Polyplectropus inarmatus Flint

Chamorro, Maria Lourdes & Holzenthal, Ralph W., 2010, 2582, Zootaxa 2582, pp. 1-252 : 49-50

Polyplectropus inarmatus Flint

Figs. 16G, 21, 133

Polyplectropus inarmatus Flint, 1971: 26 . [Type locality: Brazil [Edo. Amazonas], Río Marauiá , Endstation vor langer Cachoeira; NMNH; male].

Polyplectropus inarmatus is similar to P. alienus Bueno-Soria based on the membranous and broadly deltoid intermediate appendage, the shape of the dorsal branch of the inferior appendage, the shape of the mesoventral process of the preanal appendage, and the presence of 2 elongate, robust sclerotized phallic spines. Polyplectropus inarmatus is distinguished from P. alienus by the dorsally narrower apex of the dorsal phallic sclerite, by the quadrate ventral branch of the inferior appendage (deltoid in P. alienus ), and by the basally fused endothecal phallic spines (basally free in P. alienus ).

Adult. Length of forewing 3.5–4.5 mm, n = 8. Color of head, thorax, and legs yellowish-brown.

Male genitalia. Sternum IX in lateral view rounded to subquadrate, anterior margin supramedially convex, posterior margin sinuate; in ventral view rectangular, anterior margin entire, posterior margin sinuate. Tergum X membranous, oblong, bearing dorsal microsetae. Intermediate appendage not longer than inferior appendage, broad and membranous, with long apical setae; in dorsal view deltoid, broadly rounded apically; in caudal view broadly deltoid, directed posterolaterad, basally meeting mesally. Preanal appendage tripartite; dorsolateral process bulbous, originating from dorsum of mesolateral process, bearing dorsal microsetae; mesolateral process setose; in dorsal view ovate, in lateral view broadly convex; mesoventral process setose; in lateral view hook-like, with ventrad-directed sclerotized apex, anteroventral margin sinuate, posterior margin convex; in caudal view not fused basomesally, processes slightly separated, ventral margin of process trilobed. 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, with posteroventral margin slightly produced ventrad; in ventral view narrow, lateral margin apically produced, entire, posterior margin undulate, mesal margin slightly undulate, apically expanded, becoming concave, expanding posterad into ventral branch; ventral branch setose, elongate, in lateral view lanceolate, medially produced laterad; in ventral view subquadrate, posterior margin concave, mesal margin straight, gradually converging mesally. Phallus long; dorsal phallic sclerite in lateral view sinuate, apex pandurate and dorsally sclerotized; apex of dorsal phallic sclerite in dorsal view acute; dorsolateral arm of dorsal phallic sclerite apically fused; in dorsal view tapering subapically; endothecal membrane with 1 stout, elongate, basally and medially bifurcating sclerotized spine.

Material examined. BRAZIL: Amazonas: Río Marauia, Endstation vor langer Cachoeira , Fluss tritt hier aus dem Gebirge starkem Gefalle , [00°08'00"S, 67°05'00"W], 24.i.1963, E.J. Fittkau — 1 male [holotype] ( NMNH); Rio Irapirapi , Pont Inhira , eine Tagesreise oberhalb Mundung , stark fliessendes Wasser , Wasseranstieg etwa 50 cm. in 3 Studen , [00°24'00"S, 65°02'00"W], 13.i.1963, E.J. Fittkau — 1 male ( NMNH); ECUADOR: Pastaza: 1°19'00"S, 77°28'00"W, 1200 m, 22.v.1976, J Cohen — 2 males ; Tzapino, 32 km NE Tigueno, 1°11'05"S, 77°14'00"W, 400 m, 25.v.1976, J Cohen — 6 males, 4 females ( NMNH); Sucumbios: Cuyabeno (20 km W), 00°16'00"S, 75°53'00"W, 24.iv.1976, J Cohen — 1 male ( NMNH); Limoncocha (70 mi. SE), 00°24'00"S, 76°37'00"W, 28.v.1976, J Cohen — 1 male ( NMNH); PERU: Pasco: Puerto Bermudez, Río Pichis , [10°17'47"S, 74°56'11"W], 15.vii.1920 [No data about collector]— 1 male ( NMNH) .

Distribution. Brazil, Ecuador, Perú and Surinam ( Flint 1974).