Abstract
Acanthagrion marinae sp. nov. (Holotype male: BRASIL, Mato Grosso do Sul, Campo Grande, UFMS, 20°29'56.26''S - 54°36'48.43''W, 547m, leg. M.E. Rodrigues, 03.ii.2015, collection code: VZYG437, MLP) is described and illustrated on the basis of 15 males. The new species belongs to the apicale species group by having horns on S10 and sclerotized hooks on tip of distal segment of the genital ligula. It can be easily distinguished from other species of the group by a combination of characters of the genital ligulae (presence of setae on segment two; absence of setae at flexure; distal lateral lobes of segment three absent). Notes on habitat and a modification of previous keys for the species of the apicale group are provided.
Highlights
The neotropical genus Acanthagrion was erected in 1876 by Baron Edmond Selys-Longchamps to include nine species of Coenagrionidae
The three species originally included within the apicale species group (A. apicale, A. obsoletum, and A. phallicorne) share the presence of horns in S10 of males, elevated mesepisternal fossae in females, and presence of orange coloration in head and thorax of mature specimens
Specimens were studied with the aid of a Leica MS5 stereomicroscope in the Laboratorio de Biodiversidad y Genética Ambiental (BioGeA) of the Universidad Nacional de Avellaneda (UNDAV)
Summary
The neotropical genus Acanthagrion was erected in 1876 by Baron Edmond Selys-Longchamps to include nine species of Coenagrionidae. It includes 44 coenagrionids ranging from Texas (USA) to Buenos Aires (Argentina) (Garrison et al 2010, Machado 2012). According to von Ellenrieder and Lozano (2008) and Garrison et al (2010) species of Acanthagrion are small to medium size with wings generally hyaline, CuP of HW reaching posterior margin of wing; flexure of male genital ligula short with lateral lobes of segment 3, when present, distal to flexure; male. Muzón and Lozano (2005) described A. hartei from Ecuador and included it within the apicale group, based on shared characters with its members. Machado (2012) provided a revision of the group and added four new species (A. chicomendesi, A. flaviae, A. kaori, and A. triangulare), and accorded specific rank for Fraser’s A. apicale descendens, bringing the total number of species of the group to nine
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
