Oecetis larvae and pupae

[Mark Melton]

These were all collected in the Russian River. The larvae prefer a moderate current with a gravel substrate while the pupae are found in a faster current on cobbles in aggregations. The larvae are about 7 mm for the case and 6 mm for the larvae while the pupae are 8mm for the case and 7mm for the pupae.

 

[Zak]

These were all collected in the Russian River. The larvae prefer a moderate current with a gravel substrate while the pupae are found in a faster current on cobbles in aggregations. The larvae are about 7 mm for the case and 6 mm for the larvae while the pupae are 8mm for the case and 7mm for the pupae.

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Whoah! Those coiled antennae must be 4-5 times the the length of the pupa!

 

[Mark Melton]

Whoah! Those coiled antennae must be 4-5 times the the length of the pupa!

Yeah, they're not called the long-horned caddisfly for nothing. On this species they're about 2-2.5 times as long as the body in adults.