Polyplectropus fuscatus Flint

Chamorro, Maria Lourdes & Holzenthal, Ralph W., 2010, 2582, Zootaxa 2582, pp. 1-252 : 121-122

publication ID

1175­5334

persistent identifier

https://treatment.plazi.org/id/0349878B-DD2A-A447-02FC-08D6FD54FEBF

treatment provided by

Felipe

scientific name

Polyplectropus fuscatus Flint
status

 

Polyplectropus fuscatus Flint View in CoL

Figs. 59, 140

Polyplectropus fuscatus Flint, 1983: 28 View in CoL . [Type locality: Argentina, Pcia ,. Misiones, Arroyo Piray Guazú, N San Pedro ; NMNH; male].

Polyplectropus fuscatus View in CoL can be distinguished from the other 2 species in the group by the absence of a dorsolateral process of the preanal appendage and by the fused mesoventral processes of the preanal appendage (free in P. tragularius and P. rondoniensis , new species). Polyplectropus fuscatus View in CoL is most similar to P. tragularius , new species. Both species have a bipartite intermediate appendage, a pair of narrow, mediumsized endothecal phallic spines, and a dorsal, digitate lobe of the mesoventral process of the preanal appendage. These species also have similar inferior appendages, namely a pandurate dorsal branch. Polyplectropus fuscatus View in CoL differs from P. tragularius in the rounded ventral lobe of the intermediate appendage (longer and apically broader in P. tragularius ) and in the rectangular ventral branch of the inferior appendage (oblong in P. tragularius ). Polyplectropus fuscatus View in CoL also resembles P. beutelspacheri Bueno-Soria View in CoL based on the absence of a dorsolateral process of the preanal appendage, on the shape of the inferior appendage, and on having a bipartite intermediate appendage. However, P. beutelspacheri View in CoL does not have a dorsal digitate lobe on the mesoventral process of the preanal appendage, thus distinguishing it from all other species in the P. fuscatus View in CoL group.

Adult. Length of forewing 4.2–5.1 mm, n = 22. Color of head, thorax, and legs brown; setae on wings dark-brown with grey and yellow setae.

Male genitalia. Sternum IX in lateral view deltoid, anterior margin entire, posterior margin sinuate; in ventral view rectangular, anterior margin highly concave, posterior margin with median flange. Tergum X membranous, oblong, bearing dorsal microsetae; lower lip of tergum X membranous, smooth, without dorsal microsetae, digitate; in dorsal view digitate; in caudal view produced dorsad of phallocrypt. Intermediate appendage not longer than inferior appendage, bipartite, digitate with mesoventral oblong lobe with long setae throughout; in dorsal view primary lobe oblong; in caudal view broadly digitate, secondary lobe rounded. Preanal appendage bipartite; small remnant of dorsolateral process of preanal appendage; mesolateral process setose; in dorsal view orbicular, in lateral view deltoid; mesoventral process setose; in lateral view hook-like, dorsally produced into digitate lobe with ventrad-directed sclerotized apex, ventral margin concave, posterior margin rounded; in caudal view apically fused to form a single continuous structure, with ventral margin emarginate. Inferior appendage bipartite with anterior basal plate not extending anterad beyond sternum IX when observed in lateral view; dorsal branch setose, in lateral view pandurate; in ventral view narrow, lateral margin angled, entire, posterior margin subacute, mesal margin slightly undulate, angled, expanding posterad into ventral branch; ventral branch setose, elongate, bearing a basal digitate lobe; in lateral view clavate, narrowing posterad and apically cuspidate; in ventral view subquadrate, mesal margin slightly angled, gradually converging mesally. Phallus long; dorsal phallic sclerite in lateral view sinuate, apex curved dorsad; apex of dorsal phallic sclerite in dorsal view truncate; endothecal membrane with 2 thin, medium-sized spines.

Material examined. ARGENTINA: Misiones: San Pedro, A [rroy]o Piray-Guazú No. , [26°37'59"S, 54°07'59"W], 22.xi.1973, O S Flint — 1 male ( NMNH) [holotype] [“ USNM Type No. 100492”]; BRAZIL: Santa Catarina: Nova Teutônia, [27°03'00"S, 52°24'00"W], x.1963, F. Plaumann — 8 males, 1 female ( NMNH) [paratypes] GoogleMaps ; Nova Teutônia , [27°11'00"S, 52°23'00"W], 300–500 m, xi.1963, F. Plaumann — 6 males ( NMNH) [paratypes] GoogleMaps ; i.1964, F. Plaumann — 5 males ( NMNH) [paratypes] ; URUGUAY: Salto: Río Uruguay, Salto Grande , [31°22'59"S, 57°58'00"W], 10.xi.1955, C S Carbonell — 1 male ( FHCU) [paratype] GoogleMaps .

Distribution. Argentina, Brazil, and Uruguay.

NMNH

Smithsonian Institution, National Museum of Natural History

USNM

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Trichoptera

Family

Polycentropodidae

Genus

Polyplectropus

Loc

Polyplectropus fuscatus Flint

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

Polyplectropus fuscatus

Flint, O. S., Jr. 1983: 28
1983
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