Heteragrion eboratum Donnelly, 1965

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 : 47

Heteragrion eboratum Donnelly, 1965

( Figs. 31a–c )

[Key locator: Key to Group B species, couplet 18 (14’)]

Heteragrion eboratum: Donnelly 1965: 96–100 (description and diagnosis of ♁ and ♀ from Guatemala; comparison with H. majus ; figs. 1–6);— Paulson 1981: 304 (comparison of coloration patterns with other Heteragrion species);— Dunkle 1988: 44 (list of species from Honduras);— Donnelly 1989: 427 (among specimens collected in Honduras);— Garrison et al, 2010: 88 (list of Heteragrion species).

Material examined. 1♁ HONDURAS, Comayagua, 16 km SW of Siguatepeque , 22.v.1972, (ca. 1600m asl), E.W. Stiles leg., FAAL .

Known distribution. Honduras and Guatemala.

Diagnosis and remarks. Regarding cercus morphology, H. eboratum is close to H. chrysops , H. valgum , H. calendulum and H. alienum , 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 subequal in length with AP, ML the shortest portion; ridge above ML short, bearing teeth on a single row ( Figs. 31b–c ); ML apex acute ( Figs. 31b–c ); AP with a longitudinal depression ( Figs. 31b–c ). Additionally, it is also worth mentioning that its ivory-white face contrasts with a mostly black thorax. According to the IUCN Red List, H. eboratum is considered Near Threatened as it occurs in isolated populations and its preferred habitats are under threat of deforestation ( Paulson 2009).

Figures

FIGURE 31. Heteragrion eboratum: (a) anterior view of head; (b) dorsal view of anal appendages; (c) mediodorsal view of cercus; (a) adapted from the original drawings by Donnelly (1965). AP: apical portion; ML: medial lobe.