Polycentropus charlesi Ross, 1941: 74 San Felipe Springs, Del Flint, 1968:21 Polyplectropus Polyplectropus charlesi P. kylistos P.charlesi P. kylistos P. exilis P. charlesi P. kylistos P. kylistos Polyplectropus charlesi P. kylistos P. kylistos 2582 Chamorro, Maria Lourdes Holzenthal, Ralph W. Zootaxa 2010 2010-08-31 2582 1 252 6VTHJ (Ross) Ross 1941 [151,518,1295,1321] Insecta Polycentropodidae Polyplectropus Animalia Trichoptera 112 113 Arthropoda species charlesi   Figs. 15C, 56, 123      Polycentropus charlesi Ross, 1941: 74. [ Typelocality: United States, Texas, San Felipe Springs, DelRio; INHS; male];—  Flint, 1968:21[to  Polyplectropus].   Polyplectropus charlesiis most similar to  P. kylistosbased on the pronounced ventral median projection of sternum IX, the lobate, rounded intermediate appendage, the broadly separated ventral branches of the inferior appendage, and the overall shape of the dorsal branch of the inferior appendage. In addition,  P.charlesiand  P. kylistosbear peg-like setae on both branches of the inferior appendage (absent in  P. exilis). Some specimens of  P. charlesiwith an apically narrowed dorsal branch have subapical spines on a small membranous stalk, similar to those found in  P. kylistos. However, in  P. kylistosthese stalked spines are located more basally and proximal to the ventral branch.  Polyplectropus charlesican also be distinguished from  P. kylistosby the shorter, apically rounded ventral branch of the inferior appendage, by the broader and sometimes slightly narrower and less arched dorsal branch of the inferior appendage, by the less acute apices of the mesoventral process of the preanal appendage, and by the posteriorly directed endothecal phallic spines (directed laterad in  P. kylistos).   Adult.Length of forewing 3.5–7.8 mm, n = 213. Color of head, thorax, and legs yellowish-brown.   FIGURE 56.Male genitalia of  Polyplectropus charlesi( Ross, 1941)(holotype): A—left lateral view; B—dorsal view; C—caudal view; D—ventral view; E–F—phallus: E—left lateral view; F—dorsal view; G—left inferior appendage, variation, left lateral view.  Male genitalia.Sternum IX in lateral view rounded, anterior margin highly convex, posterior margin submedially concave and ventrally produced; in ventral view rectangular, anterior margin concave, posterior margin with pronounced median projection. Tergum X membranous, oblong, bearing dorsal microsetae; lower lip of tergum X membranous, smooth, without dorsal microsetae, digitate; in dorsal view emarginate; in caudal view produced dorsad of phallocrypt. Intermediate appendage not longer than inferior appendage, digitate, with long setae throughout; in dorsal view broad, tapering mesoventrally to subacute apex; in caudal view digitate, curved, directed mesally; median papillate lobe very small, flanking phallocrypt laterally, bearing small apical setae. Preanal appendage bipartite; apparently with basal remnant of dorsolateral process of preanal appendage; mesolateral process setose; in dorsal view oblong, in lateral view orbicular; mesoventral process setose; in lateral view digitate, directed ventrad, anteroventral margin concave, posterior margin convex; in caudal view ventral margin of process truncate, bearing sclerotized spines. 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, curved ventrad, variant form lanceolate and curved ventrad, bearing 1–2 sclerotized spines; in ventral view narrow, lateral margin convex, entire, posterior margin subacute, mesal margin sinuate, straight, becoming concave, expanding posterad into ventral branch; ventral branch setose, short, bearing apical sclerotized spine; in lateral view ovate; in ventral view rounded, mesal margin concave, gradually converging mesally, ventral branches greatly separated mesally from each other. Phallus long; dorsal phallic sclerite in lateral view sinuate, apex curved dorsad; apex of dorsal phallic sclerite in dorsal view truncate; dorsolateral arm of dorsal phallic sclerite in lateral view digitate; in dorsal view digitate, not extending beyond apex of phallic sclerite, apex rounded; endothecal membrane with 2 medium-sized, lightly sclerotized spines. Material examined.  MEXICO: Durango:Peñon Blanco (La Concha), [ 24°47'23"N, 104°02'12"W], 16.vii.1985, E Barrera— 1 male(IBUNAM);  Guerrero:Río Bejucos, [ 17°11'00"N, 99°24'00"W], 8.vii.1999, A Rojas, & R. Gavino— 1 male(IBUNAM);  Michoacán:Apatzingan, W. of Apatzingan 5 mi, 19°04'59"N, 102°20'59"W, 366 m, 13.viii.1941, Hoogstraal— 1 male; Aguililla, 31.vii.1985, R Barba, & F Arias— 1 male;  Oaxaca:Tuxtepec, 18°06'00"N, 96°07'00"W, 5.xii.1933, M. Fraire— 1 male; Putla, Río Las Peñas, [ 17°02'00"N, 97°56'00"W], 3.iii.1986, E. Mariño— 1 male, 1 female(IBUNAM); Chiltepec, [ 16°08'59"N, 95°55'59"W], 11.xii.1937, A. Dampf— 1 male(INHS); Totoltepec, [ 15°53'51"N, 96°28'37"W], 2.xi.1987, R. Barba, F. Arias, E. Barrera— 1 male(IBUNAM);  Puebla:Cuetzalan Rancho Pahuata 14.6 kmde Cuetzalan, [ 20°02'00"N, 97°31'00"W], 29.vi.1996, Contreras and Barba— 1 male, 3 females(IBUNAM);   San LuisPotosí:Tamazunchale, [ 21°16'00"N, 98°46'59"W], 29.iii.1951, Lattin & Walker— 1 male; Palitla, [ 21°16'00"N, 98°49'59"W], 5.viii.1966, O S Flint— 1 male, 2 females(NMNH); 2 kmS of Tamasunchale (R. 1 km363), [ 21°16'00"N, 098°47'00"W], 213 m, 31.v.1948, W. Nutting & F Werner— 1 male;  Tamaulipas: Santa Engracia (Hacienda), [ 24°01'00"N, 99°12'00"W], 21.iii.1936, A. Dampf— 1 male(INHS); 9.iii.1939, CCP— 2 males(INHS); 44 mi.N. Ciudad Victoria, [ 23°43'00"N, 99°07'59"W], 16.viii.1953, R. B. & J.M. Selander— 1 male(INHS);  Veracruz:Chicontepec, [ 20°58'00"N, 98°10'00"W], 14.x.1975, J Bueno-Soria— 1 male(IBUNAM); Tebanca 15 kmS.E. Estacion de Biología Los Tuxtlas, [ 18°23'00"N, 95°00'00"W], 3.iii.1988Barba & Barrera— 5 males, 5 females(IBUNAM); Catemaco, Tebanca, [ 18°25'00"N, 95°07'00"W], E Barrera— 1 male(IBUNAM); Los Tuxtlas, Río La Palma, 2.xii.1988, H & R Barba— 1 male(IBUNAM);  UNITED STATES: Arizona:Apache Co., 5 miW Eagar, Little ColoradoR., [ 34°06'40"N, 109°17'27"W], 29.vi.1961, Kingsolver— 2 males(INHS); Yavapai Co., Converg. Oak Cr. & Verde R., [ 34°33'42"N, 112°22'58"W], 10.ix.1976, Sanderson— 1 female(INHS);  Texas:Bandera County, Winans Creek@ TX Hwy16 ca. 4 miN. Bandera, 29°43'35"N, 99°04'24"W, 12.iv.1992, Moulton & Stewart— 11 males(DRC); Blanco Co., Pedernales River, in Pedernales Falls State Park, downstream falls @ picnic area, 30°05'52"N, 98°25'16"W, 244 m, 24.vii.1985, Brigham & Brower— 5 males(INHS); Guadalupe Co., San Marcos River@ TX 1979 bridge, S. Martindale, ca 5 mi.ESE I-35 @ San Marcos(city), 29°49'56"N, 97°50'30"W, 149 m, 5.ix.1986, AR Brigham— 18 males(INHS); Hays Co., San Marcos Riverin San Marcos, Rio Vista Dam @ Cheatham Street/Houston Rd., 29°52'45"N, 97°55'55"W, 171 m, AR Brigham— 1 male(INHS); Kerr Co., North Fork, Guadalupe River @ TX1340 about 7 miw intersection of TX1340 & TX 39 (Bee Caves Creek), 30°03'25"N, 99°25'10"W, 561 m, 23.vii.1985, Brigham & Brower— 1 male(INHS); North Fork, Guadalupe River @ TX 1340 1 miW Intersection of TX 1340/TX 39, 30°04'25"N, 99°21'17"W, 536 m, Brigham & Brower— 1 male(INHS); [Val Verde County], San Felipe Springs, DelRio, [ 29°22'06"N, 100°53'06"W], 19.iv.1939, H. H & J. A. Ross— 1 male(INHS) [ holotype] [“INHS Trichop. 24566”].   Specimensexamined of variable forms of  P.charlesi:  MEXICO: Chiapas:nr. Pijijiapan,  5.vii.1965, P J Spangler— 1 male, 1 female( NMNH);  Chintul, Río Chintul(trib. R. Grijalva) Rt.187, 17°14'33"N, 93°35'07"W,  20.ix.1996, Bueno-Soria, Barba, Contreras— 6 males( IBUNAM);   Durango: Peñon Blanco, Balneario Belem, [ 24°47'23"N, 104°02'13"W],  1640 m,  10.vii.1985, E Barrera— 6 males, 2 females( IBUNAM);   Oaxaca: Valle Nacional, [ 17°46'59"N, 96°19'00"W],  2.iii.1932, A. Dampf— 3 males( INHS);  Putla, Río Las Peñas, [ 17°02'00"N, 97°56'00"W],  3.iii.1983, E Mariño— 1 male, 1 female( IBUNAM);  Rancho Monter, [ 16°53'53"N, 96°24'51"W],  14.xii.1937, A. Dampf— 3 males( INHS);   16.xii.1937, A. Dampf— 2 males( INHS);  Chiltepec, [ 16°08'59"N, 95°55'59"W],  9.xii.1937, A. Dampf— 2 males( INHS);   11.xii.1937, A. Dampf— 2 males( INHS);   Tabasco: Municipio Huimanguillo, Est.10, Arroyo Las Flores, Villa de Gpe.2 Secc. Los Chimalapas, km 5 +920 carr, Malpasito-Carlos A. Madrazo, 17°22'03"N, 93°36'15"E,  25.iii.1998, Bueno-Soria& Barba— 8 males, 3 females( IBUNAM);  Río Teapa, Villahermosa, [ 17°59'00"N, 92°55'00"W],  6.v.1985, H. Velasco— 9 males, 2 females( IBUNAM);   Veracruz: Ocotal, Texisapa, [ 20°36'00"N, 98°19'00"W],  8.xii.1985, R Barba— 1 male( IBUNAM);  Tebanca 15 kmS.E. Estacion de Biología Los Tuxtlas, [ 18°23'00"N, 95°00'00"W],  3.iii.1988, Barba& Barrera— 38 males, 1 female( IBUNAM);  Catemaco, Tebanca, [ 18°25'00"N, 95°07'00"W], R Barba, et al.— 16 males, 7 females( IBUNAM);   UNITED STATES: Arizona: Coconino Co.,  Oak Cr. Grasshopper Pt., [ 35°59'00"N, 112°11'51"W],  12.vii.1977, Sanderson— 1 male( INHS);  Oak Cr. Chavez Crossing, [ 35°59'40"N, 112°11'00"W],  20.vi.1961, Kingsolver— 2 males( INHS);   20.vii.1977, Sanderson— 1 male( INHS);   20.vi.1961, Kingsolver— 2 females( INHS);  Navajo County, 9 mi.N. White River, North Fork White River, nr Roberts Ranch, [ 35°07'27"N, 109°32'15"W],  28.vi.1961, Kingsolver— 2 males, 5 females( INHS);  Yavapai Co., Oak Cr.at Mormon Crossing, 34°37'01"N, 110°47'13"W,  3–4.v.1984, Sanderson— 2 males, 1 female( INHS);  Converg. Oak Cr.& Verde R., [ 34°33'42"N, 112°22'58"W],  3.viii.1978, Sanderson— 1 male( INHS);  Oak Cr., Page Spgs., [ 34°46'03"N, 111°53'34"W],  14.vii.1977, Sanderson— 1 male, 1 female( INHS). Distribution. Mexico, Nicaragua, Panama, and USA( Flint et al. 1999). Remarks. The dorsal branch of the inferior appendage varies across the entire range of this species. The holotypehas an apically broader dorsal branch of the inferior appendage, becoming narrower in other specimens. Even though the different forms have been collected from the same localities, no 2 forms were collected together. The observed variability of the dorsal branch among the specimens examined was not discrete, but instead was continuous. When the dorsal branch is apically broad, 2 (or sometimes more) apical spines are present. In the narrower dorsal branches, these spines are retained but the more basal spine also retains a small basal process or stub. This spine-and-stub complex resembles those present on the inferior appendage of  P. kylistos( Fig. 58A). However, in  P. kylistosthe spine-and-stub complex is basal and closer to the ventral branch. 1965-07-05 NMNH P J Spangler Mexico Pijijiapan Specimens 115 116 2 1 1 Chiapas 1996-09-20 IBUNAM Bueno-Soria & Barba & Contreras Mexico Chintul 17.2425 Grijalva 21 -93.58528 Rio Chintul 115 116 6 6 Chiapas 1985-07-10 IBUNAM E Barrera Mexico 1640 24.789722 Balneario Belem 21 -104.03694 Penon Blanco 115 116 8 2 6 Durango [307,1432,471,498] 1932-03-02 A, INHS Dampf Mexico 17.783054 Valle Nacional 21 -96.316666 115 116 3 3 Oaxaca [151,1432,512,538] 1983-03-03 IBUNAM E Marino Mexico 17.033333 Rio Las Penas 21 -97.933334 Putla 115 116 2 1 1 Oaxaca [151,1231,552,578] 1937-12-14 A, INHS Dampf Mexico 16.898056 Rancho Monter 21 -96.41417 115 116 3 3 Oaxaca 1937-12-16 A, INHS Dampf Mexico 115 116 2 2 Oaxaca [475,1432,592,618] 1937-12-09 A, INHS Dampf Mexico 16.149721 Chiltepec 21 -95.93305 115 116 2 2 Oaxaca [151,646,632,658] 1937-12-11 A, INHS Dampf Mexico 115 116 2 2 Oaxaca 1998-03-25 A, IBUNAM Bueno-Soria & Barba Mexico Municipio Huimanguillo 17.3675 Arroyo Las Flores 21 93.604164 Est. 115 116 11 3 8 Tabasco 1985-05-06 IBUNAM H. Velasco Mexico 17.983334 Villahermosa 21 -92.916664 Rio Teapa 115 116 11 2 9 Tabasco 1985-12-08 IBUNAM R Barba Mexico 20.6 Texisapa 21 -98.316666 Ocotal 115 116 1 1 Veracruz de Ignacio de la Llave 1988-03-03 IBUNAM Barba & Barrera Mexico 18.383333 Estacion de Biologia Los Tuxtlas 21 -95.0 Tebanca 115 116 39 1 38 Veracruz de Ignacio de la Llave IBUNAM R Barba Mexico 18.416666 Tebanca 21 -95.11667 Catemaco 115 116 23 7 16 Veracruz de Ignacio de la Llave 1977-07-12 INHS Sanderson United States of America Coconino Co. 35.983334 Oak Cr. Grasshopper Pt. 19 -112.1975 Oak Cr. Grasshopper Pt. 115 116 1 1 Arizona 1961-06-20 INHS Oak Cr. Chavez Crossing & Kingsolver United States of America 35.994446 19 -112.183334 115 116 2 2 Arizona [909,1432,992,1018] 1977-07-20 INHS Sanderson United States of America 115 116 1 1 Arizona [151,661,1032,1058] 1961-06-20 INHS Kingsolver United States of America 115 116 2 2 Arizona 1961-06-28 INHS Kingsolver United States of America Navajo County 35.124165 North Fork White River 19 -109.5375 White River 115 116 7 5 2 Arizona 1984-05-03 1984-05-04 1984-05-03 INHS Sanderson United States of America Yavapai Co. 34.616943 Mormon Crossing 19 -110.78694 Oak Cr. 115 116 3 1 2 Arizona [254,1432,1152,1178] 1978-08-03 INHS Converg. Oak Cr. & Verde R. & Sanderson United States of America 34.561665 19 -112.38278 115 116 1 1 Arizona [151,1337,1192,1218] 1977-07-14 INHS Oak Cr. & Sanderson United States of America 34.767498 Page Spgs. 19 -111.89278 115 116 2 1 1 Arizona