Ecclisomyia bilera

Kings Creek Ecclysomyian Caddisfly

Family: Limnephilidae · Class: Insecta · Order: Trichoptera

Conservation status: G2 S2

The Kings Creek ecclysomyian caddisfly is an aquatic insect in the family Limnephilidae, subfamily Dicosmoecinae. As with other caddisflies, adults are small, moth-like insects with tent-shaped wings when at rest. The larval stage is aquatic and constructs protective cases from organic and mineral materials found in their stream environment. Specific morphological details for this species have not been well documented in available literature. This species has an extremely limited range, known only from Kings Creek and its immediate watershed. The exact geographic boundaries of its distribution remain poorly defined due to limited sampling and research. Based on the Global/State Rank of G2 S2, indicating it is imperiled globally and within California, the species likely occupies a very restricted area within a single drainage system. Kings Creek ecclysomyian caddisfly larvae inhabit flowing freshwater environments, typical of other Limnephilidae family members. Stream-dwelling caddisfly larvae generally require clean, well-oxygenated water with appropriate substrate for case construction. The specific habitat requirements, including water temperature preferences, flow velocity tolerance, elevation range, and substrate composition preferences for E. bilera, have not been documented in scientific literature. Like other caddisflies, this species undergoes complete metamorphosis with egg, larval, pupal, and adult stages. Larvae are typically detritivores or omnivores, feeding on organic matter, algae, and small invertebrates within the stream ecosystem. Adults are generally short-lived and focused on reproduction, with mating often occurring near water sources. The specific life cycle timing, reproductive behavior, feeding ecology, and seasonal activity patterns for this species remain undocumented. The Kings Creek ecclysomyian caddisfly appears on the U.S. Fish and Wildlife Service's species tracking system but currently lacks federal protection under the Endangered Species Act. The G2 S2 ranking indicates the species faces a high risk of extinction due to restricted range, declining populations, or other factors. Primary threats to stream-dwelling caddisflies typically include water quality degradation, habitat modification, climate change effects on streamflow, and watershed development. However, specific threats to E. bilera and current population trends have not been assessed or documented. The limited scientific knowledge about this species reflects a broader challenge in invertebrate conservation, where many endemic insects lack basic biological and ecological data. Given its apparent restriction to a single watershed and imperiled conservation status, E. This species is included on the California Department of Fish and Wildlife's Special Animals List. bilera likely represents a relict population adapted to specific local conditions. Further research is needed to understand its distribution, life history, ecological requirements, and conservation needs. Current management likely focuses on watershed protection and water quality maintenance within the Kings Creek system.

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, and more.