Neoneura

Souza, Luiz Onofre Irineu De, Pepinelli, Mateus & Neiss, Ulisses Gaspar, 2012, The larva of Neoneura ethela Williamson, 1917 (Odonata: Protoneuridae), Zootaxa 3318, pp. 63-67 : 67

Key to known South American larvae of Neoneura

1 Two pairs of premental setae................................................................ Neoneura kiautai

- One pair of premental setae.............................................................................. 2

2 S8–10 armed with spines on distal border; ventral border of lateral gill armed with a row of about 24 spines. Neoneura ethela

- S5 or 6–10 armed with spines on distal border (including lateral carina of segments mentioned); ventral border of lateral gill armed with less than 20 spines...........................................................................3

3 Pronotum with lateral projection rounded; lateral gills as long as abdomen; ventral border of lateral gill armed with a row of 19 spines; posterior margin of prementum triangular; ovipositor armed with three spines on ventral margin and surpassing the end of S10.................................................................................. Neoneura joana

- Pronotum with lateral projection sharp, lateral gills as long as S4–10 together; ventral border of lateral gill armed with a row of 11–12 spines; posterior margin of prementum rounded; ovipositor only with hair-like setae on ventral margin and reaching the end of S10............................................................................ Neoneura fulvicollis