Mystery beetle in La Perla: An unexpected erotylid in Ecuador

Iphiclus bimaculatus is a pleasing fungus beetle (Erotylidae: Saccomorphus) first described in 1775 by Danish entomologist Johann Christian Fabricius. Native to South America—and historically recorded primarily in Brazil—these beetles and their larvae feed on wood-decaying polypores and shelf fungi, playing a quiet yet vital role in forest decomposition. I encountered this handsome individual while exploring the protected forest of “La Perla” in the Santo Domingo province of Ecuador. I initially misidentified it as a handsome fungus beetle (Endomychidae), but iNaturalist community members suggested Iphiclus bimaculatus. If the identification holds, it would mark the first observation outside its known Brazilian range—unless, of course, it’s a remarkably convincing lookalike species! Unfortunately, it took off before I could snap more than a single, slightly soft photo. I hope to cross paths with this elusive beetle again!

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