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Issue: Vol. 5154 No. 3: 15 Jun. 2022
Type: Article
Published: 2022-06-15
DOI: 10.11646/zootaxa.5154.3.10
Page range: 380-392
Abstract views: 340
PDF downloaded: 21

A new species of Tricorythodes Ulmer from Colombia and additional notes on T. serratus (Baumgardner & Ávila) (Ephemeroptera: Leptohyphidae)

Universidad de Caldas, Facultad de Ciencias Exactas y Naturales, Manizales, Colombia
2Florida A&M University, Tallahassee, Florida, United States
Universidad de Caldas, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Grupo de investigación BIONAT, Manizales, Colombia
Pannota Neotropical region new species mayfly distribution Cabecar Ephemeroptera

Abstract

A new species of Tricorythodes is described and illustrated based on nymphs from Colombia. Legs, mouthparts and other parts of the body were photographed through SEM and molecular characterization was performed by amplification of the COImt gene. Tricorythodes carare sp. nov. shows close affinities with T. serratus (Baumgardner & Ávila), both sharing a similar coloration pattern and the presence of chalazae on femora. The new species can be distinguished from T. serratus and all the species of the genus by the following combination of characters: maxillary palp 3-segmented, with apical setae; dorsal surface of median and hind femora with a longitudinal row of 5 to 9 chalazae serrated in the apex, tarsal claws with 4 or 5 marginal denticles and with 1–3 submarginal denticles; posterior margin of the abdominal terga with serrated chalazae in the apex. SEM images and distance analysis of the partial sequences of the COI gene were useful to discriminate the new species from T. serratus (genetic divergence 17–19%). An additional undescribed species of this group is reported from Esmeraldas in Ecuador and for the departments of Sucre and Chocó in Colombia, but it is not described here because of the low number of individuals and the lack of DNA integrity. What is known under the name Tricorythodes serratus is suspected to be a species complex.

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