. 2018: 424 (checklist)
Edessa leprosula Breddin, 1904a: 144; Bergroth, 1908: 179; Kirkaldy, 1909: 159 (catalog)
Hypoxys triangularis (Dallas, 1851) Nunes et al. (2020): 420 (diagnosis and distribution).
Diagnosis. See Nunes et al. (2020). Characteristic added here: Male genitalia. Dorsal surface with spot extending about ¼ of the length of the pygophore (9A— Nunes et al. (2020)). Inner wall with well-swollen area attached to dorsal rim (Fig. 8A, black arrow). Phallus (Fig. 7A). Vesica tapering dorsally in lateral view. Phallotheca curved. Female genitalia. Pars intermedialis subcylindrical medially (Fig. 6D). Capsula seminalis with three thick projections: one projection half the length of the others, the other two projections with half of the length of pars intermedialis (Fig. 6D).
Distribution (Fig. 12): FRENCH GUIANA; BRAZIL: Pernambuco, Bahia, Alagoas, Espírito Santo, Rio de Janeiro, Paraná, Santa Catarina, Rio Grande do Sul.
Comments. The H. triangularis can be separated from the other species of the H. triangularis group by posterior stripe of pronotum reddish brown and body ventrally with large number of small yellow calli.