Phylloicus adamsae, new species

Figs. 13, 14

Phylloicus "n. sp. 3" Flint, 1996:425

This species can be recognized by the uniform golden color of the forewings. Phylloicus adamsae is distinguished by the very short and wide (often nearly circular) preanal appendages (Fig. 13A, B).

Adult. Forewing length 9­11 mm, n = 18.

Head golden brown. Maxillary palps golden brown, covered with dark brown setae. Antennae twice forewing length; chestnut brown. Prothorax golden brown; dorsal pterothorax golden brown; ventrolateral thorax pale tan. Legs pale tan. Metathoracic leg of male with posterior fringe of long setae, setae pale. Tibial spur formula 2,4,4. Forewing flat; golden brown; without colored markings; distal fringe slightly darkened. Hind wing basal brush absent.

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 enclosing base of elongate sternum IX; posteromesal process notched (Fig. 13A, C). Tergum IX without mesal ridge; posterior margin with round narrow mesal projection; thinly sclerotized mesally (Fig. 13B); lateral ridge absent; dorsal pleural setae approximately 10, ventral pleural setae approximately 6 (Fig. 13A). Preanal appendage less than 2/3 length of tergum X, as long as wide, rounded apically, setae long, but not filamentous or longer than appendage (Fig. 13A, B). Tergum X without basal lobes; basodorsal process absent; basolateral processes absent; apex, in lateral view, rounded, in dorsal view, notched, notch shallow and triangular (Fig. 13A, B). Harpago short, rounded; peglike setae few, apical (Fig. 13A, C). Phallic endotheca with paired basolateral lobes, basolateral lobes tapered apically; phallotremal sclerites average size, longest dimension less than diameter of phallobase; dorsal sclerite ovoid, in dorsal view horseshoe­shaped (Fig. 13D, 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. 14C). Tergum IX without mesal ridge (Fig. 14B). Sternum IX anterior lobes darkly sclerotized and striate, posterior lobes smooth, with patch of lightly sclerotized cuticle lateral to vaginal opening (Fig. 14A). Tergum X appendage shorter than mesal lobe, base indistinct, apex oblique; mesal lobe lightly sclerotized; digitate lateral processes absent (Fig. 14B). Sternum X with patches of short fine setae posterolaterally to anal opening (Fig. 14A). Vaginal apparatus anterior and posterior sclerites equal in length; anterior sclerite truncate anteriorly, posterolateral projections absent; posterior sclerite triangular; posterior end of spermatheca a sclerotized sphere with wide anterior ridge (Fig. 14A).

Holotype male: PERU: Madre de Dios: Manu Biosphere Res., Pakitza Bio. Sta., 01­ 13­19­99, 11°56'00”S, 71°18'00"W, 350 m, 1.x.1987, Pogue (MHNJP).

Paratypes: PERU: Loreto: Iquitos, 15.v. 1 male (MCZ) ; Madre de Dios: Toma del Agua, Amazonia Lodge, 12°52'13”S, 71°22'34"W, 415 m, 29.vi.1993, Blahnik & Pescador — 1 female (NMNH) ; Manu Biosphere Res., Pakitza Bio. Sta., 11°56'00”S, 71°18'00"W, 350 m, 30.ix.1987, Pogue — 1 female (MHNJP) ; — 1 male (NMNH); 01­13­19­99, 11°56'00”S, 71°18'00"W, 350 m, 1.x.1987, Pogue — 1 female, 2 males (NMNH); trail 2, marker 18, 11°56'00”S, 71°18'00"W, 250 m, 12­23.ix.1989, Adams et al. — 1 female, 1 male (MHNJP); — 1 female, 2 males (NMNH); trail 2, marker 20, 11°56'00”S, 71°18'00"W, 250 m, 17­20.ix.1989, Adams 3 males (NMNH); — 1 female, 1 male (UMSP) .

Distribution. Peru.

Etymology. I am pleased to name this species for its collector, Nancy E. Adams, in recognition of her contributions to Neotropical caddisfly research and her assistance during my visits to the Smithsonian Institution.