Heteragrion flavovittatum Selys, 1862

(Figs. 34a–e)

[Key locator: Key to Group A species, couplet 27 (26)]

Heteragrion flavovittatum: Selys 1862: 18–19 (description of ♁ and ♀ from Minas Gerais state, Brazil; final remark: “distinct from the others [ Heteragrion species] by its robust structure, its shorter abdomen, the front of the thorax blackish with a wide yellow humeral stripe”);— Selys 1886: 56 (species diagnosis);— Williamson 1919: 15 (key to species, ♁ in couplet b1, ♀ in couplet a1; discussion of MCZ specimens illustration of head of ♁ and ♀; ♁ appendages in dorsal and lateral views, ♁ prothorax in dorsal view; figs. 12–13, 119–120, 133);— Machado 1988: 273 (comparison with H. petiense);— Lencioni 2005: 131 (description and distribution, illustration of ♁ syntype appendages in dorsal and lateral view, habitus and thorax in lateral view; figs. 80a–c);— Machado & Bedê 2006: 50–52 (differences from H. muryense, H. petiense, H. ovatum and H. tiradentense);— von Ellenrieder & Garrison 2007: 6 (mention and illustration of ♁ appendages; fig. 2e);— Garrison et al. 2010: 88, 91 (list, illustration of wings and appendages in mediodorsal view; figs. 374, 394);— Lencioni 2013: 9 (information on types, synonymic list, distribution, remarks; figs. 15, 34a–c, 46a–c, 48e–f, 54a–b, 71);— Lencioni 2017: 143–144 (general taxonomic information; distribution; figs. 67–68).

Material examined. 1♁ BRAZIL, Minas Gerais state, Jaboticatubas, Serra do Cipó (km. 128), 31.x.1966, N. Santos, J. Machado & J. Martins leg., FAAL .

Known distribution. Brazil (Southern-Central Minas Gerais state).

Diagnosis and remarks. This is the type species of the genus, designated by Selys (1862). It is not a common species, known by few individuals and assessed as Vulnerable by the IUCN Red List, as its known localities are threatened by the loss of Atlantic Forest (von Ellenrieder 2020). The following character combination distinguishes this species from the remainder of Group A species: extensive dark areas on head and pterothorax (Figs. 34a–b); upper plate small, slightly concave at its middle, bearing a posterior row of small teeth, not centered (Figs. 34c–e); ML apex rounded (Figs. 34c–e).