Smicridea

Smicridea is a genus of Neotropical caddisflies belonging to the family Hydropsychidae. These caddisflies are found primarily in Central and South America, with a significant presence in Andean streams and rivers.

The larvae of Smicridea are typically lotic (flowing water) organisms, constructing fixed retreats of fine silk, often attached to rocks or other submerged substrates in rapid currents. They are filter feeders, utilizing specialized setae (hairs) on their legs to capture small organic particles and algae from the water column. The larvae play a crucial role in the food web of these aquatic ecosystems.

Adult Smicridea are small to medium-sized caddisflies with characteristic tent-like wings held over the abdomen when at rest. They are generally nocturnal and often attracted to light. Distinguishing Smicridea species can be challenging, requiring careful examination of the male genitalia.

The taxonomy of Smicridea is complex, with numerous species and ongoing revisions. Research continues to further clarify species boundaries and understand the ecological roles of these caddisflies within their respective habitats. Their sensitivity to water quality makes them potentially useful bioindicators for stream health assessment in Neotropical regions.