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Published: 2023-03-14

The larvae of Cora inca Selys, 1873 and Polythore gigantea (Selys, 1853) from Colombia (Odonata: Polythoridae), with a larval diagnoses of some genera in the family

Instituto de Ecología, A.C. Red de Biodiversidad y Sistemática. Carretera antigua a Coatepec 351, El Haya 91073 Xalapa, Veracruz, MEXICO.
2 Grupo de Entomología Universidad de Antioquia (GEUA), Universidad de Antioquia, Medellín, COLOMBIA.
Odonata Zygoptera damselflies descriptions taxonomy Dept. Risaralda


The larvae of Cora inca Selys, 1873 and Polythore gigantea (Selys, 1853) were found in first and second order forested streams at the Tatamá Natural National Park in the Colombian Western Andes. Their final larval stadia are here described and figured. Cora inca differs from the larvae of C. cyane Selys, 1853 and C. marina Selys, 1868 by a combination of features including presence of an irregular patch of minute, gray scales to each side of the ventral midline on the ventral pad of hypopharynx, paraprocts with five projections, and the position of epiproct and paraproct projections. On the other hand, the larva of P. gigantea differs from the larva of P. spaeteri Burmeister & Börzsöny, 2003 by antennal scape slightly shorter than 3rd antennomere, prementum 0.10x longer than its widest part, and the position of epiproct and paraproct projections. Although most of the larvae in the family Polythoridae are still unknown, here we discuss the main morphological characteristics that help to diagnose some of the genera in this family, presenting a regional taxonomic key that includes the genera Cora Selys, 1853, Euthore Selys, 1859, Miocora Calvert, 1917, and Polythore Calvert, 1917.



  1. Bota-Sierra, C.A., Flórez-V, C., Escobar, F., Sandoval, H.J., Novelo-Gutiérrez, R., Londoño, G.A. & Cordero-Rivera, A. (2021) The importance of tropical mountain forests for the conservation of dragonfly biodiversity: A case from the Colombian Western Andes. International Journal of Odonatology, 24, 233–247.
    Corbet, P.S. (1953) A terminology for the labium of larval Odonata. The Entomologist, 86, 191−196.
    De Marmels, J. (1982) La náyade de Cora cyane Selys, 1853 (Odonata: Polythoridae). Boletín de Entomología de Venezuela, Nueva Serie, 2 (13), 107–110.
    De Marmels, J. (1995) La larva de Euthore fastigiata meridiana Selys, 1879 (Odonata: Polythoridae). Boletín de Entomología de Venezuela, Nueva Serie, 10 (2), 131–134.
    De Marmels, J. (2007) Thirteen new Zygoptera larvae from Venezuela (Calopterygidae, Polythoridae, Pseudostigmatidae, Platystictidae, Protoneuridae, Coenagrionidae). Odonatologica, 36 (1), 27–51.
    Etscher, V., Miller, M.A. & Burmeister E.-G. (2006) The larva of Polythore spaeteri Burmeister & Börzöny, with comparison to other polythorid larvae and molecular species assignment (Zygoptera: Polythoridae). Odonatologica, 35 (2), 127–142.
    Novelo-Gutiérrez, R. & González-Soriano, E. (1985) Descripción de la náyade de Cora marina Selys, 1868 (Odonata: Polythoridae). Folia Entomologica Mexicana, 63, 5–12.
    Paulson, D.R., Schorr, M. & Deliry, C. (2022) World Odonata List. Available from: (Accessed on 10 December 2022)
    Ramírez, A., Altamiranda-Saavedra, M., Gutiérrez-Fonseca, P. & Springer, M. (2011) The neotropical damselfly genus Cora: new larval descriptions and a comparative analysis of larvae of known species (Odonata: Polythoridae). International Journal of Odonatology, 14 (3), 249–256.
    Sánchez-Herrera, M., Beatty, C.D., Nunes, R., Realpe, E., Salazar, C. & Ware, J.L. (2018) A molecular systematic analysis of the Neotropical banner winged damselflies (Polythoridae: Odonata): phylogenetic relationships of Polythoridae. Systematic Entomology, 43, 56–67.
    Sánchez-Herrera, M., Beatty, C.D., Nunes, R., Salazar, C. & Ware, J.L. (2020) An exploration of the complex biogeographical history of the Neotropical banner-wing damselflies (Odonata: Polythoridae). BMC Evolutionary Biology, 20 (74).
    Watson, M.C. (1956) The utilization of mandibular armature in taxonomic studies of anisopterous nymphs. Transactions of the American Entomological Society, 81, 155−205.