By Charles W. Heckman

This paintings used to be all started to supply keys to the aquatic insect species recognized from Brazil. the unique aim was once to incorporate all genera identified from South the US and all species from Brazil, yet for many teams, the scope was once improved to surround all species in South the United States, and, often times, to incorporate terrestrial species of orders comprising either terrestrial and aquatic taxa. In no case is a taxonomic revision of any team undertaken, even if suggestions for such revisions are incorporated the place applicable, and possible synonymy of nominal species nonetheless taken care of as legitimate within the literature is famous. varied ways should be hired based on the taxon being handled. For phylogenetic teams encompassing overwhelmingly or completely aquatic species, corresponding to the orders Plecoptera and Ephemeroptera or the households Dytiscidae and Culicidae, keys are supplied to differentiate all genera and species recognized to happen in South the US. An attempt has been made to incorporate each identifiable species in order that the person ofthe key can be certain with average walk in the park even if his specimen belongs to a species that has already been defined or if it is person who isn't really but identified to technological know-how. the place possible, entire keys might be ready for teams containing either aquatic and terrestrial species that don't surround an awfully huge quantity ofspecies. This has already been performed for the order Collembola.

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Additional resources for Encyclopedia of South American Aquatic Insects: Ephemeroptera: Illustrated Keys to Known Families, Genera, and Species in South America

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1. The color is rather light. The last segment of the gonostylus is only twice as long as wide (Fig. 34) . . . . Euthyplocia hecuba (Hagen, 1861) (Mexico, Central America, Colombia, Ecuador, Peru, Venezuela, Argentina, Brazil). - The color is dark. The last segment of the gonostylus is four times as long as wide (Fig. 37). .... .. ..... ... Euthyplocia haenschi Ulmer, 1942 (Ecuador). 48 Fig. 37 The male genitalia of Euthyplocia haenschi in ventral view (left) with enlargements ofthe penis in lateral (upper right) and ventral view (lower right).

Ephoron Williamson, 1802 The only species reported from South America is Ephoron umbrata (Hagen, 1888), which inhabits Brazil. However, it is not known whether this is really a species of Ephoron, and Dominguez et al. (2001) consider it a nomen dubium. - Marginal vein lets absent (Fig. 3 Fig. 41 Tortopus igaranus: fore and hind wings (left) and the fore, middle , and hind legs (lower right, left to right). 52 3. The middle and hind legs are considerably reduced with all parts beyond the trochanters missing ; they are broadened and fan-like.

Right), a genus not found in SouthAmerica. 37 Larvae I. Abdominal gills are absent. Respiratory pits are present on the thoracic stemites. The femora and tibiae of the fore-legs are lined with a dense coat of setae on the anterior edge (Fig. 21) . . . . . Coloburiscidae This family has been reduced by some taxonomists to a subfamily of Oligoneuriidae. The only known genus from South America in this family is Murphyella Lestage , 1930, and its only known South American species is Murphyella needhami Lestage, 1930, from Chile.

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