(Medium Brown Stone)
Copyright © 2009 Tim Loh
Copyright © 2007 Brady Richards
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WA Stonefly Description |
| Taxonomic Name (Common Name) | Nymph | Adult |
| Perlodidae (Patterned Stone) | Tails equal in length or longer than abdomen; no branching gills behind base of legs; metathoracic wingpads strongly diverging from body. |
| Skwala (Medium Brown Stone) | nymph Copyright © 2009 Tim Loh | adult Copyright © 2007 Brady Richards |
| Nymphs and adults have long submental gills, but other gills are absent; clusters of fine hairs on the back of the head and along the top of the thorax, but not in a dense row. | Male 10th tergum is cleft and the epiproct and lateral stylets are well developed; males often short winged, hide under rocks and streamside debris. | |
| Skwala americana | ||
| Skwala curvata |
State of Washington distribution is based on: Valid Stonefly Names for North America.
Created: 08/16/2013 Last modified: 12/08/2014 www.FlyfishingEntomology.com