Phylloicus guarani, Neto & Vilarino & Salles, 2023

Neto, Pedro Bonfá, Vilarino, Albane & Salles, Frederico F., 2023, Brevitentoria Weaver 1984 (Trichoptera: Integripalpia) of Espírito Santo State, Brazil: New records and new species, Zootaxa 5336 (3), pp. 301-327 : 309-310

publication ID 10.11646/zootaxa.5336.3.1

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Phylloicus guarani

sp. nov.

Phylloicus guarani sp. nov.

( Figs 4A–4C View FIGURE 4 , 5A–5F View FIGURE 5 )

Holotype male. Brazil, Espírito Santo, Santa Teresa, Reserva Biológica Augusto Ruschi, Bragacho stream (P13), 19°52’2.53”S 40°33’34.27”W, 830 m,–26.vii.2017, Malaise, CEUNES col. ( UFVB: TR00082 View Materials ). GoogleMaps

Paratypes. Same data as holotype, except 26.vii–23.viii.2017 (1♁, UFVB: TR00083 View Materials ); same, except 21.x– 18.xi.2017 (2♁♁, UFVB: TR00084 View Materials ) GoogleMaps .

Additional material examined. P13: 21– (1♁), 28.xii.2017 (1♁), 17.i–20.ii.2018 (1♁), 20.ii– 21.iii.2018 (1♁).

Diagnosis. The new species is very similar to Phylloicus sallesi Barcelos-Silva, Desidério & Pes 2017 , P. bidigitatus Prather 2003 , P. obliquus Navás 1931 , and P. plaumanni Flint 1983 . All these species have a median notch at the apex of segment X; the apical joint of the inferior appendage is elongate, triangular, and with three small robust bristles at the tip. Phylloicus guarani sp. nov. has the arms formed by the cavity of the apex of segment X round like those of P. bidigitatus and not pointed like those of P. sallesi , P. obliquus , and P. plaumanni . However, the basal part of segment X in dorsal view in the new species has a convex prominence, as in P. sallesi and P. obliquus . The inferior appendages of P. guarani sp. nov. are relatively smaller than those of P. sallesi , approximately half the length of segment X. The new species also can be differentiated by not having the small curvature or globose expansion of the apicoventral margin of the phallobase, present in P. sallesi .

Description. Adult male. Forewing length 9.0 mm (holotype). Body color overall light brown, wings dark brown (in alcohol) ( Fig. 4A View FIGURE 4 ). Head: Central setal area dark brown; anteromesal setal wart single, heart-shaped; anterior setal wart small, round; posterior setal wart narrow, elongate. Maxillary palp setose. Antenna long, scape wide ( Fig. 4B View FIGURE 4 ). Thorax: Pronotum narrow with small round mesal and lateral pronotal setal warts. Mesonotum wide, with mesoscutal setal wart diffuse, reaching mesoscutellum; mesoscutellum heart-shaped ( Fig. 4B View FIGURE 4 ). Legs light brown. Tibial spur formula 2-4-4. Forewing forks I–V present; hind wing forks II, III and V present ( Fig. 5A View FIGURE 5 ). Abdomen: Preterminalic abdominal terga I–VIII each without anteromesal notch. Corematic structures absent, terga III–VIII unmodified, without membranous lobes or sclerotized processes.

Male genitalia ( Figs 5B–5F View FIGURE 5 ): Tergum IX with dorsomesal suture subtle and short; posterior margin roof-like ( Fig. 5C View FIGURE 5 ); lateral suture present; dorsopleural setae present, ventropleural setae absent ( Fig. 5B View FIGURE 5 ); sternum IX with mesolateral suture ( Fig. 5D View FIGURE 5 ). Preanal appendage, in lateral view, not surpassing segment X, about as long as segment X, of uniform diameter throughout length, with setae long, but not filamentous or longer than appendage ( Fig. 5B View FIGURE 5 ). Tergum X without basal lobes; basodorsal and basolateral processes absent; in lateral view, subtriangular, apex narrow, round ( Fig. 5B View FIGURE 5 ); in dorsal view, wide at base, narrow near midlength, apex notched, notch elliptical, deep, extending through 1/3 of segment length, forming digitate posterior lobes; tergum covered with short setae dorsally ( Fig. 5C View FIGURE 5 ). Inferior appendage bi-articulated, short; coxopodite short, round apicodorsally, covered with long setae; harpago in ventral view almost as long as coxopodite, sharply tapered with few apical spine-like setae, in lateral view short, hooked dorsad ( Figs 5B, 5D View FIGURE 5 ). Phallus in lateral view slightly enlarged basally, curved caudoventrad; endotheca membranous, with paired apicolateral lobes, evident when everted; phallotremal sclerite hook-like in lateral view ( Fig. 5E View FIGURE 5 ), forceps-like in ventral view ( Fig. 5F View FIGURE 5 ).

Etymology. The specific epithet “guarani” is the name of the indigenous people who constitute one of the indigenous populations with the greatest territorial presence on the South American continent. In Espírito Santo State, the Guarani people live on the coast of the municipality of Aracruz. The name is used here as a noun in apposition with unvarying gender.

Distribution. Brazil (Espírito Santo).


Vicosa, Universidade Federal de Vicosa, Museum of Entomology

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