Leptophlebiidae (Insecta: Ephemeroptera) from Gorgona Island National Natural Park (Tropical Eastern Pacific, Colombia) with the description of two new species

Abstract

-Gorgona National Natural Park comprises Gorgona and Gorgonilla Islands, located in the Colombian Pacific at 35 km from mainland. A large-scale study was conducted in Gorgona including samples from benthos and aereal nets and traps during five fieldworks. We here focus on the family Leptophlebiidae, describing two new species and giving data of four additional species. Terpides iguapoga sp. n. is described and illustrated from nymphs and adults, and can be characterized by the following characters, in the nymph: fore trochanter and femur with row of strong spine-like setae on inner margin, gills with blackish tracheae, posterolateral projections present on terga VI and VIII-IX; in the adult: upper portion of eyes orangeish white, forewing membrane hyaline tinged with yellowish around crossveins and marginal intercalary veins, genitalia with penes abruptly narrowing on distal third. Thraulodes insular sp. n. is described from nymphs and adults and diagnosed as follows, in the nymph: abdominal gills with narrow lamellae, femora with black streak near apex; in the imago: forewing costal area basal to bulla without crossveins, a spot and a band on femora, terga II-VI translucent white, terga VII-X darker, posterior margin of subgenital plate triangular, penes spines short and robust. We give new geographic records for four additional species: Farrodes caribbianus, Farrodes roundsi, Hagenulopsis esmeralda and Hagenulopsis zunigae. Ecological data and distributional maps are provided. Leptophlebiidae presents a reduced diversity in relation to mainland; in general the species recorded show a geographic relation to the Chocoan-Caribbean and Andean mayfly faunas.

New, additional and historical records of Leptophlebiidae (Insecta, Ephemeroptera) from Colombia

“…We examined and mounted the male genitalia and wings of imagos in permanent slides using Euparal®. For the identification of the collected insects taxonomic keys and original descriptions were used (Walker, 1853;Eaton, 1883Eaton, , 1892Needham and Murphy, 1924;Spieth, 1943;Traver, 1943Traver, , 1947Traver and Edmunds, 1967;Savage and Peters, 1983;Flowers, 1987;Savage, 1987a;Domínguez et al, 1996;Domínguez, 1999;Domínguez and Zúñiga, 2003;Peters et al, 2008;Kluge, , 2015Zúñiga et al, 2015;Salles et al, 2018).…”

A new species of Thraulodes Ulmer (Ephemeroptera: Leptophlebiidae), with additional data on the anatomy of the reproductive tract

“…The nymphs of Thraulodes are found in a wide range of altitudes with some species reported from 400 to 1700 m, generally associated with stony bottoms and well aerated waters, although some tolerate some fluctuations in temperature and oxygen (Domínguez et al, 2006;Flowers, 2009;Gonçalves et al, 2013). At present, about 80 species of Thraulodes are described, in South America the genus is represented by 51 species, the most known only from adult stage, a common scenario for the genus (Domínguez et al, 2006;Salles, 2006;Flowers, 2009;Gonçalves et al, 2010Gonçalves et al, , 2013Medina and Pérez, 2010;Mariano et al, 2011;Barber-James et al, 2013;Lima et al, 2013;Souto et al, 2014;Zúñiga et al, 2015;Boldrini et al, 2018;Campos and Mariano, 2019;Francischetti et al, 2019;Kluge, 2020;Pérez et al, 2020). In Colombia, only four species are documented: T. colombiae Walker, 1853; T. laetus Eaton, 1884;T.…”