Polyplectropus auriplicatus, Vilarino, Albane & Calor, Adolfo R., 2015

Vilarino, Albane & Calor, Adolfo R., 2015, New species of Polycentropodidae (Trichoptera: Annulipalpia) from Northeast Region, Brazil, Zootaxa 4007 (1), pp. 113-120 : 119

Polyplectropus auriplicatus new species

Fig. 3 A–F

Diagnosis. This species resembles Polyplectropus brasilensis Chamorro & Holzenthal 2010 . The new species can be differentiated by the shorter and deltoid intermediate appendage (whereas it is longer than the inferior appendage and cylindrical in P. br a s i l e ns i s), the preanal appendage with dorsolateral process nearly straight and positioned mesally (strongly curved in caudal view and less mesal in P. br a s i l e ns i s), ventromesal processes slightly separated throughout their full length, (fused basomesally in P. brasilensis ), and inferior appendage with mesoventral branch more developed and rounded apically (almost continuous with dorsolateral branch and truncate in P. brasilensis ).

Description. Male. Length of forewing 4.8–4.9 mm, n=3. Color (in alcohol) of head, thorax, and legs light brown; wings overall pale.

Genitalia. Sternum IX in lateral view deltoid, anterior margin sinuate, posterior margin medially produced and slightly concave ventrally; in ventral view subrectangular, anterior margin convex and entire, posterior margin with median flange and pair of deep submedial concavities. Terga IX+X membranous, oblong, bearing dorsal microsetae. Intermediate appendage not longer than inferior appendage, reniform in lateral aspect, with pair of long apicolateral setae; in dorsal view deltoid, folded; in caudal view digitate, with rounded lobe projected posteroventrad. Preanal appendage tripartite, with dorsolateral, mesolateral, and mesoventral processes; dorsolateral process elongate, originating from dorsum of mesolateral process, initially directed anterodorsad, then recurved posteromesad, tapering mesally into acute apex, straight to slightly sinuate in caudal view; mesolateral process setose, in dorsal view deltoid, in lateral view quadrate; mesoventral process setose, in lateral view hooklike, directed ventrad, ventral margin concave, posterior margin sinuate; in caudal view, mesoventral processes broadly meeting medially, but not fused, slightly separated; ventral margin of process subacute, with ventral apex bearing many stout, peg-like setae. Inferior appendage bipartite, with dorsolateral branch and mesoventral branch, with anterior basal plate extending anterad about half length of sternum IX; dorsolateral branch setose, in lateral view oblong, apically rounded; in ventral view broad, lateral margin convex, undulate, apex rounded, broadly fused to mesoventral branch with shallow concavity on posterior margin between them; mesoventral branch setose, elongate and broad, bearing robust spines apically; in lateral view deltoid, projecting posterad, rounded apically; in ventral view deltoid, apical margin slightly angled, gradually converging mesally. Phallus long; dorsal phallic sclerite elongate in lateral view, apically round in dorsal view; apicolateral projection of phallobase tapered apically in dorsal view; endothecal membrane without embedded spines.

Holotype male (alcohol) ( MZUSP). BRAZIL: Bahia: Santa Teresinha, Pedra Branca, Córrego das torres, 12º51’00.3’’S, 39º28’46.8’’W, el. 754 m, 23.x.2012, UV light pan trap, Gomes, V., Vilarino, A., Campos, R.

Paratypes: BRAZIL: Bahia: Same as holotype, except 04.ii.2010, Calor, A.R., Dias, E.S., 1 male (alcohol) ( UMSP); Elísio Medrado, Reserva Jequitibá, GAMBA, Córrego Caranguejo, 12º52’127’’S, 39º28’324’’W, el. 510 m, 25.x.2012, UV light pan trap, Vilarino A., 1 male (alcohol) ( UFBA).

Etymology. From the Latin feminine noun auris, ear, small lobe, and adjective plicatus, -a, -um, folded, in reference to the shape of the intermediate appendages.

Remarks. Belonging to the Polyplectropus bredini Species Group as defined by Chamorro & Holzenthal (2010), the new species is very close to P. brasilensis .

Figures

FIGURE 3. Polycentropus auriplicatus n. sp. Male genitalia: A, left lateral; B, dorsal; C, phallus, dorsal; D, phallus, left lateral; E, caudal; F, ventral (Abbreviations: inf. app. = inferior appendage; int. app. = intermediate appendage; p. pr. app. = process of preanal appendage).