Phylloicus angustior Ulmer 1905
Creators: name: PRATHER, AYSHA L.
Publisher: name: Zenodo
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Calamoceratidae
Phylloicus
Phylloicus angustior

description: Phylloicus angustior Ulmer
Figs. 19, 20
Phylloicus angustior Ulmer, 1905a:78 [Type locality: Brazil, Rio Gr. do Sul [sic]; NMW; male]. — Flint 1966:11 [lectotype male]. — Botosaneanu & Alkins­Koo 1993:38 [distribution].
I was unable to locate a specimen with Flint’s lectotype label; it is not possible to determine if the specimens from Vienna I examined are those examined by Flint; the label data are the same. Phylloicus angustior is distinguished by the acute apex of tergum X (in lateral view; Fig. 19A) and the unpatterned forewings.
Adult. Forewing length 12.1­14.4 mm, n = 105.
Head dark brown, with dorsomesal crest of chestnut brown setae. Maxillary palps chestnut brown. Antenna twice forewing length; dark brown, with narrow patches of pale sensilla on anteromesal surface of each flagellomere. Dorsal pterothorax dark brown; ventrolateral thorax golden. Femora golden; tibiae dark brown; foretarsi dark brown; mesotarsi pale tan; metatarsi dark brown. Metathoracic leg of male with posterior fringe of long setae, setae dark. Tibial spur formula 2,4,4. Forewing flat; dark brown; with golden bands and dark patches; with single basal stripe, golden; darker setae surrounding thyridial spot, extending to posterior margin; two short dark bands in anterodistal portion of wing; with small golden spot marking thyridium. Hind wing basal brush absent.
Male. Preterminalic abdominal terga with anteromesal notch. Corematic structures absent, terga III­V unmodified, without membranous lobes or sclerotized processes. Sternum VII without anteromesal process. Sternum VIII enclosing base of elongate sternum IX; posteromesal process notched, notch deep and round or narrow and parallel­sided (Fig. 19A, C). Tergum IX deeply notched anteriorly, margins of notch ridged; posterior margin with acute mesal projection (Fig. 19B); lateral ridge absent; dorsal pleural setae approximately 10, ventral pleural setae absent (Fig. 19A). Preanal appendage longer than tergum X, but less than 11/2 times length, widest apically, setae filamentous, longer than appendage (Fig. 19A, B). Tergum X without basal lobes; basodorsal process short and digitate; basolateral processes of varying length and often asymmetrical; apex, in lateral view, acute, in dorsal view, notched, notch round; with row of short setae on lateral surfaces and apicodorsally (Fig. 19A, B). Harpago rounded; peglike setae many, apical (Fig. 19A, C). Phallotremal sclerites average size, longest dimension less than diameter of phallobase; dorsal sclerite ovoid, in dorsal view horseshoe­shaped (Fig. 19D, E).
Female. Preterminal abdominal terga with anteromesal notch. Sternum VII without anteromesal process. Tergum VIII without posterolateral brush; sternum VIII with shallow posteromesal notch; sternum VIII (Fig. 20C). Tergum IX with very short mesal ridge (Fig. 20B). Sternum IX anterior and posterior lobes darkly sclerotized and striate, punctate, with patch of lightly sclerotized cuticle lateral to vaginal opening (Fig. 20A). Tergum X appendage length equal to mesal lobe, base indistinct, apex triangular; mesal lobe lightly sclerotized; digitate lateral processes length approximately equal diameter and often asymmetrical (Fig. 20B). Sternum X with patches of short fine setae posterolaterally to anal opening (Fig. 20A). Vaginal apparatus anterior and posterior sclerites equal in length; anterior sclerite rounded anteriorly, posterolateral projections absent; posterior sclerite triangular; posterior end of spermatheca a sclerotized expanded tube (Fig. 20A).
Material examined. ARGENTINA: Misiones: 10.xi.1909, Jørgensen — 1 male (MCZ); 20.xii.1909, Jørgensen — 1 female (MCZ); 6 km E El Dorado, 22.xi.1973, Flint — 1 female (NMNH); Ao. Coati, 15 km E San Jose, 18­19.xi.1973, Flint — 2 males (NMNH); Ao. Piray Mini W, Dos Hermanas, 23.xi.1973, Flint — 2 males (NMNH); Ao. Saura, 9 km N, L.N. Alem, 20.xi.1973, Flint — 3 males (NMNH); San Pedro, Arroyo Piray­Guazú, 22.xi.1973, Flint — 2 males (NMNH); BRAZIL: Goiás: Goiás, 7.vii.1984, Becker — 1 male (UMSP); Minas Gerais: Aldeia de Cachoeira das Pedras, 20°06'49”S, 44°01'25"W, 925 m, 28­29.ix.2000, Paprocki & Braga — 3 males, 3 females (MZUSP); — 1 male, 1 female (NMNH); — 16 males, 10 females (UMSP); 9.x. Paprocki & Isaac — 5 males, 7 females (UMSP); Cachoeira do Abacaxi, Vale do Tropeiro, 20°12'16”S, 43°38'10"W, 1120 m, 30.ix.2000 — 1 male (UMSP); Ibitipoca, Sitio of Anestis Papadopolous, 21°43'14”S, 43°54'33"W, 1200 m, 23.x.2000, Paprocki — 1 female (UMSP); Rio das Velhas, upstream from São Bartolomeu, 20°18'39”S, 43°33'57"W, 18.ix.1998, Paprocki & Amarante — 8 males (UMSP); Rio Mainarte, bridge on Cibrão road, 20°27'15”S, 43°24'06"W, 700 m, 19.ix.1998, Paprocki & Amarante — 3 females (UMSP); trib. of Rio Parauninha, Serra do Breu, Faz. do Zé da Mata, 19°07'55”S, 43°37'24"W, 15.ii.1999, Paprocki & Braga — 3 males, 4 females (UMSP); Estação Ecológica de Tripuí, Córrego Botafogo, 20°22'54”S, 43°33'37"W, 1100 m, 16.xii.1998, Paprocki & Amarante — 1 female (UMSP); 23.i.1999, Amarante — 1 male (UMSP); Estação Ecológica do Tripuí, Córrego Tripuí, 20°23'22”S, 43°32'32"W, 1070 m, 21.ii.1999 — 1 female (UMSP); Serra do Cipó, Capão da Mata, 19°19'21”S, 43°32'15"W, 1170 m, 10.iii.1996, Holzenthal, Rochetti, & Oliveira — 2 females (UMSP); km 126, 15.xii.1973, Froehlich — 2 males (NMNH); Parana: Rio Cascata, Graciosa, road to Morretes, 25°20'13”S, 48°53'58"W, 750 m, 10.i.1998, Holzenthal, Melo, & Almeida — 1 male (UMSP); Rio Grande do Sul: Staudinger & Bang­Haas — 1 male (DEI); Stieglmayr — 1 male, lectotype male (NMW); Pelotas, 20.iv.1958, Biezanko — 1 male (BMNH); Santa Catarina: Seara (Nova Teutônia), 27°11'00”S, 52°23'00"W, 300­500 m, 11.x.1936, Plaumann — 1 male (BMNH); 7.ix.1937, Plaumann — 1 male (BMNH); 1.x.1964, Plaumann — 1 male (NMNH); Urubici, Morro da Igreja, Cachoeira Veu da Noiva, 28°04'36”S, 49°31'05"W, 1300 m, 5.iii.1998, Holzenthal, Froehlich, & Paprocki — 1 male (UMSP); PARAGUAY: Itapua: Pirapo, 28­31.xii.1971, Peña G. — 5 males (NMNH); Paraguari: Parque Nacional Ybycui, Arroyo Mina, 5.x.1984, Bonace — 1 male (NMNH); URUGUAY: Cerro Largo: Arroyo Quebrache, 1.iii.1959, Carbonell — 3 males (NMNH).
Distribution. Argentina, Brazil, Paraguay, Uruguay.
description: Published as part of PRATHER, AYSHA L., 2003, Revision of the Neotropical caddisfly genus Phylloicus (Trichoptera: Calamoceratidae), pp. 1-214 in Zootaxa 275 (1) on pages 27-29, DOI: 10.11646/zootaxa.275.1.1, http://zenodo.org/record/5019235