Heteragrion luizfelipei Machado, 2006

(Figs. 46a–f)

[Key locator: Key to Group A species, couplet 13’]

Heteragrion luizfelipei: Machado 2006: 1062–1065 (description and diagnosis of ♁ and ♀; comparison with H. gracile and H. mantiqueirae; figs. 2, 5–6, 9–10, 13–14);— Garrison et al. 2010: 88 (list of Heteragrion species);— Lencioni 2013: 10–11 (information on types, distribution, diagnosis; comparison with H. beschkii and H. gracile; figs. 18, 31d–f, 43d–g, 47e–f, 52a–b, 70);— Renner et al. 2016: 3–5 (first record to Rio Grande do Sul state; fig. 3b);— Dalzochio et al. 2018: 7 (list of species from Rio Grande do Sul; misspelled as “ luisfelipei ”).

Material examined. 1♁ (HOLOTYPE) BRAZIL, Santa Catarina state, Urubuci, 15.i.2005, (1300m asl), P.A. Machado & M.B. Machado leg., ABMM; 1♁ (PARATYPE) same data, but 12.1.2001, P.A. Machado leg., ABMM (right cercus missing, left cercus broken at 1/2); 1♁ Seara (formerly Nova Teutonia), 27.xii.1939, F. Plaumann leg., FAAL .

Known distribution. Brazil (states of Paraná, Santa Catarina and Rio Grande do Sul).

Diagnosis and remarks. The following character combination distinguishes this species from the remainder of Group A species: ML ridge short, bearing strong teeth (Fig. 46c), with an additional ridge forming a hollow space posteriorly (Figs. 46e–f), unique in Heteragrion; ML apex ‘W’ shaped, bilobate (Figs. 46c–f).