Austrotinodes belchioris Thomson & Holzenthal, 2010, new species

Austrotinodes belchioris, new species

Fig. 2

Diagnosis. This species is most similar to A. taquaralis, new species, and A. abrachium, new species. In A. belchioris, the intermediate appendage is bifid basally with a dorsal branch and a basoventral branch. In A. taquaralis, the basoventral branch is lacking; in A. abrachium the intermediate appendage is lacking. Additionally, in A. belchioris, the ventral and dorsal branches of the lateral process of the phallus are more equal in length than in A. taquaralis.

Description. Male. Forewing length 4.7–4.9 mm (n=5). Body sclerites brown, dorsum of head dark brown with pale yellow and light brown setae; thorax dark brown with pale yellow setae dorsally, light brown ventrally; leg segments with brown setae. Forewings covered with fine light brown and pale yellow setae in a mottled pattern. Genitalia. Segment IX deeply divided, sternum elongated; in lateral view, enlarging apically, ventral margin slightly convex; in ventral view, apical margin convex. Phallic guide sclerotized, not highly elevated; in lateral view, base broad, apex pointed, reaching tip of inferior appendage; in caudal view, with single indentation. Inferior appendages fused mesally, attached subapicomesally on sternum IX; in lateral view, narrowly ovate, apex acute; in ventral view, lateral lobes elongate, narrow, directed posterolaterally, posterior margin concave with central point. Tergum X divided into pair of semimembranous oval lobes, separated by shallow emargination, bearing dorsal setae. Preanal appendage long, surface setose, margin crenulated, parallel-sided, curving dorsally, apex narrowly rounded. Intermediate appendage long, approximately 3/4 length of preanal appendage; in lateral view, straight; bifid basally, with long, curved dorsal branch and curved basoventral branch; dorsal branch bearing 2 long subapical setae, basoventral branch with 1 long apical seta. Phallus with lightly sclerotized phallobase and membranous apical region; lateral process elongate, bifid, dorsal branch widest subapically, ventral branch narrow, branches subequal, dorsal branch with row of 2 subapical and 1 apical spines, ventral branch with 1 apical spine; without basomesal process.

Type material. Holotype: Male, Brazil: Minas Gerais: Parque Estadual do Itacolomi, Córrego Belchior, 20˚25.048’S, 43˚25.737’W, 24.i.1999, Amarante (UMSP 000047058) (MZUSP). Paratypes: same as holotype, 3 males, 4 females (UMSP); Brazil: Minas Gerais: Parque Estadual do Itacolomi, Rio Belchior, 20˚25.041’S, 43˚25.633’W, 725 m, 2.ii.1998, Holzenthal and Paprocki, 1 male (MZUSP).

Etymology. Named for Córrego Belchior, the stream where the holotype was collected.