Polyplectropus denticulus Bueno-Soria, 1990: 369 Polyplectropus denticulus P. thilus (Denning) P. yolandae Chamorro-Lacayo & Holzenthal P. denticulus P. yolandae 2582 Chamorro, Maria Lourdes Holzenthal, Ralph W. Zootaxa 2010 2010-08-31 2582 1 252 6W5HL Bueno-Soria Bueno-Soria [151,626,991,1017] Insecta Polycentropodidae Polyplectropus Animalia Trichoptera 203 204 Arthropoda species denticulus   Figs. 105, 127      Polyplectropus denticulus  Bueno-Soria, 1990: 369. [ Typelocality: Costa Rica, Limón, Río General, Pacuare; NMNH; male.]   Polyplectropus denticulusis similar to  P. thilus(Denning)and  P. yolandaeChamorro-Lacayo & Holzenthal, but differs in having a shorter, rounded intermediate appendage, which is almost the same size as the papillate lobe and an apically acute mesoventral process of the preanal appendage. Additionally,  P. denticulushas a relatively narrower dorsal branch of the inferior appendage than  P. yolandae.   Adult.Length of forewing 3.5–5.5 mm, n = 16. Color of head, thorax, and legs yellowish-brown; setae on body grey and golden brown; setae on wings yellow with small patches of brown setae.  Male genitalia.Sternum IX in lateral view deltoid, anterior margin sinuate and submedially produced, posterior margin sinuate and submedially concave; in ventral view rectangular, anterior margin concave, posterior margin with median flange. Tergum X membranous, oblong, bearing dorsal microsetae. Intermediate appendage not longer than inferior appendage, digitate, with long setae throughout; in dorsal view subquadrate; in caudal view digitate, directed posterolaterad; 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 mesally into acute apex; mesolateral process setose; in dorsal view obovate, in lateral view orbicular; mesoventral process setose; in lateral view hook-like, with ventrad-directed sclerotized apex, anteroventral margin concave, posterior margin rounded; in caudal view processes separated, ventral margin of process acute, with ventrolateral margin produced ventrad. 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, posterior margin truncate; in ventral view narrow, lateral margin slightly convex, entire, posterior margin rounded, mesal margin slightly undulate, angled, expanding posterad into ventral branch; ventral branch setose, elongate, bearing robust, sclerotized spines along entire dorsal surface; in lateral view digitate, narrowing posterad; in ventral view deltoid, posteromesal margin angled, gradually converging mesally. Phallus long; dorsal phallic sclerite in lateral view sinuate, apex oblong; endothecal membrane without embedded spines.   FIGURE 105.Male genitalia of  Polyplectropus denticulusBueno, 1990. (holotype): A—left lateral view; B—dorsal view; C—caudal view; D—ventral view; E—phallus, lateral view.   Material Examined.  COSTA RICA: Guanacaste: QuebradaGarcia,  10.6 kmENE Quebrada Grande, 10°51'43"N, 85°25'41"W,  470 m,  8.iii.1986, Holzenthal& Fasth— 1 male( UMSP);  Parque Nacional Guanacaste, QuebradaAlcornoque, El Hacha, 11°00'32"N, 85°34'37"W,  250 m,  26.vii.1987, Holzenthal, Morse& Clausen— 1 male( UMSP);  Río Orosí, Estación Pitilla, 10°59'28"N, 85°25'41"W,  700 m,  22– 25.v.1990, Holzenthal& Blahnik— 1 male( UMSP);   Heredia: Parque Nacional Braulio Carrillo, Río Peje, Puesto El Ceiba, 10°19'37"N, 84°04'41"W,  480 m,  29–31.v.1990, Holzenthal, Blahnik& Muñoz— 1 male( UMSP); [  Limón]: Río General, Pacuare,  1.vii.1967, Flint& Ortiz— 1 male[ holotype] ( NMNH) [“ USNM Type No.104449”];   Puntarenas: Río Jaba, rock quarry, 1.4 km(air) W Las Cruces, 8°47'24"N, 82°58'12"W,  1150 m,  15.iii.1991, Holzenthal, Muñoz& Huisman— 3 males, 1 female( UMSP);  San Miguel,  10– 14.xi.1991, F. A. Quesada— 3 males( UMSP);   San José: Reserva Biológica Carara, Río del Sur, 1.5 km(rd) S Carara, 9°46'08"N, 84°31'52"W,  160 m,  13.iii.1991, Holzenthal, Muñoz& Huisman— 1 male( UMSP);   NICARAGUA: Jinotega: Cerro Muzú, 14°33'00"N, 85°07'00"W,  220 m,  7–10.ix.1997, Maes& Hernandez— 1 male( MEL). Distribution. Costa Rica, Mexico( Bueno-Soria 1990), and Nicaragua. Remarks. The right dorsal branch of the inferior appendage and the left mesoventral process of the preanal appendage of the holotypeare broken. Paratypesfrom Alajuelawere actually  P. yolandae. [435,701,1106,1129] NMNH Costa Rica Pacuare Rio General 203 204 1 Limon 1986-03-08 UMSP Holzenthal & Fasth Costa Rica 470 10.861945 Quebrada 21 -85.428055 Material Examined. 204 205 1 1 Guanacaste 1987-07-26 UMSP Holzenthal & Morse & Clausen Costa Rica 250 11.008889 Quebrada 21 -85.57694 Parque Nacional Guanacaste 204 205 1 1 Guanacaste 1990-05-22 1990-05-25 1990-05-22 UMSP Holzenthal & Blahnik Costa Rica 700 205 206 10.991112 Estacion Pitilla 21 -85.428055 Rio Orosi 204 205 1 1 Guanacaste 1990-05-29 1990-05-31 1990-05-29 UMSP Holzenthal & Blahnik & Munoz Costa Rica Parque Nacional Braulio Carrillo 480 10.326944 Puesto El Ceiba 21 -84.07806 Rio Peje 205 206 1 1 Heredia 1967-07-01 NMNH, USNM Flint & Ortiz & Type No. Costa Rica Pacuare Rio General 205 206 1 1 Limon holotype 1991-03-15 UMSP Holzenthal & Munoz & Huisman Costa Rica 1150 8.790001 Las Cruces 21 -82.97 Rio Jaba 205 206 4 1 3 Puntarenas holotype 1991-11-10 1991-11-14 1991-11-10 A, UMSP Quesada Costa Rica 205 206 3 3 Puntarenas holotype 1991-03-13 UMSP Holzenthal & Munoz & Huisman Costa Rica Reserva Biologica Carara 160 9.768888 Carara 21 -84.53111 Rio del Sur 205 206 1 1 Puntarenas holotype 1997-09-07 1997-09-10 1997-09-07 MEL Maes & Hernandez Nicaragua 220 14.55 Cerro Muzu 21 -85.11667 205 206 1 1 Jinotega holotype