Ochrotrichia constricta, De Souza, Wagner Rafael M., Santos, Allan Paulo Moreira & Takiya, Daniela M., 2014

De Souza, Wagner Rafael M., Santos, Allan Paulo Moreira & Takiya, Daniela M., 2014, First records of Ochrotrichia Mosely, 1934 (Trichoptera: Hydroptilidae) in Northeastern Brazil: Five new species and two new geographical records, Zootaxa 3852 (2), pp. 273-282 : 278

Ochrotrichia constricta sp. nov.

Fig 4A–C

Description. Holotype. Adult male. Structure typical for Ochrotrichia spp. ( Flint 1972) except body length 1.8 mm (from tip of head to end of the folded wings). Length of each forewing 1.6 mm. General color uniform brown (in alcohol). Head without modification. Tibial spur formula: 1-3-4. Metascutellum subpentagonal. Abdomen without visible modifications.

Male genitalia. Sternum IX with anterior margin rounded ( Fig. 4A, 4C ); tergum IX very short and trapezoidal ( Fig. 4B ), with posterior margin slightly convex. Inferior appendages long; rectangular with apex truncate in lateral view ( Fig. 4C ); with long setae over all surface and spine-like setae on internal surface ( Fig. 4A ). Segment X tergum with basal portion oval, constricted mesally; basal portion with a sclerotized spine-like process on right side; apical portion of the tergum X hooked in dorsal view and directed ventrally in lateral view ( Fig. 4 B-C). Phallus tubular and elongate; without processes; ejaculatory duct not protruding ( Fig. 4 D).

Female and larva unknown.

Remarks. Ochrotrichia constricta sp. nov. is not placed in any species group, because it does not share the diagnostic features of any group. This new species is most similar to O. silva Bueno-Soria & Holzenthal, 1998 on the basis of the shape of the spine-like process on the right side of tergum X and its mesal constriction. However, O. constricta sp. nov. can be distinguished from this and other Ochrotrichia species by the absence of a second process at the basal area of tergum X and almost uniformly rectangular shape of the inferior appendages.

Etymology. This species is named in reference of the remarkable mesal constriction on tergum X.

Holotype. 1 male, BRAZIL: Bahia: Igrapiúna , Reserva Ecológica Michelin, Mata da Vila 5, 13°49'22.9''S, 39°12'6.5''W, 87 m, 2–4.iv.2012, D.M. Takiya, R. Ale-Rocha, R.A. Carvalho, and M.L Monné cols., Malaise trap ( DZRJ).

Paratypes. Same data as holotype, 4 males ( DZRJ).

Figures

FIGURES 4 A – C. Ochrotrichia constricta sp. nov. Male genitalia: A, ventral; B, dorsal; C, left lateral; D, phallus, dosal. Scale: 0.1 mm.