Polyplectropus paysandu Angrisano

Chamorro, Maria Lourdes & Holzenthal, Ralph W., 2010, 2582, Zootaxa 2582, pp. 1-252: 68

publication ID

1175­5334

persistent identifier

http://treatment.plazi.org/id/0349878B-DD11-A47D-02FC-0B0EFEBBF821

treatment provided by

Felipe

scientific name

Polyplectropus paysandu Angrisano
status

 

Polyplectropus paysandu Angrisano  

Figs. 32, 141

Polyplectropus paysandu Angrisano, 1994: 134   . [Type locality: Uruguay, Depto. Paysandú, Sta. Rita   ; FHCU; male; wings].

This species is easily distinguished from other species in the P. annulicornis   group by the absence of a dorsolateral process of the preanal appendage and of a dorsal digitate lobate projection on the mesoventral process of the preanal appendage. It also has broadly separated mesoventral processes, an upturned, apically sclerotized intermediate appendage, and a rounded shorter sternum IX. Polyplectropus paysandu   shares with other species in the P. annulicornis   group the anteriorly bilobed basal plate of the inferior appendage.

Adult. Length of forewing 4.5 mm, n = 1. Color of head brown, thorax brown, legs brown (specimen preserved in alcohol).

Male genitalia. Sternum IX in lateral view rounded, anterior margin highly convex, posterior margin convex; in ventral view rectangular, anterior margin highly concave, posterior margin with slight median flange. Tergum X membranous, oblong, bearing dorsal microsetae. Intermediate appendage not longer than inferior appendage, digitate, with a pair of long apical setae; in dorsal view apex slightly sclerotized and bent anterodosally; in caudal view digitate, broadening apically, directed mesally. Preanal appendage bipartite; mesolateral process setose; in dorsal view oblong, in lateral view oblong; mesoventral process setose; in lateral view hook-like, tapering ventrally into sclerotized apex, anteroventral margin concave, posterior margin rounded; in caudal view processes separated, ventral margin of process acute with sclerotized point. Inferior appendage bipartite with anterior basal plate not extending anterad beyond sternum IX when observed in lateral view and anteriorly bilobed; dorsal branch setose, in lateral view broadly pandurate, with posterior margin slightly convex and directed posterad; in ventral view broad, lateral margin apically produced, entire, posterior margin angled, mesal margin entire, subapically expanded, becoming concave, expanding posterad into ventral branch; ventral branch setose, elongate, bearing apical sclerotized spine, in lateral view digitate, narrowing posterad; in ventral view deltoid, posteromesal margin convex, mesal margin slightly angled, gradually converging mesally. Phallus long; dorsal phallic sclerite in lateral view sinuate, apex pandurate; endothecal membrane with 2 stout, sclerotized spines.

Material examined. URUGUAY: Paysandú: Sta. Rita   , orilla Rio Uruguay, [32°07'00"S, 58°09'00"W], 1.xii.1959, C S Carbonell — 1 male [holotype] ( FHCU) GoogleMaps   .

Distribution. Uruguay.

Remarks. Only a single male specimen is known for this species. The male genitalia of the specimen appeared to be slightly damaged, particularly the dorsal region of the genitalia, thus obscuring structures present there.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Trichoptera

Family

Polycentropodidae

Genus

Polyplectropus

Loc

Polyplectropus paysandu Angrisano

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

Polyplectropus paysandu

Angrisano, E. B. 1994: 134
1994