Flintiella harrisi, De Souza, Wagner Rafael M., Santos, Allan Paulo Moreira & Takiya, Daniela Maeda, 2016

De Souza, Wagner Rafael M., Santos, Allan Paulo Moreira & Takiya, Daniela Maeda, 2016, Three new species of Stactobiinae (Trichoptera: Hydroptilidae) with the first record of Orinocotrichia Harris, Flint & Holzenthal from Brazil, Zootaxa 4078 (1), pp. 337-343 : 341

Flintiella harrisi sp. nov.

( Figures 3A–E )

Material examined. Holotype male. BRAZIL: Piauí: Piracuruca, Parque Nacional de Sete Cidades; Riacho Piedade, Pennsylvania trap, 04°06’34”S, 41°4’39”W, 169 m a.s.l., 19.IV.2012, D.M. Takiya leg. ( CZMA).

Description. Holotype. Adult male. Length (from tip of the head to wing apex) 1.8 mm. General color pale yellow (in alcohol). Head without modification. Antennae simple; 18-articulated. Ocelli absent. Tibial spur formula 0-2-3. Fore- and hind wing venation reduced to basal veins. Mesoscutellum with transverse suture. Metascutellum rectangular, short and wide. Abdomen without visible modifications. Segment VII with a mesoventral process.

Male genitalia. Segment VIII annular. Segment IX broad with anterior margin concave, with small setae distally in dorsal view ( Fig. 3A ); sternum divided into 2 lobes ( Fig. 3B ); elongate apodemes originating from the anterolateral margin of segment, extending into segment VI ( Figs 3A–B ). Inferior appendages, in ventral and lateral views, elongate, subrectangular with short setae ( Figs 3B–C ). Subgenital plate conspicuous and elongate; in ventral view triangular, divided mesally into 2 arms obliquely truncate at apex, nearly as long as inferior appendages ( Fig. 3B ); in lateral view with digitiform apex ( Fig. 3C ). Tergum X short, partially fused to segment IX ( Fig. 3A ); in lateral view lobate ( Fig. 3C ). Phallus tubular; apex divided into 2 lateral, digitiform processes ( Fig. 3D ); in lateral view with the apical processes slightly dorsally turned ( Fig. 3E ); ejaculatory duct protruding from mesal incision ( Fig. 3D ).

Etymology. This species is named after Dr. Steven C. Harris who described many Trichoptera species, especially Neotropical microcaddisflies.

Remarks. Based on the subgenital plate divided into 2 arms nearly as long as inferior appendages, subrectangular inferior appendages, and presence of the mesoventral process on segment VII, this new species is similar to Flintiella carajas and F. heredia Harris, Flint and Holzenthal, 2002 . Flintiella harrisi sp. nov. can be recognized by the short and digitiform processes at the phallus apex, segment IX elongate dorsally with its anterior margin concave. The phallus with 2 apical processes is also present in F. andreae . However, F. pallida sp. nov. is easily separated from other Flintiella by the presence of the mesoventral process of segment VII and by the divided subgenital plate with arms obliquely truncate apically.

Figures

FIGURES 3 A – E. Male genitalia of Flintiella harrisi sp. nov.. A. dorsal; B. ventral; C. left lateral; D. phallus, dorsal; E. phallus, lateral. Scale bar = 0.1 mm.