Heteragrion ochraceum Hagen, 1862

Vilela, Diogo Silva, Lencioni, Frederico A. A., Bota-Sierra, Cornelio A., Ware, Jessica L. & Bispo, Pitágoras C., 2023, Taxonomic revision of the Neotropical genus Heteragrion Selys, 1862 (Zygoptera: Heteragrionidae): male morphology, new species and illustrated key, Zootaxa 5356 (1), pp. 1-96 : 71

Heteragrion ochraceum Hagen in Selys, 1862

Heteragrion ochraceum: Selys 1862: 22–23 (description of ♁ and ♀ from Rio de Janeiro state; comparison of ♁ with H. beschkii ; Selys states that he did not see the male and could not perform a good comparison with other species);— Williamson 1919: 24–25 (suggests synonymy with H. cinnamomeum , also similarities with H. aurantiacum ; states that the tubercle mentioned by Selys in the ♀ head is absent);— Garrison et al. 2010: 88 (list of Heteragrion species);— Lencioni 2013: 4 (mentions taxonomic problems concerning this name).

Material examined. None.

Known distribution. Brazil (Nova Friburgo, Rio de Janeiro state).

Diagnosis and remarks. Regarding H. ochraceum , it was described by Selys (1862) based on the two sexes, including one male and two females (one of them teneral). According to Williamson (1919), Hagen considered H. cinnamomeum to be a junior synonym of H. ochraceum , though not formalizing this proposition. Additionally, one can observe many similarities between the female assigned as H. ochraceum (depicted by Williamson 1919, Plate IV fig. 19) and the female assigned as H. aurantiacum ( Lencioni 2013, fig. 50b). The main problem is that the type specimens are now incomplete (the male is missing) and impossible to associate with any valid name ( von Ellenrieder & Garrison 2007). However, as we have not studied the types in person, for now we do not consider this name as nomen dubium. Currently, there is not enough taxonomic information on this species to formalize a proper diagnosis. See further discussion under H. cinnamomeum .