Anacroneuria quadriloba Jewett. Moreover 1958
| Main Author: | Mayorga, Alfredo |
|---|---|
| Format: | info publication-taxonomictreatment Journal |
| Terbitan: |
, 2016
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/4758613 |
Daftar Isi:
- Anacroneuria quadriloba Jewett, 1958 (Figs. 11-16) http://lsid.speciesfile.org/urn:lsid: Plecoptera.speciesfile.org: TaxonName:1771 Anacroneuria quadriloba Jewett, 1958:166. Holotype ♀ (FMNH), Metlac, Veracruz, Mexico Material examined. MEXICO: Oaxaca, 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 ♂, 1♀. Adult habitus. 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). Male. 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). Female. 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). Diagnosis. This species is similar in head and pronotal coloration to the recently described A. quetzali Gutiérrez-Fonseca & Springer, 2015 from Costa Rica. However, A. quetzali is overall a larger species, its aedeagus subapex is not constricted, and its apical membranes are smaller than in A. quadriloba. Distribution. Guatemala, Mexico (Chiapas, Oaxaca and Veracruz), Panama (DeWalt et al. 2016). Comments. This species was redescribed by Stark & 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&12). The female subgenital plate is illustrated from recently collected specimens (Fig. 16).
- Published as part of 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) on pages 69-71, DOI: 10.5281/zenodo.4752820