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New species and records of the most diverse caddisfly genus in Brazil, Smicridea McLachlan, 1871 (Trichoptera: Hydropsychidae): solving a species delimitation through an integrative taxonomic approach
Author(s) -
Vilarino Albane,
Dias Everton Santos,
Calor Adolfo Ricardo
Publication year - 2019
Publication title -
austral entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.502
H-Index - 39
eISSN - 2052-1758
pISSN - 2052-174X
DOI - 10.1111/aen.12417
Subject(s) - subgenus , biology , caddisfly , hydropsychidae , zoology , genus , phallus (fungus) , subfamily , ecology , larva , gene , genetics
Smicridea is the only genus recorded in the New World for the Gondwanan subfamily Smicrideinae (Hydropsychidae). The genus comprises two subgenera, Smicridea ( Smicridea ) and Smicridea ( Rhyacophylax ). In Brazil, Smicridea numbers 55 species, of which 16 are referred to subgenus Smicridea and 39 to subgenus Rhyacophylax . Here, we describe two new species in Smicridea ( Rhyacophylax ) and one in Smicridea ( Smicridea ), both from Brazil. Smicridea ( Rhyacophylax ) scalprum sp. nov. belongs to the Smicridea dispar group and is diagnosed mainly by the truncate apex of segment X that has a concave notch apically. Smicridea ( Rhyacophylax ) sororis sp. nov. belongs to the Smicridea argentina group and is similar to Smicridea ( Rhyacophylax ) froehlichi , possibly representing a recent speciation process; Smicridea ( Rhyacophylax ) sororis sp. nov. is differentiated mainly by the papilla‐like lateral lobes on the phallus. DNA barcode sequences (577 bp of the mitochondrial gene COI) of Smicridea ( Rhyacophylax ) sororis sp. nov. and Smicridea ( Rhyacophylax ) froehlichi were integrated to evaluate species delimitations. Smicridea ( Smicridea ) capao sp. nov. belongs to the Smicridea fasciatella group and appears to be morphologically similar to some Smicridea ( Smicridea ) from Colombia. Smicridea capao sp. nov. is diagnosed by the strong subapical constriction on the phallus and the rounded apex. Additionally, we provide new distributional records of Smicridea ( Rhyacophylax ) froehlichi , Smicridea ( Rhyacophylax ) abrupta , Smicridea ( Rhyacophylax ) roraimense and Smicridea ( Smicridea ) franciscana .