Rodríguez José Sebastián, Molineri Carlos
Instituto de Biodiversidad Neotropical, CONICET (Argentine Council of Scientific Research), Facultad de Ciencias Naturales e IML, Universidad Nacional de Tucumán, M. Lillo 205, 4000, San Miguel de Tucumán, Argentina.; Email:
Zootaxa. 2014 Nov 14;3884(3):267-74. doi: 10.11646/zootaxa.3884.3.5.
The final instar larva of Rhionaeschna vigintipunctata (Ris) (Odonata, Aeshnidae) is described for the first time. The description is based on a series of mature female larvae collected in Tucumán (NW Argentina) and reared to imago. It shares the U-shaped distal excision of epiproct with other larvae of the Marmaraeschna group (only R. pallipes and R. brevicercia known from this stage); but the minute tubercle at each side of the cleft of ligula is absent. Other characters unique to R. vigintipunctata include: open ligula (vs. closed in other "Marmaraeschna"), and mandibular formula. A table to distinguish the larvae of the three species of "Marmaraeschna" and biological and distributional data of R. vigintipunctata are included.
