Helicopsyche (Feropsyche) lazzariae, Holzenthal, Ralph W., Blahnik, Roger J. & Calor, Adolfo R., 2016

Holzenthal, Ralph W., Blahnik, Roger J. & Calor, Adolfo R., 2016, Three new species of Helicopsyche von Siebold (Trichoptera: Helicopsychidae) from Brazil, Zootaxa 4078 (1), pp. 344-353 : 348-351

Helicopsyche (Feropsyche) lazzariae sp. nov.

( Figures 3 A–F)

Material examined. Holotype male. BRAZIL: Paraná: Voçoroca, along main road to Joinville, 25°50.332’S, 49°03.332’W, el. 650 m, 14.iii.1996, Holzenthal and Lázzari leg., UMSP 000040750 (alcohol) ( MZSP).

Diagnosis. Helicopsyche lazzariae sp. nov. is unlike any other species in the subgenus Feropsyche in having an inferior appendage that is broadly deltoid in shape and lacking a distinct basomesal process. Also the posterodorsal margin of the inferior appendage is weakly concave with sparse marginal setae. The shape and setation of tergum X is also distinctive, as described below.

Description. Male. Overall color (in alcohol) nearly uniformly brown. Tibial spur formula 2, 4, 4. Forewing: length 4.0 mm (n = 1); denuded. Sternum VI process long, narrow, longer than segment VI, tubular along its length, oriented posteroventrally, with microtrichiae along length, apex tapering, with lamellae apicoventrally ( Fig. 3 E), slightly sinuate in lateral view, straight in ventral view ( Fig. 3 F). Genitalia. Segment IX short, rounded ventrally; anteromesal margin well developed; lateral apodeme developed, narrow, located midlaterally on segment ( Fig. 3 A). Segment X dorsoventrally flattened, widest in middle, ventral margin undulate; in dorsal view shallowly divided apically into 2 rounded lobes; laterally bearing 2 setose areas, more basal area with 7 long setae, apical area with 4 shorter setae ( Fig. 3 B). Superior appendage originates dorsolaterally, setose, oval ( Fig. 3 A), digitate, in dorsal view ( Fig. 3 B). Inferior appendage large, deltoid, with anterior margin slightly concave, posterior margin convex, and posterodorsal margin weakly concave, with sparse marginal setae; dorsal corner prominent, bearing long setae ( Fig. 3 A); wide basally, with long basoventral setae; mesal surface with 4 narrow, spine-like setae at middle length on slight protuberance ( Figs 3 A, C); basomesal lobe of inferior appendage absent ( Fig. 3 A); basal plate of inferior appendage straight in lateral view ( Fig. 3 A), narrow along its length, tapering apically ( Fig. 3 B). Phallus tubular, strongly down-curved along its length; phallobase narrow, slightly inflated basodorsally, narrowest in the middle, rounded apically, apex semi–membranous; endotheca a large, short, membranous lobe extending dorsally over endophallus; endophallic membranes not inflated; phallotremal sclerite not apparent ( Fig. 3 D).

Etymology. Named in honor of Dr. Sonia Lazzari (Universidade Federal do Paraná), one of the collectors of the specimen, friend, and colleague of the authors.

Distribution. Brazil (Paraná).

Figures

FIGURE 3. Helicopsyche (Feropsyche) lazzariae sp. nov., male. A. genitalia, lateral view; B. segments IX and X, dorsal view; C. inferior appendage, ventral view; D. phallus, lateral view; E. sternum VI, lateral view; F. sternum VI, ventral process, ventral view.