Heteragrion chrysops 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 : 37

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 ).

Figures

FIGURE 23. Heteragrion chrysops: (a) anterior view of head; (b) lateral view of pterothorax; (c–d) mediodorsal view of cercus; (e) closeup of cercus BP in medial view. BP: basal portion; ML: medial lobe.