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Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana
Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

Lateral view of a Clostoeca disjuncta (Limnephilidae) (Northern Caddisfly) Caddisfly Larva from the Yakima River in Washington
This one was surprisingly straightforward to identify. The lack of a sclerite at the base of the lateral hump narrows the field quite a bit, and the other options followed fairly obvious characteristics to Clostoeca, which only has one species, Clostoeca disjuncta.
27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
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Caddisfly Species Culoptila cantha (Saddle-case Makers)

Where & when

In 39 records from GBIF, adults of this species have mostly been collected during June (33%), August (23%), July (18%), May (13%), and April (10%).

In 4 records from GBIF, this species has been collected at elevations of 801, 1575, 3762, and 4117 ft.

Species Range

Physical description

Most physical descriptions on Troutnut are direct or slightly edited quotes from the original scientific sources describing or updating the species, although there may be errors in copying them to this website. Such descriptions aren't always definitive, because species often turn out to be more variable than the original describers observed. In some cases, only a single specimen was described! However, they are useful starting points.

Source: Revision of the genus Culoptila (Trichoptera: Glossosomatidae)

Adult. Length of forewing: male 2.4 – 3 mm; female 2.5 – 3.2 mm. Color brown; wing chord evident, but scarcely paler in coloration. Mesothorax of male not noticeably modified; mesoscutal wart short, heart-­shaped; mesoscutal setae short. Mesothoracic tegulae of male flattened, only slightly enlarged; tegular setae short; tegular gland present, very small, minimally developed. Male genitalia. Sternum VI process very short, rounded. Tergum IX ventral margin subtruncately rounded, slightly produced posteroventrally. Inferior appendages not evident, apparently absent, but phallotremal sclerite complex forming a distinctive, sclerotized ventral plate with minute spines on its dorsal surface. Tergum X very short, length much less than width, apex in ventral view truncate to subtruncate; ventrolateral processes with apices incurved and posteriorly bent, bend very prominent, approximately right angle, mesal margin of apex bluntly rounded, not acute. Phallobase relatively short, widening from base, dorsal and ventral margins more or less straight in lateral view, apicodorsal projection moderately elongate, with slight upward inflection at base, apex subacute. Phallic apparatus with 1 phallic spine, nearly length of phallobase, straight, often slightly recurved at base, stout at base, strongly tapered apically.

Start a Discussion of Culoptila cantha

Caddisfly Species Culoptila cantha (Saddle-case Makers)

Species Range
Common Name
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