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Issue: Vol. 2965 No. 1: 13 Jul. 2011
Type: Articles
Published: 2011-07-13
DOI: 10.11646/zootaxa.2965.1.4
Page range: 51–60
Abstract views: 33
PDF downloaded: 1

A new species of Campsurus (Ephemeroptera: Polymitarcyidae: Campsurinae) from Argentina and Uruguay and redescription of C. evanidus and C. jorgenseni with new synonymies

Sección Entomología, Facultad de Ciencias, PEDECIBA, Universidad de la República, Montevideo, Uruguay
CONICET, Instituto de Biodiversidad Neotropical, Facultad de Ciencias Naturales e IML, Universidad Nacional de Tucumán, M. Lillo 205, San Miguel de Tucumán, 4000, Tucumán, Argentina
Ephemeroptera burrowing mayflies Campsurus juradinus Campsurus scutellaris Neotropical mayflies

Abstract

The subfamily Campsurinae (Ephemeroptera: Polymitarcyidae) includes one of the most specious genera of Ephemeroptera, Campsurus (with 40 known species), with a Pan-American distribution and its greatest diversity in South America. The following new synonymies are proposed: C. evanidus Needham & Murphy, 1924 (=C. juradinus Navás, 1930) and C. jorgenseni Esben-Petersen, 1912 (=C. scutellaris Needham & Murphy, 1924). Redescriptions, drawings and photographs are provided for both species. C. vulturorum sp. nov. from Argentina and Uruguay is described and illustrated for all life stages. It is characterized, in the adult stage, by: very large size (male fore wings 15.9–20.5 mm, female fore wings 21.0–28.0 mm), posterior margin of male abdominal sternum IX convex and rounded, pedestals subrectangular with a short projection on outer-posterior margin; penes widely separated distally, each arm formed by two lobes; and in mature nymphs by: mandibular tusks robust with a large submedian tubercle and six subapical rounded and small tubercles, maxilla with a short flat and triangular membranous gill on cardo.

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