Atopsyche (Atopsaura) spinosa (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 : 56-58

Atopsyche (Atopsaura) spinosa (Navás)

Fig. 3

This species is common in northwestern Argentina. It was first described by Navás (1930) in the genus Vertrarma from Palo Blanco, Buenos Aires. In 1952, this species was described as Atopsyche (Atopsaura) falina by Ross and King from Tucumán. In 1982, Flint discussed the type locality. Flint et al. (1999) synonymized both as Atopsyche (Atopsaura) spinosa (Navás) . Larvae, pupae and adults of this species were found in northwestern Argentina (Tucumán and Salta provinces) and for the first time in southern Bolivia.

Larva. Length 15–18 mm. Head ( Figs. 3 A, 3B) ocher, with light brown dorsal and ventral areas extending laterally in vertical band, bearing yellowish muscle scars in constant, apparently species specific pattern. Pronotum ( Fig. 3 C) ocher, with black anterolateral angles bearing short black bar, and small posterior spot; internal margin and center of pronotum with light brown area with pale and dark spots; posterior margin black. Prosternum ( Fig. 3 D) with mesal sclerite, with posterior and lateral margins black, lateral and posterior areas before the margin with light brown irregular scars; 2 smaller lateral sclerites with internal margins rounded, bearing curved posterior black process and small lateral process. Foreleg ( Fig. 3 E) with femur bearing curved apicoventral extension, anterior margin crenulated, bearing short spine and translucent curved process 2/3 times length of internal border of claw; apicoventral margin of tibia with 2 subterminal setae, 1 terminal short seta and 1 longer terminal seta; tarsus with long seta; claw with basal tooth; tibia, tarsus and claw reduced. Anal proleg ( Fig. 3 F) with lateral sclerite with apical margin rounded, basal angle black bearing upcurved black bar broadened in subtriangular spot at apex extending to apico-dorsal angle; dorsal area with some light brown spots with dark brown borders, inferior basal angle with upcurved process; dorsal plate rectangular bearing 2 long setae; anal claw with ventral curved hair and basal short seta.

Pupa. Length 7 mm. Mandibles ( Fig. 3 G) 4 times as long as the width of base, with large teeth basally and smaller medial and apical teeth. Dorsal hook plates ( Fig. 3 H) on abdominal segments II to VIII; segments IV and V with 2 pairs of dorsal hook plates, posterior ones oval and larger; segments II, III, VI, VII and VIII with anterior hook plates.

Material examined. ARGENTINA: Salta: Santa Victoria, Los Toldos, Río Los Naranjos, 22º25'47"S, 64º44'20"W, 1109 m, 13.xi.2004, Rueda Martín — 1 male; Baritú, Río Baritú, 22º29'58"S, 64º45'67"W, 1481 m, 15.xi.2004, Rueda Martín — male metamorphotype; Río Huaico Grande, 22º16'44"S, 64º42'39"W, 26.x.1999, Molineri — 1 larva; Río Huaico Grande, 22º16'44"S, 64º42'39"W, 1645 m, 11.xi.2004, Rueda Martín — 1 larva; Vaqueros, Río Chiricote, 02.iii.2000 — 1 larva; Río Grande de El Sauce, 15.ix.1998, Domínguez, Molineri & Ubero — 3 larvae; Tucumán: Lules, Potrero de las Tablas, Río Los Membrillos, 26º51'23"S, 65º25'53"W, 17.xi.2004, Molineri & Giordano — male reared; 25.VIII.2004, Rueda & Fernandez — male reared, male metamorphotype; 22.ix.2004, Rueda & Domínguez — 1 larva; Río Potrero, 26º26'51"S, 65º34'12"W, 30.x.1999 — 4 larvae; Río Tacanas, 36º17'11"S, 65º32'18"W, 29.x.1999 — 6 larvae; Chulca, Río Chulca, 29.x.1999 — 2 larvae; Jujuy: Río Yala, 26.vi.1997, Molineri — 1 larva; BOLIVIA: Tarija: O'connor Entre Río Basin, Río Salinas, 21º38'42,5"S, 64º4'8,2"W, 1160 m, 06.x.2004, C. Molineri y V. Manzo — 8 pupae, 4 larvae.

Figures

FIGURE 3. Atopsyche (Atopsaura) spinosa 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.