Atopsyche (Atopsaura) callosa (Navás), Navas

Rueda, Paola A. & Martin, 2006, Associations, new records, and a new species of Atopsyche from northwestern Argentina and southern Bolivia (Trichoptera: Hydrobiosidae), Zootaxa 1367, pp. 51-62 : 58-60

Atopsyche (Atopsaura) callosa (Navás)

Fig. 4

This species is one of the most widespread in the genus. It was described by Navás (1924) in the genus Vertrarma and later described as A. (A.) alcornura by Ross (1953) and as A. schmidi by Denning (1965). In 1975, Flint synonymized both. It is recorded from Costa Rica, Colombia, Ecuador, Panama, Peru, Venezuela, Argentina, and now for the first time, from southern Bolivia.

Larva. Length 10–12 mm. Head ( Figs. 4 A, 4B) light yellow, with black dorsal and ventral areas extending laterally in vertical band, bearing light yellow muscle scars in constant, apparently species specific pattern. Pronotum ( Fig. 4 C) ocher with anterolateral angles black, bearing short black bar, center of pronotum with brown spots, posterior margin black. Prosternum ( Fig. 4 D) with mesal sclerite with black posterior and lateral margin; 2 smaller anterolateral sclerites with internal border rounded bearing long black posterior process. Foreleg ( Fig. 4 E) with femur bearing apicoventral concave extension, anterior border crenulate, bearing short spine and upcurved process 1/2 times length of internal margin of claw; tibia with apicoventral lobe bearing short seta and long seta, the second as long as ventral margin of claw; tarsus bearing ventro-apical seta; claw with basal tooth; tibia, tarsus and claw reduced. Anal proleg ( Fig. 4 F) lateral sclerite in lateral view, 2.5 times as long as wide, apical border rounded, basodorsal angle black with upcurved black bar extending to dorso-apical angle; basal margin with black spot; apicoventral angle with upcurved process and ventral tooth; dorsal plate oblong bearing 2 long setae; claw with ventral sinuous hair bearing short spine in the basis.

Pupa. Length 8 mm. Mandibles ( Fig. 4 G) 3 times as long as the width of base; with small apical teeth and larger medial and basal teeth; dorsal hook plates ( Fig. 4 H) on abdominal segments II to VII; segments IV and V with 2 pairs of dorsal hook plates; segments II, III, VI and VII with anterior hook plates.

Material examined. ARGENTINA: Salta: Santa Victoria, Los Toldos, Río Los Naranjos, 22°25’47’’S, 64°44’20’’W, 1109 m, 18C, 13.xi.2004, Rueda Martín — 7 male adults; Baritú, Río Baritú, 22°29’58’’S, 64°45’67’’W, 1481 m, T 18,5C, 15.xi.2004, Rueda Martín — 3 larvae; Tucumán: Lules, Potrero de las Tablas, Río Los Membrillos, 26°51’23’’S, 65°25’53’’W, 17.ix.2004, Molineri & Giordano — 1 male metamorphotype; BOLIVIA: Tarija: O’connor: Entre Río Basin, Río Salinas, 21°38’42,5’’S, 64°4’8,2’’W, 1160 m, 06.x.2004, C. Molineri and V. Manzo — 1 male pupa, 1 female pupa, 5 larvae.

Figures

FIGURE 4. Atopsyche (Atopsaura) callosa larva and pupa: A — head, lateral view; B — head, dorsal, view; C — pronotum, dorsal view; D — prosternum, ventral view; E — anterior leg, lateral view; F — anal proleg, lateral view; G — pupal mandibles, dorsal view; H — hook plates, dorsal view.