The nymph of Hermanellopsis arsia Savage & Peters, 1983 (Ephemeroptera: Leptophlebiidae) from Brazilian Northeastern Region
Hermanellopsis Demoulin, 1955 is a genus of Leptophlebiidae known from adults of both sexes and is represented solely by two species, both from South America: Hermanellopsis arsia Savage & Peters, 1983, described only from male subimago; and H. incertans (Spieth, 1943) described from male imago and female subimago. Edmunds et al. (1976) provided the generic description for the supposed nymph of Hermanellopsis. However, Savage & Peters (1983) revised the genus, and study of related genera raised doubt about the identity of the proposed nymph. Thus, the nymph of Hermanellopsis has remained unknown until now.
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