Zapada frigida
(Claassen, 1923)
Frigid Forestfly
Zapada frigida is a of in the , commonly known as the Frigid Forestfly. Like other members of the Zapada, retain diagnostic branched cervical from the nymphal stage, with two sets of branched gills on each side of the body. The species has been documented from western North America including Alberta, Alaska, British Columbia, California, and Colorado.
Pronunciation
How to pronounce Zapada frigida: /zɑːˈpɑːdə ˈfrɪdʒɪdə/
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Identification
can be distinguished from other by the presence of two sets of branched cervical on each side of the body, a trait retained from the nymphal stage and diagnostic for the Zapada. Specific identification to level likely requires examination of genitalic characters.
Images
Habitat
cling to submerged rocks and other heavy objects in flowing waters. are often found on bridges or logs that stretch across streams and creeks.
Distribution
Alberta; Alaska; British Columbia; California; Colorado
Behavior
are quite active, running rapidly and flying when startled.
Similar Taxa
- Zapada cinctipesAlso a common in the Zapada; shares the diagnostic branched cervical and similar preferences, but differs in specific distribution and potentially genitalic characters
- Other Nemouridae generaLack the two sets of branched cervical on each side that characterize Zapada; have simpler gill structures or different gill arrangements