Key to differentiate the third to fifth nymphal instars of D. (D.) mourei and Notozulia entreriana (See Foieri et al. (2016) for a complete description of N. entreriana nymphs) 1. Metatibia with 6 apical spines...................................................... third instar D. (D.) mourei - Metatibia with 7 or more apical spines.....................................................................2 2. Metatibia with 7 apical spines....................................................... third instar N. entreriana - Metatibia with 9 or more apical spines.....................................................................3 3. Metatibia with 9 apical spines and 5 in basal tarsomere.................................. fourth instar N. entreriana - Metatibia with 11 or more apical spines and 6 or more in basal tarsomere.......................................... 4 4. Metatibia with 11 apical spines and 6 in basal tarsomere................................ fourth instar D. (D.) mourei - Metatibia with 1 or 2 lateral spines........................................................................6 5. Metatibia 1 lateral spine and 13 apical black-tipped spines. First flagelomere with few celoconic sensilla and 2 single trichoid sensilla......................................................................... fifth instar D. (D.) mourei - Metatibia whit 2 lateral spine and 10–13 apical black-tipped spines. First flagelomere with 11 celoconic sensilla and 1 apical single trichoid sensillu.............................................................. fifth instar N. entreriana

Published as part of Foieri, Alvaro, Marino De Remes Lenicov, Ana M. & Virla, Eduardo G., 2016, Description of the immature stages and new host plant records of Deois (Deois) mourei (Berg) (Hemiptera: Cercopidae), a species newly recorded from Argentina and Paraguay, pp. 419-428 in Zootaxa 4161 (3) on page 425, DOI: 10.11646/zootaxa.4161.3.9, http://zenodo.org/record/256852