New Proposal of Setal Homology in Schizomida and Revision of Surazomus (Hubbardiidae) from Ecuador

The homology of three somatic systems in Schizomida is studied yielding the following results: (1) proposal of homology and chaetotaxy of abdominal setae in Surazomus; (2) revision of the cheliceral chaetotaxy in Schizomida, with suggestion of new homology scheme between Hubbardiidae and Protoschizo...

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Bibliographic Details
Published in:PloS one 2016-02, Vol.11 (2), p.e0147012-e0147012
Main Authors: Manzanilla, Osvaldo Villarreal, de Miranda, Gustavo Silva, Giupponi, Alessandro Ponce de Leão
Format: Article
Language:English
Subjects:
Abdomen
Animal Distribution
Animal Structures - ultrastructure
Animals
Arachnida
Arthropoda
Chelicerata
Ecuador
Evolution
Female
Flagella
Homology
Hubbardiidae
Hypotheses
Laboratories
Morphology
Museums
New records
New species
Protoschizomidae
Schizomida
Schizomus
Sensilla - ultrastructure
Setae
Species Specificity
Spiders - classification
Spiders - ultrastructure
Subgroups
Surazomus
Surazomus cuenca
Sympatric populations
Taxonomy
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Summary:The homology of three somatic systems in Schizomida is studied yielding the following results: (1) proposal of homology and chaetotaxy of abdominal setae in Surazomus; (2) revision of the cheliceral chaetotaxy in Schizomida, with suggestion of new homology scheme between Hubbardiidae and Protoschizomidae, description of a new group of setae in Hubbardiinae (G7), and division of setae group 5 in two subgroups, G5A and G5B; (3) proposal of segmental homology between trimerous and tetramerous female flagellum in Hubbardiinae with association of segment III of tri-segmented species to segments III + IV of tetra-segmented species. Considerations about the dorsal microsetae on the male flagellum are made. The genus Surazomus in Ecuador is revised. The sympatric species Surazomus palenque sp. nov. and S. kitu sp. nov. (Ecuador, Pichincha) are described and illustrated. The female of S. cuenca (Rowland and Reddell, 1979) is described, with two new distributional records for the species. Surazomus cumbalensis (Kraus, 1957) is recorded for the first time from Ecuador (Pichincha).
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0147012