The New Species Anacroneuria Brava (Plecoptera: Perlidae), With Provisional Description Of An Unassociated Female, And New Distribution Records From Mexico Author Mayorga, Alfredo and Atilano Contreras-Ramos & Instituto de Biología, UNAM, Depto. de Zoología, Colección Nacional de Insectos (CNIN), 04510 Mexico City, Mexico. Corresponding author: Alfredo Mayorga E-mail: amayorga. entomology @ gmail. com) amayorga.entomology@gmail.com Author Contreras-Ramos, Atilano and Atilano Contreras-Ramos & Instituto de Biología, UNAM, Depto. de Zoología, Colección Nacional de Insectos (CNIN), 04510 Mexico City, Mexico. Corresponding author: Alfredo Mayorga E-mail: amayorga. entomology @ gmail. com) amayorga.entomology@gmail.com text Illiesia 2017 2017-07-21 13 2 23 29 http://illiesia.speciesfile.org/papers/Illiesia13-02.pdf journal article 10.25031/2017/13.02 3905da12-19aa-4ce8-ae65-2ffddf3ff08e 1854-0392 4761051 Anacroneuria brava Mayorga & Contreras-Ramos , sp. nov. http://lsid.speciesfile.org/urn:lsid: Plecoptera .speciesfile.org: TaxonName:497668 ( Figs. 1-5 ) Material Examined. Holotype ♂ (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 . Adult habitus. 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. Male. 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 ). Female. Unknown. Larva. Unknown. Distribution. Mexico , Estado de México , Valle de Bravo. Diagnosis. This species is similar to A. aethiops (Walker, 1852) , A. brailovskyi Stark & Kondratieff , 2004, A. flavifacies Jewett, 1958 and A. ratcliffei Stark & Kondratieff, 2004 in pronotal pigment pattern, however that of A. brava is far more complex ( Fig. 2 ). The body size of A. brava is also larger than A. aethiops , A. braivloskyi and A. flavifacies . The aedeagus of A. brava is similar to A. brailovskyi but its apex is truncate, while in A. brailovskyi it is concave. The shape of the dorsal, transparent keel ( Figs. 3, 5 ), clearly distinguishes this one from all other Anacroneuria species. Comments. This is one of the largest and darkest species of Mexican Anacroneuria ( 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. Etymology. The species name, used as a noun in apposition, is based to the type locality of “Valle de Bravo”.