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Type: Article
Published: 2019-06-28
Page range: 219–229
Abstract views: 52
PDF downloaded: 2

Descriptions of the larvae of Acanthagrion speculum and A. trilobatum from Costa Rica (Odonata: Coenagrionidae)

Sistema de Estudios de Posgrado en Biología, Universidad de Costa Rica, San Pedro Montes de Oca, 2060 San José, Costa Rica.
Museo de Zoología, Escuela de Biología & CIMAR, Universidad de Costa Rica, San Pedro Montes de Oca, Costa Rica.
Instituto de Ecología, A.C. Red de Biodiversidad y Sistemática. Carretera Antigua a Coatepec 351, El Haya, 91070 Xalapa, Veracruz, MEXICO
Odonata Neotropical Region Zygoptera damselflies Acanthagrion taxonomy


Description of the final instar of Acanthagrion trilobatum Leonard, 1977 and A. speculum Garrison, 1985 is based on associated specimens from San José, Turrialba and Sarapiquí Provinces, Costa Rica. Illustrations of these two species and a comparative table summarizing the main features of all larvae of Acanthagrion described to date are provided. The larva of A. trilobatum is distinguished from that of A. speculum by shorter lateral caudal lamellae (length 7 mm vs. 8.2 mm), lateral carina of abdominal segments 2–8 with spiniform setae on posterior 1/3 (lateral carinae of only S6–8 with spiniform setae in A. speculum), and male gonapophyses incurved (straight in A. speculum).



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