Phylloicus bromeliarum Müller, 1880

PRATHER, AYSHA L., 2003, Revision of the Neotropical caddisfly genus Phylloicus (Trichoptera: Calamoceratidae), Zootaxa 275 (1), pp. 1-214 : 38-39

Phylloicus bromeliarum Müller

Figs. 32 , 33

Phylloicus bromeliarum Müller, 1880a:131 [Type locality: Brazil, Santa Catharina [sic]; no type nor type depository designated; case]. — Ulmer 1906:56 [female]; 1913:398 [male, distribution]; 1955:418 [larva].

Lectotype: BRAZIL, Santa Catarina, Blumenau, 26°56'0”S, 49°3'0"W, Müller , male ( MCZ; UMSP000067618 ).

A type series of one male and one female, labeled by Müller as Phylloicus bromeliarum , was deposited in the Museum of Comparative Zoology. These specimens are from Blumenau, Santa Catarina. The male retains only a hind wing; the female retains all four wings, and a pattern is clearly visible. This pattern was described by Ulmer (1906): two narrow white, transverse crescents on a dark brown wing. The other five specimens are a series of two males and one female from São Paulo state ψall in an excellent state of preservationψ which, although the male genitalia are identical with the type male, all have uniformly dark brown wings; a female from Misiones , Argentina, badly rubbed, so that if it had a pattern, it is no longer visible; and a female specimen labeled “ Brazil,” on which the wing pattern described by Ulmer is clear. Given the dearth of material, I cannot assess whether the patterned and unpatterned forms are different species; as the genitalia are indistinguishable, I am treating them all as P. bromeliarum .

The wing pattern of P. bromeliarum is similar to that of P. fenestratus ; however, in the latter, the white bands are longer and a long patch of white is present in cell Cu 2, which is lacking in P. bromeliarum . The male of P. bromeliarum is very different from other species of Phylloicus , as the dorsum of tergum X is very high, nearly even with the dorsum of tergum IX for most of its length ( Fig. 32A ). In addition, the harpago is very long and large, and is distinctive of this species.

Adult. Forewing length 7.4­8.9 mm, n = 7.

Head black, except for small setal warts. Maxillary palps black. Antenna twice forewing length; dark brown. Dorsal pterothorax black; ventrolateral thorax dark brown. Femora dark brown; tibiae dark brown; tarsi white, or ivory. Metathoracic leg of male and female with posterior fringe of long setae. Tibial spur formula 2,4,2. Forewing flat; dark brown; with two transverse bands; proximal band white, reaching posterior wing margin, at least 1/2 width of wing; distal band white, not reaching either wing margin, 1/2 width of wing or less. 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 similar to anterior sterna, sternum IX not elongate. Tergum IX with mesal ridge extending full length of segment; posterior margin slightly concave, sublaterally produced into small acute processes; very short mesally ( Fig. 32B ); lateral ridge absent; dorsal pleural setae approximately 10, ventral pleural setae absent ( Fig. 32A ); sternum IX with paired mesolateral ridges joined posteriorly; sternum IX ( Fig. 32C ). Preanal appendage less than 2/3 length of tergum X, widest near base, setae long, but not filamentous or longer than appendage ( Fig. 32A, B ). Tergum X without basal lobes; basodorsal process absent; basolateral processes absent; apex, in lateral view, truncate, in dorsal view, cleft; with short setae apicodorsally ( Fig. 32A, B ). Harpago large, rounded; peglike setae tiny, mesal ( Fig. 32A, C ). Phallotremal sclerites average size, longest dimension less than diameter of phallobase; dorsal sclerite ovoid, in dorsal view horseshoe­shaped ( Fig. 32D, 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. 33C ). Tergum IX without mesal ridge ( Fig. 33B ). Sternum IX anterior lobes darkly sclerotized and striate, posterior lobes smooth, without distinct area of thin cuticle or invagination ( Fig. 33A ). Tergum X appendage shorter than mesal lobe, base indistinct, apex oblique; mesal lobe lightly sclerotized; digitate lateral processes absent ( Fig. 33B ). Sternum X with patches of short fine setae posterolaterally to anal opening ( Fig. 33A ). Vaginal apparatus anterior sclerite elongate; anterior sclerite truncate anteriorly, posterolateral projections absent; posterior sclerite triangular ( Fig. 33A ).

Material examined. ARGENTINA: Misiones: 1.x.1910, Jørgensen — 1 female ( ZSZMH) ; BRAZIL: Saunders — 1 female ( BMNH) ; Santa Catarina: Blumenau , 26°56'00”S, 49°03'00"W, Müller — lectotype male, 1 female paralectotype ( MCZ) ; São Paulo: Bertioga , 23°51'00”S, 46°09'00"W, 5 m, 7­9.x.1996, Becker — 2 males, 1 female ( NMNH) .

Distribution. Argentina, Brazil.

Figures

FIGURE 32. Phylloicus bromeliarum. Male (lectotype): A—lateral view; B—dorsal view; C— sternum IX and inferior appendages, ventral view; D—phallus, lateral view.

FIGURE 33. Phylloicus bromeliarum. Female (UMSP000067619): A—sterna IX, X and vaginal apparatus, ventral view; B—terga IX and X, dorsal view; C—sternum VIII, ventral view.