A new species of Cryptonympha Lugo-Ortiz McCafferty (Ephemeroptera, Baetidae) from Cerro Duida (Venezuela)

Zootaxa. 2018 Feb 5;4377(4):587-592. doi: 10.11646/zootaxa.4377.4.9.

Abstract

The genus Cryptonympha includes three species: C. copiosa Lugo-Ortiz McCafferty, 1998; C. dasilvai Salles Francischetti, 2004 and C. genevievae Thomas, Manchon Glémet, 2013, known only from the nymphal stage. A description of the nymph of a fourth representative, Cryptonympha tracheata sp. n. is provided here, based on material collected in a blackwater stream on the slopes of the Cerro Duida mountain in south-western Venezuela. The nymph of the new species can be easily distinguished from the other species of the genus by very long tracheal gills II-VII, 2.5 times the length of each tergum, gill I small, nearly half length of gill IV and by posterior margin of terga with rounded spines. A complete description of the new species and a key for nymphs of all known Cryptonympha species are provided.

Keywords: Ephemeroptera, Baetidae.

MeSH terms

  • Animals
  • Ephemeroptera*
  • Nymph
  • Venezuela