Phylloicus adamsae, Prather, 2003

PRATHER, AYSHA L., 2003, Revision of the Neotropical caddisfly genus Phylloicus (Trichoptera: Calamoceratidae), Zootaxa 275 (1), pp. 1-214 : 19-21

publication ID 10.11646/zootaxa.275.1.1

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scientific name

Phylloicus adamsae

sp. nov.

Phylloicus adamsae , new species

Figs. 13 View FIGURE 13 , 14 View FIGURE 14

Phylloicus View in CoL "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 View FIGURE 13 ).

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 View FIGURE 13 ). Tergum IX without mesal ridge; posterior margin with round narrow mesal projection; thinly sclerotized mesally ( Fig. 13B View FIGURE 13 ); lateral ridge absent; dorsal pleural setae approximately 10, ventral pleural setae approximately 6 ( Fig. 13A View FIGURE 13 ). 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 View FIGURE 13 ). 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 View FIGURE 13 ). Harpago short, rounded; peglike setae few, apical ( Fig. 13A, C View FIGURE 13 ). 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 View FIGURE 13 ).

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 View FIGURE 14 ). Tergum IX without mesal ridge ( Fig. 14B View FIGURE 14 ). Sternum IX anterior lobes darkly sclerotized and striate, posterior lobes smooth, with patch of lightly sclerotized cuticle lateral to vaginal opening ( Fig. 14A View FIGURE 14 ). Tergum X appendage shorter than mesal lobe, base indistinct, apex oblique; mesal lobe lightly sclerotized; digitate lateral processes absent ( Fig. 14B View FIGURE 14 ). Sternum X with patches of short fine setae posterolaterally to anal opening ( Fig. 14A View FIGURE 14 ). 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 View FIGURE 14 ).

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). GoogleMaps

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,, Blahnik & Pescador — 1 female ( NMNH) GoogleMaps ; Manu Biosphere Res., Pakitza Bio. Sta. , 11°56'00”S, 71°18'00"W, 350 m, 30.ix.1987, Pogue — 1 female ( MHNJP) GoogleMaps ; — 1 male ( NMNH) GoogleMaps ; 01­13­19­99, 11°56'00”S, 71°18'00"W, 350 m, 1.x.1987, Pogue — 1 female, 2 males ( NMNH) GoogleMaps ; 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) GoogleMaps ; — 1 female, 2 males ( NMNH) GoogleMaps ; trail 2, marker 20, 11°56'00”S, 71°18'00"W, 250 m, 17­20.ix.1989, Adams 3 males ( NMNH) GoogleMaps ; — 1 female, 1 male ( UMSP) GoogleMaps .

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.


Museum of Comparative Zoology


Smithsonian Institution, National Museum of Natural History


University of Minnesota Insect Collection














Phylloicus adamsae



Flint, O. S., Jr. 1996: 425
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