(Figs. 59a–c)
[Key locator: Key to Group B species, couplet 10’]
Heteragrion rubrifulvum: Donnelly 1992: 55, 57–59 (key to species of Heteragrion from Central Panama, ♁ in couplet 2’; description and diagnosis of ♁; comparison with H. erythrogastrum and H. albifrons; 5.2, 5.12, 5.17);— Garrison et al. 2010: 88 (list of Heteragrion species);— Molinar et al. 2015: 87 (list of species from Panama).
Material examined. Examined through original description and holotype images (holotype housed at MCZ).
Known distribution. Central Panama.
Diagnosis and remarks. This species is assessed as Data Deficient in the IUCN Red List, as it is a poorly known taxon, known from only the type locality, pending additional collections to determine its current conservation status (González-Soriano & Guzmán Ojeda 2021a). Donnelly (1992) stated that this species “stands quite alone in the genus for near absence of black markings”. The following character combination distinguishes this species from the remainder of Group B species: head red, remainder of body pale yellow; ridge above ML straight, its apex sclerotized (Fig. 59c); ML with acute apex (Fig. 59c); AP with a longitudinal depression (Fig. 59c).