Anacroneuria quadriloba Jewett. Moreover 1958
Creators: name: Mayorga, Alfredo
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Anacroneuria
Anacroneuria quadriloba

description: <i>Anacroneuria quadriloba</i> Jewett, 1958 (Figs. 11-16) http://lsid.speciesfile.org/urn:lsid: Plecoptera.speciesfile.org: TaxonName:1771 <i>Anacroneuria quadriloba</i> Jewett, 1958:166. Holotype &amp;female; (FMNH), Metlac, Veracruz, Mexico <b>Material examined.</b> <b>MEXICO: Oaxaca</b>, km 11, carr. Cuicatlán-Sgo. Quiotepec, 17°36´12.46” N 96°35´44” W, 610 m. a.s.l., 12 July 1996, R. Barba, A. Rojas, 1 &amp;male;, 1&amp;female;. <b>Adult habitus.</b> General body ground color brown (Fig. 11). Head brown medially; pigment pattern extends from occiput, through ocelli and anterior to M-line and lappets; M-line wide and pale, interrupted by a space and continued forward with a brown pattern V-shaped curved; lappets large, brown with small tufts of bristles at the base; brown circum-antennal ridges connect lappets to anterior margin of eyes; darker shading posterior to eyes and clothed with variously sized bristles. Pronotum with pale, narrow band at center, discs patterned with elongate, pale, C-shaped stripes; mediolateral areas of discs with dark rugosities; lateral margins pale, anterior and posterior margins with narrow, dark line (Fig. 12). Wing membranes amber, veins brown, costa transparent and sub-costa darker. Forelegs brown; femora grading from pale to dark banded at apex (Fig. 11). <b>Male.</b> Forewing length 18 mm. General body color as above. Ventral: aedeagal apex truncate with notched tip; aedeagus constricted subapically and bearing a pair of large membranous lobes covering most of apex and shoulders (Fig. 13); shoulders rounded and sclerotized; hooks typical in appearance, the space between hooks "skeleton-key shaped"; medial processes of hooks forming sharp corners; mediobasal area of hooks with bristles moderate in length (Fig. 13). Lateral: apex rounded frontally and with posterior projection with pointy tip; protuberance at median area and concave at base (Fig. 14). Dorsal: of aedeagus without keel; apex as discussed above; apex divergent (Fig. 15). <b>Female.</b> Forewing length 23 mm. General body color as above. Subgenital plate 4-lobed with slightly curved, setose posterior borders; lateral margins of lobes same in length as in their width; shallow U-shaped notch at middle of lobes. Sternum 9 without transverse sclerite; dark, mesal sclerite M-shaped with a deep and U- or V-shaped notch at apex, entire structure covered with long hairs; rest of sternum 9 mostly membranous with few hairs (Fig. 16). <b>Diagnosis.</b> This species is similar in head and pronotal coloration to the recently described <i>A. quetzali</i> Gutiérrez-Fonseca &amp; Springer, 2015 from Costa Rica. However, A. <i>quetzali</i> is overall a larger species, its aedeagus subapex is not constricted, and its apical membranes are smaller than in <i>A. quadriloba.</i> <b>Distribution.</b> Guatemala, Mexico (Chiapas, Oaxaca and Veracruz), Panama (DeWalt et al. 2016). <b>Comments.</b> This species was redescribed by Stark &amp; Kondratieff (2004), but because of the age of the material, only a diffuse pigment pattern was present on the head and pronotum. Examination of fresh specimens revealed a distinctive head and pronotal pattern (Figs. 11&amp;12). The female subgenital plate is illustrated from recently collected specimens (Fig. 16).
description: Published as part of <i>Mayorga, Alfredo, 2016, A New Species Of Anacroneuria Klapálek (Plecoptera: Perlidae) And Complementary Descriptions Of Three Additional Species From Mexico, With Comments On The Current Knowledge Of Mexican Species Of The Genus, pp. 64-73 in Illiesia 12 (12)</i> on pages 69-71, DOI: 10.5281/zenodo.4752820
description: {"references": ["Jewett, S. G. 1958. Stoneflies of the genus Anacroneuria from Mexico and Central America. The American Midland Naturalist, 60: 159 - 175.", "Gutierrez-Fonseca, P. E. &amp; M. Springer. 2015. A new species of Anacroneuria Klapalek 1909 (Plecoptera: Perlidae) and notes on the altitudinal distribution of the genus in Costa Rica. Zootaxa, 4058: 595 - 600.", "DeWalt, R. E., M. D. Maehr, U. Neu-Becker and G. Stueber. 2016. Plecoptera Species File Online. Version 5.0 / 5.0. 10 / 31 / 2016. http: // Plecoptera. SpeciesFile. org", "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."]}