Cernotina sinuosa, Barcelos, Patrik, Camargos, Lucas Marques De, Pes, Ana Maria & Salles, Frederico Falcão, 2013

Barcelos, Patrik, Camargos, Lucas Marques De, Pes, Ana Maria & Salles, Frederico Falcão, 2013, Six new species of Cernotina Ross, 1938 (Trichoptera: Polycentropodidae) from Brazil, Zootaxa 3669 (2), pp. 115-128 : 124-127

Cernotina sinuosa sp. nov. Barcelos-Silva, Camargos & Pes

( Figs. 7 A–D)

Cernotina sp. 2, Barcelos-Silva et al. 2012, pp. 1279.

Etymology. The adjective sinuosa refers to the curvature in the median portion of the inferior branch of the dorsolateral lobe of each preanal appendage, where sinuosa (Latin) = full of bendings, windings.

Diagnosis. Cernotina sinuosa sp. nov. seems to be similar to Cernotina abbreviata Flint 1971 , C. perpendicularis , C. cingulata Flint 1971 and C. unguiculata Flint 1971 . All these species have spines on the apical margins of tergum X. The new species can be distinguished from these other species by the cylindrical ventral branch of the dorsolateral lobe of each preanal appendage, which has a long and thick spine apically, whereas the other four species have simple preanal appendages that are flat and truncate or subtriangular. Besides that, the spine of tergum X is subapical in the new species, but apical in the other species.

Description. Male. Length of each forewing 2.9 mm (n = 3). General color, in alcohol, yellowish brown; antennae pale yellow, tibia and tarsus of each foreleg with short, dark brown setae, mid- and hind legs with golden setae.

Male genitalia: Sternum IX long, subrectangular, anterior margin narrowly and deeply incised and posterior margin narrowly and less deeply incised ( Fig. 7 C). Tergum X semi-membranous, in dorsal view with two lobes: a dorsomesal lobe cleft mesally in posterior margin and covered by long setae and a longer ventrolateral lobe covered by short setae, bilobed apically; an apical branch rounded and a subapical branch cylindrical with sclerotized apex, covered by fine setae and bearing thick spine ( Fig. 7 B). Preanal appendages in lateral view with dorsolateral lobe bifurcate basally; dorsal branch very short, triangular and ventral branch long, slightly sclerotized, cylindrical, bent downward at midlength at almost right angle, with basal half tapering slightly and apical half with same width, sclerotized apex covered by fine setae and bearing thick spine, ventromesal lobe triangular with row of enlarged setae on inferior margin ( Fig. 7 A). Inferior appendages, in lateral view, widening posteriorly, covered by setae, each rounded apically with short apicoventral projection; basodorsal lobe subquadrate in ventral view, with posterior margin sclerotized, mesal portion with three stout setae ( Fig. 7 C); apicomesal lobe absent ( Fig. 7 C). Phallus tubular, base broader than apex, with two internal spines sickle-like (phallus not expanded) ( Fig. 7 D).

Female: Unknown.

Holotype male: BRAZIL: Espírito Santo; Fundão, Hotel Fazenda Lua Nova; 19°56'02.0''S, 40°24'45.0''W; 02.xii.2010; E.A. Raimundi, F.F. Salles, F.C. Massariol, P. Barcelos-Silva, and Y.S. Feitosa; Pennsylvania [alcohol]; (CZNC).

Paratypes: Same data as holotype, 1 male (INPA); same data as holotype, 1 male (MZSP).

Biology. The specimens were collected in a narrow headwater with dense vegetation cover within a small fragment of Atlantic Forest. The stream has a stony bottom with a lot of deposited leaves.

Figures

FIGURE 7. Cernotina sinuosa sp. nov. A) Male genitalia, left lateral; B) terga IX and X, and preanal appendages, dorsal; C) sternum IX and inferior appendages, ventral; D) phallus, left lateral.