Gustavo Pérez, Angastaco, Province of Salta

Official source account — 2020 annual report, printed page 47: Gustavo Pérez discovered an elongated object when reviewing a landscape photograph taken near Angastaco on Route 40. Its enlarged image showed a central body with two lateral projections resembling transparent wing roots. CIAE considered a flying insect crossing the lens view the best-supported explanation. It classified the case Type B, while acknowledging the impossibility of recreating the fleeting photographic passage. The summaries distinguish reported observations from the agency’s proposed explanations. Source Type A/B ratings describe explanatory confidence and are not encounter classes.