Polyplectropus guyanae 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 guyanae

description: Polyplectropus guyanae, new species   
Figs. 16C, 62, 138  
 Polyplectropus guyanae can be readily distinguished from P. peruvianus, new species by the presence of an apically bifurcating mesoventral process of the preanal appendage (completely fused apically and bearing rows of peg-like setae in P. peruvianus). Additionally, P. guyanae has a rounded apex of the intermediate appendage (concave with mesal papillate lobes bearing apical setae in P. peruvianus), an oblong apex of the dorsal phallic sclerite (ventrally produced and sclerotized in P. peruvianus), and an oblong ventral branch of the inferior appendage (narrowing apically in P. peruvianus).   
 Adult. Length of forewing 3.5–3.8 mm, n = 6. Color of head, thorax, and legs brown; setae on body grey and golden brown; tegulae with long, golden brown and grey setae; setae on wings darker brown along costal margin, rest of wing lighter shade of brown with scattered patches of grey setae.   
 Male genitalia. Sternum IX in lateral view deltoid, anterior margin entire, posterior margin submedially concave; in ventral view narrowly rectangular, anterior margin highly concave, posterior margin with median flange. Tergum X membranous, oblong, bearing dorsal microsetae. Intermediate appendage as long as inferior appendage, digitate, with a pair of long apical setae; in dorsal view digitate, apex narrowing mesad; in caudal view rounded, curved, directed laterodorsad. Preanal appendage bipartite; possible 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 elongate, digitate lobe, anteroventral margin angled, posterior margin truncate; in caudal view fused basomesally, processes slightly separated apically, ventral margin of process acute. 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; in ventral view narrow, lateral margin apically produced, sinuate and undulate, posterior margin acute, mesal margin slightly undulate, angled, expanding posterad into ventral branch; ventral branch setose, elongate, in lateral view digitate, rounded posterad; in ventral view oblong, posteromesal margin convex, gradually converging mesally. Phallus long; dorsal phallic sclerite in lateral view cylindrical, apex narrowly oblong; apex of dorsal phallic sclerite in dorsal view rounded; endothecal membrane with many short, sclerotized, peg-like spines, when everted spines arranged in a circle, dorsally not as densely packed, also visible is a horseshoe-shaped sclerite (not readily visible when endotheca is not everted).   
 Holotype male. GUYANA: Dubulay Ranch, Aramatani Cr [eek], 6°33'00"N, 57°48'00"W, 15–18.iv.1995, O S Flint —(UMSP000107501) (NMNH)   
 Paratype. GUYANA: Dubulay Ranch, Aramatani Cr [eek], 6°33'00"N, 57°48'00"W, 15–18.iv.1995, O S Flint — 2 males, 2 females (NMNH); VENEZUELA: Territorio Federal Amazonas [Estado Amazonas]: Cerro de la Neblina, small stream east side of basecamp, [00°51'00"N, 66°10'00"W], 140 m, 20–24.iii.1984, Flint & Louton — 1 male (NMNH).   
Distribution. Guyana and Venezuela.  
Etymology. This species is named for the country of Guyana where the holotype and several paratypes were collected.
description: Published as part of Chamorro, Maria Lourdes & Holzenthal, Ralph W., 2010, 2582, pp. 1-252 in Zootaxa 2582 on pages 127-128