Abstract
ABSTRACT A new species of Thraulodes Ulmer 1920 is described based on nymphs and imagos from Tapias river, Caldas department, Colombia. The mature nymphs were reared until the emergence of the imagos. Thraulodes latinus sp. n. can be distinguished from other species of the genus by: In males, the forewing without cross veins basal to bullae and with 11-14 cross veins distal to bullae, abdominal and legs color pattern, styliger plate redounded, with a long and digitiform median projection and shape of penes with apicolateral area forming an “ear-like” projection. In nymphs, the claws with eight denticles and the general coloration pattern. Additionally, data on the anatomy of the reproductive tract of both the male and female imago of the new species are presented.
Highlights
Thraulodes Ulmer is one of the most diverse genera of Ephemeroptera worldwide, with 80 species (Barber-James et al, 2008; Sartori and Brittain, 2015; Kluge, 2020; Pérez et al, 2020)
The posterior margin of the styliger plate of T. eduardorum straight and the median projection is short, while in T. latinus sp. nov. the posterior margin is rounded and the median projection long and digitiform; besides, these characteristics the ear like apicolateral area of the penes is more developed in T. latinus sp. nov. when compared to T. eduardorum
In T. latinus sp. nov. the anterior margin of pronotum is completely brown, while in T. telegraphicus the brown coloration is restricted to the anterolateral margin (Kluge, 2020)
Summary
Thraulodes Ulmer is one of the most diverse genera of Ephemeroptera worldwide, with 80 species (Barber-James et al, 2008; Sartori and Brittain, 2015; Kluge, 2020; Pérez et al, 2020). The origin of Thraulodes is austral (Allen and Brusca, 1978; Allen and Murvosh, 1983; McCafferty, 1998) and within the Leptophlebiidae family the genus is one of the most abundant, with a wide distribution in South America (Domínguez et al, 2006) In this region, the genus is reported from Colombia, Venezuela, Ecuador, Guyana, Peru, Brazil, Uruguay, Chile, Argentina and Bolivia (Traver and Edmunds Junior, 1967; Domínguez, 1986, 1987; Hubbard et al, 1992; Giordano and Domínguez, 2005). Data about the reproductive tract anatomy of nymph, subimago and adult of the new species are presented
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