Phylloicus aculeatus (Blanchard)

PRATHER, AYSHA L., 2003, Revision of the Neotropical caddisfly genus Phylloicus (Trichoptera: Calamoceratidae), Zootaxa 275 (1), pp. 1-214 : 17-19

Phylloicus aculeatus (Blanchard)

Figs. 11 , 12

Phylloicus aculeatus ( Blanchard, 1851:138) [Type locality: Chile; MNHNP; female; in Macronema ]. — Flint 1974a:84 [female lectotype, not Hydropsychidae , but Phylloicus ]; 1990:119 [distribution].

Phylloicus distans Navás, 1918:226 [Type locality: Chile, Marga­Marga, Los Perales; MZB; male]. — Flint 1974a:84 [to synonymy].

Phylloicus aculeatus is easily recognized. It is the only calamoceratid known from the Chilean subregion. The long, paired digitate processes of tergum X ( Fig. 11A, B ) are plainly visible even in uncleared specimens. The inferior appendages appear one­segmented, with the harpago large, not distinct from the coxopodite, and with numerous peglike setae on the mesoventral surface.

Adult. Forewing length 10.3­12.5 mm, n = 147.

Head dark brown. Maxillary palps dark brown. Antenna twice forewing length; chestnut brown. Dorsal pterothorax dark brown; ventrolateral thorax golden brown. Legs golden brown. Metathoracic leg of male with posterior fringe of long setae. Tibial spur formula — 2,4,4. Forewing flat; chestnut brown; without colored markings.

Male. Preterminalic abdominal terga without anteromesal notches. Corematic structures absent, terga III­V unmodified, without membranous lobes or sclerotized processes. Sternum VII without anteromesal process. Sternum VIII similar to anterior sterna, sternum IX not elongate. Tergum IX without mesal ridge; posterior margin with irregular mesal projection; dorsomesal lobe covered with fine ridged sculpturing ( Fig. 11B ); lateral ridge absent; dorsal pleural setae approximately 15, ventral pleural setae absent ( Fig. 11A ); sternum IX without mesolateral ridges; sternum IX ( Fig. 11C ). Preanal appendage less than 2/ 3 length of tergum X, widest near base, setae long, but not filamentous or longer than appendage ( Fig. 11A, B ). Tergum X without basal lobes; basodorsal process absent; basolateral processes long, length at least twice diameter; apex, in lateral view, with ventral projection, in dorsal view, notched, notch deep and triangular; with small setose mesal lobe at mid­length; with longitudinal row of short setae sublaterally; lateral margins extending over bases of paired, truncate apical processes ( Fig. 11A, B ). Harpago large, nearly equal to coxopodite and with base indistinct from coxopodite; peglike setae many, mesoventral ( Fig. 11A, C ). Phallic endotheca with paired apicolateral lobes and paired basolateral lobes, basolateral lobes large and round, apicolateral lobes large and rounded; phallotremal sclerites average size, longest dimension less than diameter of phallobase; dorsal sclerite ovoid, in dorsal view horseshoe­shaped ( Fig. 11D, E ).

Female. Preterminal abdominal terga without anteromesal notches. Sternum VII without anteromesal process. Tergum VIII without posterolateral brush; sternum VIII cleft posteromesally to anterior ridge; sternum VIII ( Fig. 12C ). Tergum IX without mesal ridge ( Fig. 12B ). Sternum IX anterior and posterior lobes darkly sclerotized and striate, without distinct area of thin cuticle or invagination ( Fig. 12A ). Tergum X appendage shorter than mesal lobe, base marked by faint suture line, apex rounded; mesal lobe lightly sclerotized; digitate lateral processes long, at least twice diameter, or absent ( Fig. 12B ). Sternum X without setae in membrane ( Fig. 12A ). Vaginal apparatus anterior and posterior sclerites equal in length; anterior sclerite truncate anteriorly, posterolateral projections rounded; posterior sclerite ovoid; posterior end of spermatheca membranous ( Fig. 12A ).

Material examined. ARGENTINA: Neuquen: 13 km E Quila Quina, 27.i.1974, Flint — 2 males ( NMNH) ; 3 km S Va. La Angostura , 4.ii.1974, Flint — 1 male ( NMNH) ; 3 km W Estación Forestal Pucara , 30.i.1974, Flint — 1 male, 1 female ( NMNH); — 1 male ( UMSP) ; Estación Forestal Pucara, Canal , 28­29.i.1974, Flint — 1 male, 1 female ( NMNH); — 1 male ( UMSP) ; Río Negro: El Bolson , 27.ii.1961, Kovacs — 1 male, 1 female ( NMNH) ; CHILE: 16.xi.1933, Stuardo — 1 female ( DEI) ; Calbuco, Faz — 1 male ( DEI) ; 1843, Gay — P. aculeatus lectotype female ( MNHNP) ; Comudes , 17.i.1902, Schönemann — 5 males, 3 adults ( ZMHU) ; 28.i.1902, Schönemann — 1 adult ( ZMHU) ; 16.ii.1902, Schönemann — 1 male ( ZMHU) ; Manguehue , 28.xii.1932, Stuardo — 1 male ( DEI) ; Aisén: Puerto Puyuguapi , 44°21'03”S, 72°34'27"W, 5.ii.1940, Schwabe — 1 male ( DEI) ; Araucania: near Los Gringos Camp , 1300 m, 29.i.­5.ii.1979, D & M Davis; Akerbergs — 2 males, 2 females ( NMNH) ; 6­11.i.1982, Davis — 2 males, 2 females ( NMNH) ; 5­9.i.1989, Peña G. — 1 male ( NMNH) ; Bío­Bío: Caledonia, E Mulchén , 700­900 m, 6­ 15.ii.1981, Peña G. — 1 male ( NMNH) ; Contulmo ( El Peral ), 15.i.1967 — 1 female ( NMNH) ; Contulmo , 1.viii.1904, Schönemann — 1 adult ( ZMHU) ; Ralco / Trafa­Trafa , 400 m, 19­22.xi.1994, Peña G. — 1 female ( NMNH) ; Río Duqueco, Río Duqueco, Hacienda San Lorenzo , E Los Angeles, 1000 m, 20­23.i.1991, Peña G. — 2 males ( NMNH) ; Arauco, Butamalal , 23­31.i.1954, Peña G. — 1 female ( DEI) ; Caramavida , 25­31.xii.1953, Peña G. — 2 males ( DEI) ; Ñuble Province, Alto Tregualemu , ca. 20 km SE Chovellen, 500 m, 26­27.i.1979, D & M Davis; Akerbergs — 2 females ( UMSP) ; Ñuble, Recinto , 36°48'00”S, 71°44'00"W — 2 males, 1 female ( BMNH) ; 30.xi.1951, Peña G. — 1 male ( CNC) ; Cauquenes: Tregualemu , 35°56'00”S, 72°43'00"W, 11­12.xii.1993, C & O Flint — 1 female ( UMSP) ; De los Lagos: brook in Fdo. Walper , 16.ii.1958, Illies — 3 males ( NMNH) ; Pte. La Caldera , 42°40'00”S, 74°00'00"W, 26.xii.1993, C & O Flint — 2 males ( NMNH) ; Rincon de Piedra , ca. 23 km SE Valdivia, 200 m, 23.ii.1979, D & M Davis; Akerbergs — 2 males, 1 female ( NMNH) ; Chiloé , 13­15.i.1981, Marin — 13 males, 1 female ( NMNH); — 1 female ( UMSP) ; 1 km E Lago Tepuhueco ca. 40 air km SW Castro , 100 m, 23­25.xii.1981, Davis — 1 male ( NMNH) ; Ahoni Alto , 42°47'00”S, 72°35'00"W, 24.xii.1993, C & O Flint — 2 males ( NMNH) ; Ahoni , 30 km SE Chonchi, xi.1988, Peña G. — 4 females ( NMNH) ; i.­ii.1989, Peña G. — 2 males, 1 female ( UMSP) ; Aucar , 6.i.1952, Peña G. — 5 males ( CNC) ; Puntra , ca. 30 air km S. Ancud, 50 m, 21­22.xii.1981, Davis — 1 male ( NMNH) ; Terao , W end, 42°42'00”S, 73°40'00"W, 23­27.xii.1993, C & O Flint — 1 male ( NMNH) ; Llanquihue, Casa Pangue , 4­10.xii.1926, Edwards, F & M — 2 males ( BMNH) ; Peulla , 41°06'00”S, 72°02'00"W, 12­13.xii.1926, Edwards, F & M — 1 male ( BMNH) ; Osorno, brook at L. Puyhue , 17.xii.1957, Illies — 1 male ( NMNH) ; Maicolpué , 40°34'00”S, 73°44'00"W, 21.xii.1993, C & O Flint — 2 males ( NMNH) ; Pucatrihue , 26­ 31.i.1980, Peña G. — 1 male ( UMSP); — 7 adults ( NMNH) ; 1­12.ii.1980, Peña G. — 5 males, 5 females ( NMNH) ; 12­26.ii.1985, Peña G. — 2 adults ( NMNH) ; P. N. Puyehue, Ag. Calientes to 3 km W Osorno, 600 m, 12­20.xii.1981, Davis — 1 male ( NMNH) ; Valdivia, Enco , 26.ii.1955, Peña G. — 1 male ( DEI) ; Pellaifa , mtn. brook, 12.ii.1958, Illies — 1 male ( NMNH) ; Del Maule: Forel Carrizalillo , 250 m, 30.i.­5.ii.1981, Peña G. — 1 male ( NMNH) ; Las Tablas , E Curico, ii.1985, Peña G. — 4 adults ( NMNH) ; Curico, Coigual , 13.i.1955, Peña G. — 1 male ( DEI) ; Linares, Emb. Bullileo , 36°18'00”S, 71°25'00"W, 11­12.i.1994, C & O Flint — 1 male ( NMNH) ; Región Metropolitana: Santiago, El Manzano , 9.ii.1952, Peña G. — 1 female ( CNC) ; Santiago: San Juan de Pirque , 33°38'00”S, 70°30'00"W, 11.xi.1927 — 1 male, 1 female ( MZB) ; Valdivia: Las Trancas, W La Union , 23­29.i.1995, Peña G. — 1 male ( NMNH) ; Valparaiso: Cuesta El Melon , 14­ 16.xi.1985, Peña G. — 5 males, 5 females ( NMNH) ; Quillota, Los Perales, Estero Marga­ Marga , 33°01'14”S, 71°33'41"W,. iii.1925 — 2 males ( MZB) ; i.1927 — 1 male ( MZB) ; ii.1927 — 1 male ( MZB) ; VIII Región del Bío­Bío: small trib. to Río Queuco , 5 km E Ralco, 37°51'36”S, 71°36'14"W, 500 m, 16.i.2000, Holzenthal & Muñoz — 2 males ( UMSP) .

Distribution. Argentina, Chile.

Figures

FIGURE 11. Phylloicus aculeatus. Male (UMSP000010175): A—lateral view; B—dorsal view; C—ventral view; D—phallus, lateral view; E—phallus, ventral view.

FIGURE 12. Phylloicus aculeatus. Female (UMSP000041398): A—sterna IX, X and vaginal apparatus, ventral view; B—terga IX and X, dorsal view; C—sternum VIII, ventral view.