Heteragrion chrysops Hagen in Selys, 1862

(Figs. 23a–e)

[Key locator: Key to Group B species, couplet 18’]

Heteragrion chrysops: Selys 1862: 26–27 (description of ♁ from Porto-Cabello, Venezuela; comparison with H. aurantiacum);— Selys 1886: 62 (diagnosis from other congeners);— Calvert 1901: 62–63 (fig. 7);— Calvert 1907: 357 (recorded countries: Mexico, Guatemala, Honduras, Costa Rica, Panama and Venezuela);— Ris 1918: 88 (synonymic list);— Williamson 1919: 34 (key to species, ♁ in couplet d1; remarks on the type specimen, with broken head; wing characters; comparison with H. alienum; figs. 40, 90, 127–128, 154);— Paulson 1981: 303–304 (comparison of coloration patterns with other Heteragrion species);— D’Andrea & Carfi 1988: 325–326 (study on spines present on wings; figs. 1c, 5a);— De Marmels 1990: 335 (species recorded in Venezuela);— Hartung 2002: 189 (listed among species present on the type locality of H. palmichale);— De Marmels 2008: 154 (recorded north of the Orinoco River, Venezuela);— Garrison et al. 2010: 88 (list of Heteragrion species);— Molinar et al. 2015: 87 (list of species from Panama).

Material examined. 1♁ VENEZUELA, Chirgua, Carabobo, 4.ix.1955, J. Rácenis leg., ABMM ; 1♁ with no data on the labels, INPA.

Known distribution. Costa Rica, Guatemala, Honduras, Mexico, Panama and Venezuela.

Diagnosis and remarks. Regarding cercus morphology, H. chrysops is close to H. alienum, H. valgum, H. calendulum, and H. eboratum, with which it shares the MP ridge bearing only small teeth and not partially covering ML. This species can be separated from these and the remainder of Group B species by the following character combination: BP compact (Fig. 23e), subequal in length with AP (Fig. 23c); ridge above ML bearing very small denticles (Figs. 23c–d); ML apex blunt (Figs. 23c–d).