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 recognized from South the USA and all species from Brazil, yet for many teams, the scope used to be extended to surround all species in South the USA, and, often times, to incorporate terrestrial species of orders comprising either terrestrial and aquatic taxa. In no case is a taxonomic revision of any crew undertaken, even supposing thoughts for such revisions are integrated the place applicable, and possible synonymy of nominal species nonetheless handled as legitimate within the literature is famous. various ways could be hired in accordance with the taxon being taken care of. For phylogenetic teams encompassing overwhelmingly or solely aquatic species, comparable to the orders Plecoptera and Ephemeroptera or the households Dytiscidae and Culicidae, keys are supplied to tell apart all genera and species recognized to ensue in South the United States. An attempt has been made to incorporate each identifiable species in order that the consumer ofthe key can make sure with moderate walk in the park even if his specimen belongs to a species that has already been defined or if it is one who isn't but recognized 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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Extra resources for Encyclopedia of South American Aquatic Insects: Ephemeroptera: Illustrated Keys to Known Families, Genera, and Species in South America
Potamanthidae No South American species are assigned to this family. - The anterior margin of the head is truncate or concave, exposing the labrum. The mandibular tusks are densely hairy (Fig. 22). ... ..... ... .... p. 45 5. The front of the head is rounded with no conspicuous process, or if such a process is present, mandibular tusks viewed laterally curve downward apically and possess 20 or more tubercles on the upper surface (Fig. 25). p. 51 .........................................
Length of the male: 12 mm; fore-wing length of the male: 13 mm. Color: light brown with an ochre yellow abdomen, which has a dark longitudinal stripe crossing the midline of the anterior six tergites. The wings are clouded, and the subcostal and radial veins are blackened. The female has not been described, and the description of the male is very sketchy. A redescription, particularly of the wing veins, is urgently needed. ... Campsurus quadridentatus Eaton, 1871 (Peru, Argentina, Para). - The lateral extensions of the apical sternite of the male abdomen do not extend well beyond the bases of the forceps, or they do not form double triangular 56 processes on each side (Fig.
Asthenopus gilliesi Dominguez, 1988 (Uruguay). Fig. 44 Asthenopus curtus: fore and hind wing of a male (upper left); fore (center), middle (lower right center), and hind leg (upper right center); genitalia of a male in ventral view (lower left center) as illustrated by Demoulin (l955a), whose identification of the species as Asthenopus amazonicus was questionable; genitalia of a male in ventral view (right) as illustrated by Dominguez (l988a). 55 C3D gO Qill UI III Fig. 45 Asthenopus gilliesi male: fore and hind wing (left), color pattern on the second through eighth abdominal tergites (lower center), and the genitalia in ventral view (right).