Sierra Nevada Locals
Pay close attention to these groups of insects when fly fishing in the Sierra Nevada.
The Gospel on Caddisflies
If you fly fish for trout in the West, could Gary LaFontaine's Caddisflies be the most important bug book to read?
Caddisflies (Trichoptera) of the Sierra Nevada
The caddisflies are a large and diverse group of aquatic insects, and species are found in nearly all freshwater habitats. At present, 308 species are known in the state of California; 199 of these are present in the Sierra Nevada, and 37 are endemic to the Sierra (Morse 1993; N. A. Erman 1996). The largest family of caddisflies found in California is Limnephilidae with 63 species and the second largest is Rhyacophilidae with 59 species. These also happen to be the largest and second largest families found in the Sierra Nevada.
Emergence periods for these caddis often extend over a four to eight week period. The specific time of year depends on the species and water conditions (see hatch table below). In the West, with its diverse populations, a near continuous chain of hatches occurs from March through November. A few species have a bimodal emergence, or two hatches per season, with peaks in the spring and fall. Fishing success depends on timing and observation, not on being able to identify the specific species occurring in your streams. Observation is the biggest factor.
Glossoma Hatch Table
|Caddis Species||Winter Months||Spring Months||Summer Months||Fall Months|
|glossoma califica||April, May, June|
|glossoma alascense||April, May, June||July|
|glossoma traviatum||March||April, May, June||July|
|glossoma velona||February, March||April||August|
|glossoma penitum||January, February, March||April, May||July, August, September||October|
Imitations for Glossoma
|Pattern Name||Color||Hook Size||Thumbnail Image|
|BH Bird's Nest||Green Body||# 16|
|Hare's Ear Nymph||Tan, Brown Body||# 16|
|LaFontaine's Sparkle Pupa||Green Body||# 14|
|Sparkle Pupa||Green Body / Tan, Brown Shroud||# 16|
|Elk Hair Caddis||Tan Body||# 16|