Polyplectropus nayaritensis Bueno-Soria

Chamorro, Maria Lourdes & Holzenthal, Ralph W., 2010, 2582, Zootaxa 2582, pp. 1-252: 230-231

publication ID

1175­5334

persistent identifier

http://treatment.plazi.org/id/0349878B-DDB7-A4D8-02FC-0BBEFE45FBB1

treatment provided by

Felipe

scientific name

Polyplectropus nayaritensis Bueno-Soria
status

 

Polyplectropus nayaritensis Bueno-Soria  

Figs. 16H, 120, 124

Polyplectropus nayaritensis Bueno-Soria, 1990: 362   . [Type locality: Mexico, Nayarit, Compostela ; IBUNAM; male].

The holotype of this species is in poor condition and the male genitalia was considerably damaged, preventing proper observations of presence and connection of certain structures. Only the lateral and ventral aspects of the male genitalia were conserved enough to illustrate. Fortunately, a forewing remained intact, thus revealing the cubital 2 (Cu 2) vein to be apically entire when reaching the margin at the arculus (not bent distally as in all other New World Polyplectropus   , with the exception of P. beccus   ) and a highly pigmented Anal 1 vein (A1), which is directed towards Anal veins 2 and 3 (not towards Cu 2 as in other New World Polyplectropus   ). Furthermore, a sister relationship between P. nayaritensis   and P. panamensis   sensu Bueno- Soria (1990) was not supported by the phylogenetic analysis. Superficially, these species may resemble each other in the shape of the intermediate appendage, these being oblong in both species, and in the oblong and dorsally upturned dorsal branch of the inferior appendage. However, the shape of the ventral branch of the inferior appendage and its relative position to the dorsal branch in P. nayaritensis   is quite different and distinct from anything in the genus.

Adult. Length of forewing 5 mm, n = 1. Color of head yellow, thorax and legs yellow.

Male genitalia. Sternum IX in lateral view deltoid, anterior margin entire, posterior margin sinuate; in ventral view rectangular, anterior margin entire, posterior margin with slight median flange. Tergum X membranous, oblong, bearing dorsal microsetae. Intermediate appendage as long as inferior appendage, oblong, with long basal setae; in dorsal view basally broad, tapering mesally to rounded apex; in caudal view digitate, membranous. Preanal appendage bipartite; mesolateral process setose; in dorsal view oblong, in lateral view orbicular; mesoventral process setose; in lateral view digitate, with ventrad-directed sclerotized apex, anteroventral margin concave, posterior margin rounded. Inferior appendage bipartite with anterior basal plate not extending anterad beyond sternum IX when observed in lateral view; dorsal branch setose, in lateral view clavate, curved ventrad; in ventral view narrow, lateral margin convex, undulate, posterior margin rounded, mesal margin entire, apically expanded, becoming concave, expanding posterad into ventral branch; ventral branch setose, elongate, in lateral view lanceolate, rounded posterad; in ventral view basally rectangular, abruptly narrowing apically, sclerotized apex curved posteromesad, ventral branch not visible in lateral view, gradually converging mesally. Phallus long; endothecal membrane with 3 to 4 stout, short, linear, sclerotized spines.

Material examined. MEXICO: Nayarit: Compostela , [21°14'00"N, 104°55'00"W], 21.x.1982, Ibarra & García — 1 male ( IBUNAM) [holotype] GoogleMaps   .

Distribution. Mexico.

IBUNAM

Instituto de BiIología, Universidad Nacional Autónoma de México

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Trichoptera

Family

Polycentropodidae

Genus

Polyplectropus

Loc

Polyplectropus nayaritensis Bueno-Soria

Chamorro, Maria Lourdes & Holzenthal, Ralph W. 2010
2010
Loc

Polyplectropus nayaritensis

Bueno-Soria, J. 1990: 362
1990