Apopyllus silvestrii (Simon, 1905) (Figs 3, 6a)

Material examined. PARAGUAY: Itapúa: Alto Verá: Kanguery, 26°30’43.5”S 55°47’34.0”W, 1 ♂, 12–16.I.2017, Y. Piñanez coll. (IBNP-Invert.-JAK-CR 2945) .

Additional material examined. ARGENTINA:El Bolson: Rio Negro, 1♂, 1♀, 20–27.V.1962, A. Kovács coll.(AMNH); BOLIVIA: San Antonio de Parapeti: Rio Parapeti, 1♂, 1–5.IX.1964, B. Malkin coll. (AMNH) ; Songo- tal, 3800m, 1♀, 30. II.1953, Forster & Schindler coll. (AMNH); PERU: San Mateo, 3000m, 1♀, 7.I.1939, W. Weyrauch coll. (AMNH); Punol: ( Lago Titicaca), 3900m, 1♀, XI.1947, W. Weyrauch coll. (AMNH) .

Distribution. This species is known from southern South America, with the northernmost record from southeastern Peru.

Remarks. This species is diagnosed by the general shape of the RTA (Fig. 3c, f). The specimen was captured in the same collecting conditions as A. Kanguery.