Anacroneuria brava Mayorga &amp; Contreras-Ramos 2017, sp. nov.
Creators: name: Mayorga, Alfredo
name: Contreras-Ramos, Atilano
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Anacroneuria
Anacroneuria brava

description: <i>Anacroneuria brava</i> Mayorga &amp; Contreras-Ramos, sp. nov. http://lsid.speciesfile.org/urn:lsid: Plecoptera.speciesfile.org: TaxonName:497668 (Figs. 1-5) <b>Material Examined.</b> Holotype &amp;male; (CNIN-PLH-3): MEXICO: Estado de México, Valle de Bravo, [19.19512, -100.13261, post-processed to 10 km radius; mean elevation 1800 m a.s.l.], July 1979, J. Bueno. <b>Adult habitus.</b> General color of body dark (Fig. 1). Head pigmentation with complex pattern. Pigment pattern over ocelli pentagonal-shaped and black tinted; a truncated arrow-shaped pattern defined by short, fine setae replaces usual M-line; a dark, diamond-shaped area centered on clypeus; lappets obscure and elongate; mesal area of head well defined and sclerotized; anterior to ocelli a zig-zag pattern extends to bases of antennae; circumantennal ridges connect lappets by dark shading to anterior margin of eyes; white rhomboidal-shaped plate located above the ridges; dark triangles with middle inclined brown band at posterior area of eyes. Pronotum with narrow, brown mid longitudinal stripe; discs dark with scattered rugosities obscured; a paler, wide transverse band (Fig. 2). Wing membrane dark brown with veins darker (Fig. 1). Fore leg completely dark brown, with subtle dark stripe at proximal end of femur. <b>Male.</b> Forewing length 20 mm. Hammer absent. Ventral: Aedeagal apex truncate and straight, little constricted at base; aedeagus arms slightly widened and curved subapically bearing a pair of small membranous lobes at center. Hooks slender, typical in appearance; space between hooks forming an antique door lock-shape; interior corners from the base of hooks sclerotized with a small bulge on both sides at vertex; frontal walls of mesal area with some bristles on each side (Fig. 3). Dorsal: Simple. Aedeagal keel consists of a lengthened projection with straight margins laterally, circular anteriorly and triangular posteriorly, poorly sclerotized and transparent (Fig. 5). <b>Female.</b> Unknown. <b>Larva.</b> Unknown. <b>Distribution.</b> Mexico, Estado de México, Valle de Bravo. <b>Diagnosis.</b> This species is similar to <i>A. aethiops</i> (Walker, 1852), <i>A. brailovskyi</i> Stark &amp; Kondratieff, 2004, <i>A. flavifacies</i> Jewett, 1958 and <i>A. ratcliffei</i> Stark &amp; Kondratieff, 2004 in pronotal pigment pattern, however that of <i>A. brava</i> is far more complex (Fig. 2). The body size of <i>A. brava</i> is also larger than <i>A. aethiops, A. braivloskyi</i> and <i>A. flavifacies.</i> The aedeagus of <i>A. brava</i> is similar to <i>A. brailovskyi</i> but its apex is truncate, while in <i>A. brailovskyi</i> it is concave. The shape of the dorsal, transparent keel (Figs. 3, 5), clearly distinguishes this one from all other <i>Anacroneuria</i> species. <b>Comments.</b> This is one of the largest and darkest species of Mexican <i>Anacroneuria</i> (Fig. 1). The specimen was found pinned on the pronotum, and was unpinned and transferred to EtOH; body coloration, pigment patterns, and diagnostic structures are well preserved. <b>Etymology.</b> The species name, used as a noun in apposition, is based to the type locality of “Valle de Bravo”.
description: Published as part of <i>Mayorga, Alfredo &amp; Contreras-Ramos, Atilano, 2017, The New Species Anacroneuria Brava (Plecoptera: Perlidae), With Provisional Description Of An Unassociated Female, And New Distribution Records From Mexico, pp. 23-29 in Illiesia 13 (2)</i> on pages 24-25, DOI: 10.25031/2017/13.02, http://zenodo.org/record/4761051
description: {"references": ["Stark, B. P. &amp; B. C. Kondratieff. 2004. Anacroneuria from Mexico and upper Mesoamerica (Plecoptera: Perlidae). Monographs of the Western North American Naturalist, 2: 1 - 64."]}