The larval and pupal stages of Anopheles (Nyssorhynchus) rondoni (Neiva and
Pinto) (Albimanus Section) are fully described and illustrated for the
first time. The larval stage is similar to An. (Nys.) strodei Root. It can
be recognized by the following combination of characters: clypeal index,
1.6-2.9; single, aciculate setae 2,3-C; seta 3-C 0.5-0.7 the length of 2-C;
setae 1,2-P rarely sharing a common tubercle; seta 1-P with narrow
leaflets. The pupal stage is distinguished from other Nyssorhynchus by
having setae 1-IV-VII and 5-V-VII branched. Only minor variation was found
in setal counts between specimens from Peixoto de Azevedo, State of Mato
Grosso and Bocaina, State of Sao Paulo, Brazil.
