First report and new species of the genus Apobaetis (Ephemeroptera: Baetidae) from South America

Abstract

Apobaetis (Ephemeroptera: Baetidae) is reviewed and newly reported from South America. Apobaetis signifer sp. n., is described from larvae from Brazil and Paraguay. Larvae of the new species are distinguished by short, two‐segmented maxillary palps and abdominal coloration. The South American species is apparently plesiotypic relative to known Nearctic congeners, suggesting a Neotropical center of origin for Apobaetis.

Keywords:

• Ephemeroptera
• Baetidae
• Apobaetis signifer
• South America