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Issue: Vol. 5448 No. 2: 10 May 2024
Type: Article
Published: 2024-05-10
DOI: 10.11646/zootaxa.5448.2.8
Page range: 283-291
Abstract views: 6
PDF downloaded: 0

New species of Bryophaenocladius Thienemann, 1934 (Diptera: Chironomidae) from Argentina

Instituto de Limnología ‘Dr. Raúl A. Ringuelet’ (ILPLA) CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas) CCT–La Plata. Boulevard 120; Casco Urbano; B1900 La Plata; Buenos Aires; Argentina; Facultad de Ciencias Naturales y Museo (FCNyM – UNLP). Avenida 122 y 60; Casco Urbano; B1900 La Plata; Buenos Aires; Argentina
Programa de Estudios Aplicados a la Conservación del Parque Nacional Nahuel Huapi (CENAC–APN); Fagnano 244; San Carlos de Bariloche; Río Negro; Argentina
Instituto de Limnología ‘Dr. Raúl A. Ringuelet’ (ILPLA) CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas) CCT–La Plata. Boulevard 120; Casco Urbano; B1900 La Plata; Buenos Aires; Argentina; Facultad de Ciencias Naturales y Museo (FCNyM – UNLP). Avenida 122 y 60; Casco Urbano; B1900 La Plata; Buenos Aires; Argentina
Diptera Orthocladiinae Neotropical region Patagonia geometric morphometrics

Abstract

Three new species of Bryophaenocladius Thienemann are described and figured as male imagines: B. urbanus sp. n. from Central Argentina, and B. virgotruncatus sp. n. and B. nasus sp. n. from Argentinean Patagonia. A geometric morphometric analysis was performed to evaluate the taxonomic value of the shape of the anal point in species delimitation. The analysis involved 96 species. As a result, the Bryophaenocladius species showed significant anal point patterns of shape change, recovering three main shape types: rounded, equilateral triangle-shaped, and isosceles triangle-shaped. An identification key of the Bryophaenocladius species from the Neotropical region is provided.

 

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