The taxonomy and phylogeny of selected northern Neotropical Leptophlebiidae were investigated. Results are presented on two separate systematic problems. The first includes the description and phylogenetic analysis of a curious new genus and species of Atalophlebiinae from the southern coastal mountains of Brazil. Nymphs of this taxon display a large number of derived character states that appear to be correlated with a sprawling habit and use of the legs for collecting-gathering. The second concerns the systematics of Terpides Demoulin and closely related genera. The taxonomic treatment of Terpides and related genera includes revisions of two genera, establishment of two new genera and one new subgenus, recognition of two species-groups within Terpides, description of ten new species, redescription of six species including the transfer of three species previously described in Choroterpes Eaton to their respective Neotropical genera, keys to genera and species, distribution maps for genera and species, and illustrations of useful morphological characters. Phylogenetic analysis demonstrates that Terpides and related genera constitute a monophyletic lineage, the Terpides lineage. The Terpides lineage is an ancient lineage that stems from the base of the Atalophlebiinae very near the basal furcation within the Leptophlebiidae between the subfamilies Atalophlebiinae and Leptophlebiinae. Members of the Terpides lineage are placed in the subfamily Atalophlebiinae because they share the following derived states with other Atalophlebiinae: (1) square facets in upper portions of male imaginal eyes; (2) denticles on anteromedian emargination of labrum; (3) two rows of hair-like setae on dorsal anteromedian margin of labrum; and (4) absence of anterosubmedian, spine-like setae on labrum. The Terpides lineage appears to have been isolated on the ancient Guiana and / Brasilian Shields of South America during the Tertiary and dispersed northward when the isolation of South America ended with the development of the lower Central American isthmus in the Quaternary. The Terpides lineage is presently widely distributed in the Neotropics from Bolivia north to southern Mexico. The phylogenetic relationships among species of the Terpides lineage are represented by phylograms and data on character state distributions presented. / Source: Dissertation Abstracts International, Volume: 44-11, Section: B, page: 3297. / Thesis (Ph.D.)--The Florida State University, 1983.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_75236 |
| Contributors | SAVAGE, HARRY MICHAEL., Florida State University |
| Source Sets | Florida State University |
| Detected Language | English |
| Type | Text |
| Format | 255 p. |
| Rights | On campus use only. |
| Relation | Dissertation Abstracts International |
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