Systematics of Otarrha, a new Neotropical subgenus of Chimarra (Trichoptera: Philopotamidae)

  • Blahnik R
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Abstract

Subgenus Otarrha is established in genus Chimarra to include eighteen described species formerly placed either in subgenus Chimarra or unplaced to subgenus, and thirteen new species. All species are Neotropical, with collective distributions primarily in the Antilles (Greater and Lesser) and northern South America. One species occurs in southeastern Brazil and another species in Costa Rica and Panama. New species are described, recognized species redescribed (except for C. diannae and C. koki), and a key to the identification of males in the subgenus is provided. Additionally, characters supporting monophyly of the subgenus and a phylogeny of its species are proposed. Described species transferred to this subgenus include Chimarra cubanorum Botosaneanu, C. diakis Flint, C. diannae Flint & Sykora, C. dominicana Flint, C. garciai Botosaneanu, C. guapa Botosaneanu, C. jamaicensis Flint, C. koki Botosaneanu, C. machaerophora Flint, C. patosa Ross, C. puertoricensis Flint, C. quadrifurcata Botosaneanu, C. retrorsa Flint, C. rossi Bueno-Soria, C. sensillata Flint, C. septemlobata Flint, C. septifera Flint and C. spinulifera Flint. Chimarra patosa is designated the type species of the subgenus. New species described in Otarrha include Chimarra amazonia (Peru), C. barinas (Venezuela), C. darlingtoni (Cuba), C. diaphora (Venezuela), C. incipiens (Venezuela), C. odonta (Brazil), C. parene (Peru), C. parilis (Peru), C. particeps (Peru), C. peruana (Peru), C. phthanorossi (Colombia), C. redonda (Dominican Republic) and C. tachuela (Venezuela). Two additional species are described and left incertae sedis to subgenus, Chimarra usitatissima Flint and C. angularis, sp.n. (Venezuela, Guyana).

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Authors

  • Roger J. Blahnik

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