Austrotinodes boliviensis, Thomson, Robin E. & Holzenthal, Ralph W., 2010

Thomson, Robin E. & Holzenthal, Ralph W., 2010, New Neotropical species of the genus Austrotinodes Schmid (Trichoptera: Ecnomidae), Zootaxa 2437, pp. 38-50 : 42-45

Austrotinodes boliviensis , new species

Fig. 3

Diagnosis. This species is most similar to A. panamensis Flint , A. sedmani Flint , and A. texensis Bowles , but differs in the shape of the intermediate appendage. In A. boliviensis , the intermediate appendage is long and tubular with a medial quadrate projection at midlength that is absent in both A. panamensis and A. sedmani and more rounded in A. texensis . Additionally, the apical margin of the intermediate appendage of A. boliviensis is deeply emarginated, while the margin of A. panamensis and A. texensis is more shallowly emarginated. A shallow emargination may or may not be present in A. sedmani , due to some variation.

Description. Male. Forewing length 3.9–4.6 mm (n=8). Body sclerites brown, dorsum of head dark brown with pale yellow and dark brown setae; thorax light brown with pale yellow setae dorsally, light brown ventrally; leg segments with brown setae. Forewings covered with fine pale yellow setae with small scattered patches of light brown setae. Genitalia. Segment IX deeply divided, sternum elongated; in lateral view, enlarging apically, ventral margin slightly curved apically; in ventral view, apical margin convex. Phallic guide sclerotized, not highly elevated; in lateral view, base narrow, apex rounded, reaching middle of inferior appendage; in caudal view, with single indentation. Inferior appendages fused mesally, attached apicomesally on sternum IX; in lateral view, ovate, apex subacute; in ventral view, lateral lobes subtriangular, directed posterolaterally, posterior margin broadly concave. Tergum X divided into pair of semimembranous oval lobes, lobes bulbous, bearing row of setae dorsally. Preanal appendage long, surface setose, margin crenulated, widest basally, narrowing apically, apex narrowly rounded. Intermediate appendage long, approximately the length of preanal appendage; in lateral view, gently curved; bifid apically, with medial quadrate projection at midlength; longer lateral branch bearing 1 long apical seta, shorter mesal branch bearing 2 long subapical setae. Phallus with sclerotized phallobase and membranous apical region; lateral process short, with 3 narrow projections, each ca. 1/2 length of the following projection, each projection with 1 apical spine; without basomesal process.

Type material. Holotype: Male, Bolivia: Dept. La Paz: AMNI Madidi, Comun. San Miguel de Bala, Arroyo Bacuatra Grande, 14˚30.737’S, 67˚31.385’W, 280 m, 17–19.vii.2003, Robertson, Blahnik, and Apaza ( UMSP 000113033) ( UASC). Paratypes: Bolivia: Dept. La Paz: San Buenaventura-Ixiamas Rd. km 23, Hacienda Chiquitos, Arroyo Chiquitos, 14˚20.082’S, 67˚42.204’W, 283 m, 13–14.vii.2003, Robertson and Blahnik, 7 males, 4 females ( UMSP, NMNH).

Etymology. Named for the country of Bolivia, where the specimens were collected.

Figures

FIGURE 3. Male genitalia of Austrotinodes boliviensis, new species: A, left lateral. B, dorsal. C, ventral. D, phallus, left lateral. E, phallus, dorsal. F, inferior appendage and phallic guide, caudal.