Phylloicus amazonas, Prather Table Of Contents, 2003

Prather Table Of Contents, Aysha L., 2003, Revision of the Neotropical caddisfly genus Phylloicus (Trichoptera: Calamoceratidae), Zootaxa 275 (1), pp. 1-214 : 26-27

Phylloicus amazonas , new species

Figs. 17, 18, 106

The male genitalia of P. amazonas are most similar to those of P. chalybeus , but these two species differ in the distinctive wing pattern of P. amazonas . The wing pattern ( Fig. 106) is similar to P. paprockii ( Fig. 112), but differs in the black border of the large white patch.

Adult. Forewing length 8.2­ 9 mm, n = 9.

Head golden brown. Maxillary palps golden brown, covered with dark brown setae. Antenna twice forewing length; golden brown. Dorsal pterothorax golden brown; ventrolateral thorax golden brown. Legs golden brown. Metathoracic leg of male without posterior fringe. Tibial spur formula 2,4,2. Forewing flat; dark brown; with single transverse band; distal band white, not reaching either wing margin, 1/2 width of wing or less, oval, bordered with black; with single basal stripe, golden; sparse patches of white or ivory setae in basal cells; large dark patch and sparse white setae at location of proximal band ( Fig. 106). Hind wing basal brush present in female.

Male. Preterminalic abdominal terga without anteromesal notches. Corematic structures absent, terga III­V unmodified, without membranous lobes or sclerotized processes. Sternum VII with short, acute anteromesal process. Sternum VIII similar to anterior sterna, sternum IX not elongate. Tergum IX without mesal ridge; posterior margin smoothly rounded ( Fig. 17B); lateral ridge absent; dorsal pleural setae approximately 4, ventral pleural setae approximately 2 ( Fig. 17A); sternum IX without mesolateral ridges; sternum IX ( Fig. 17C). Preanal appendage approximately length of tergum X, of uniform diameter throughout length, setae long, but not filamentous or longer than appendage ( Fig. 17A, B). Tergum X without basal lobes; basodorsal process long and digitate; basolateral processes long, length at least twice diameter; apex, in lateral view, rounded, in dorsal view, notched, notch round; apicodorsal and dorsolateral margins bearing single row of short fine setae ( Fig. 17A, B). Harpago long, curving mesally and tapering apically; peglike setae absent ( Fig. 17A, C). Phallic endotheca with single long apical lobe and paired basolateral lobes, basolateral lobes multilobed; phallotremal sclerites very large, longest dimension twice diameter of phallobase; dorsal sclerite two­armed, in lateral view U­shaped ( Fig. 17D, E).

Female. Preterminal abdominal terga without anteromesal notches. Sternum VII with short pointed anteromesal process. Tergum VIII without posterolateral brush; sternum VIII cleft posteromesally to anterior ridge; sternum VIII ( Fig. 18C). Tergum IX without mesal ridge ( Fig. 18B). Sternum IX anterior and posterior lobes darkly sclerotized and striate, with deep sublateral invaginations ( Fig. 18A). Tergum X appendage shorter than mesal lobe, base indistinct, apex triangular; mesal lobe lightly sclerotized; digitate lateral processes absent ( Fig. 18B). Sternum X with patches of short fine setae posterolaterally to anal opening ( Fig. 18A). Vaginal apparatus anterior and posterior sclerites equal in length; anterior sclerite truncate anteriorly, posterolateral projections acute; posterior sclerite ovoid; posterior end of spermatheca a sclerotized ovoid ( Fig. 18A).

Holotype male: VENEZUELA: Amazonas: Cerro de la Neblina, Basecamp, 00°51'N 66°10'W, 140 m, 10­20.ii.1985, Spangler, Faitoute, & Steiner ( NMNH).

Paratypes: BRAZIL: Amazonas: Manaus, Ponta Negra , 19.xi.1976, Penny — 1 male ( INPA) ; Res. Ducke , 26 km E Manaus, 29.x.1976 — 1 female ( INPA) ; GUYANA: Nouveau Chantier, May, Le Moult — 1 male ( MCZ) ; Warniabo Cr., Dubulay Ranch, 05°39'48”N, 57°53'24"E, 10­11.iv.1994, Flint — 2 females ( NMNH) ; 14­19.iv.1995, Flint — 1 male ( NMNH) ; PERU: Loreto: Callicebus Research Station, Mishana, Río Nanay , 25 km SW Iquitos, 120 m, 10­17.i. 1980, Heppner — 1 female, 1 male ( NMNH) .

Distribution. Brazil, Guyana, Peru, Venezuela.

Etymology. This species is named for the Brazilian and Venezuelan states of Amazonas, where it was collected.