Polyplectropus cuzcoensis Chamorro & Holzenthal 2010, new species
Creators: name: Chamorro, Maria Lourdes
name: Holzenthal, Ralph W.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Polycentropodidae
Polyplectropus
Polyplectropus cuzcoensis

description: Polyplectropus cuzcoensis, new species   
Figs. 103, 135  
 Polyplectropus cuzcoensis is readily distinguished from all species in the group by the cylindrical mesoventral process of the preanal appendage, which bears microsetae (hook-like in other species of the group), by the spiny apex of the dorsolateral process of the preanal appendage (unmodified in all other species in the group), and by the more rounded intermediate appendage. Polyplectropus cuzcoensis is similar to P. denticulus Bueno and P. deltoides (Yamamoto) on the overall shape of the inferior appendage, on the presence of a dorsolateral process of the preanal appendage, and on the overall shape of the intermediate appendage.   
 Adult. Length of forewing 5.5–7.5 mm, n = 9. Color of head, thorax, and legs yellowish-brown; setae on body grey and golden brown; tegulae with long, golden brown and grey setae; setae on wings golden brown along costal margin with patches of grey setae interspersed along margin and on most of wing surface.   
 Male genitalia. Sternum IX in lateral view deltoid, anterior margin entire, posterior margin sinuate and submedially produced; in ventral view rectangular, anterior margin 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 caudal view produced dorsad of phallocrypt. Intermediate appendage not longer than inferior appendage, digitate, with long and short setae throughout; in dorsal view broad, tapering mesoventrally to rounded apex; in caudal view rounded, directed posterodorsad; median papillate lobe small, flanking phallocrypt laterally, bearing small apical setae. Preanal appendage tripartite; dorsolateral process elongate, originating from dorsum of mesolateral process, directed anterad, recurved posteromesad then posterolaterad, tapering into acute apex, with small apical, scale-like spines; mesolateral process setose; in dorsal view oblong, in lateral view orbicular; mesoventral process setose; in lateral view cylindrical, directed ventrad, ventral margin concave, posterior margin angled; in caudal view processes separated, ventral margin of process subacute, with basolateral margin produced laterad. 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, apex truncate to rounded; in ventral view narrow, lateral margin convex, entire, posterior margin rounded, mesal margin undulate, apically expanded, becoming concave, expanding posterad into ventral branch; ventral branch setose, short and basally broad, bearing robust, sclerotized spines along entire dorsal surface; in lateral view digitate, narrowing posterad; in ventral view deltoid, posteromesal margin convex, gradually converging mesally. Phallus short; dorsal phallic sclerite in lateral view sinuate, apex truncate tapering ventrally; apex of dorsal phallic sclerite in dorsal view rounded; dorsolateral arm of dorsal phallic sclerite in lateral view tapering subapically; in dorsal view tapering subapically; endothecal membrane without embedded spines.   
 Female genitalia. Similar to the female of P. blahniki.   
 Holotype male: PERU: Cuzco: Paucartambo to Pilcopata rd., river at Puente Unión, 13°04'13"S, 71°34'00"W, 1670 m, 21–23.vi.1993, Blahnik & Pescador —(UMSP000107432) (NMNH).   
 Paratypes: PERU: Cuzco: Paucartambo to Pilcopata rd., river at Puente Unión, 13°04'13"S, 71°34'00"W, 1670 m, 21–23.vi.1993, Blahnik & Pescador — 2 males, 4 females (NMNH); Paucartambo to Pilcopata rd., Río San Pedro at Puente San Pedro, 13°03'18"S, 71°32'47"W, 1445 m, 24.vi.1993, Blahnik & Pescador — 1 male, 1 female (UMSP).   
Distribution. Peru.  
Etymology. Named for the type locality, Cuzco, the former capital city of the Inca Empire.
description: Published as part of Chamorro, Maria Lourdes & Holzenthal, Ralph W., 2010, 2582, pp. 1-252 in Zootaxa 2582 on pages 200-202