Elasmothemis aliciae spec. nov., a new dragonfly from Mexico, Belize and Costa Rica with a description of its larva and a key to the known larvae of the genus (Anisoptera: Libellulidae)

The new sp. and its larva are described and illustrated from specimens collected in Mexico (states of San Luis Potosi and Veracruz), Belize (Toledo distr.) and Costa Rica (Heredia prov.). Holotype 6 and allotype 5 (in copula): Mexico, Veracruz state, Rio La Palma, 25 km N of Catemaco, 28-VIII-1988; deposited at UNAM, Mexico. The sp. is closely related to E. cannacrioides Calv. with which it was formerly confused. Adults of the former are larger than those of the latter. The larva is also easily distinguished from £ cannacrioides by its larger size and differences in the shape of the dorsal protuberances. Notes on biology and distribution are provided and the known larvae of the genus Elasmothemis Westfall are keyed.