Two new species of Farrodes from Continental South America with comments on the distribution of faunal components in Argentina (Ephemeroptera: Leptophlebiidae)

DOMINGUEZ, EDUARDO; SAVAGE, HARRY M.

STUDIES ON NEOTROPICAL FAUNA AND ENVIRONMENT

Swets & Zeitlinger

Año: 1987 p. 43 - 52

0165-0521

Two new species of Farrodes Peters are described. These new species are the first records of Farrodes from continental South America and Argentina, and represent a southward range extension of roughly 4.500 km. Both primary faunal components of Neotropical Leptophlebiidae are present in the north-argentinean province of Tucuman (27 S). However, these two faunal components are geographically separated along a temperature-elevation gradient. Farrodes and Thraulodes Ulmer of the Guiana & Brazilian Shields. Warm-adapted genera are common streams at elevations below 1,550 m. In contrast, the leptophlebiid fauna at elevations above 2,000 m is composed entirely of Patagonian Shield, South Andean, cold-Adapted genera, with Meridialaris and Massartellopsis being particularly abundant.