Isocapnia mogila, a rare winter stonefly, is found in good numbers in Humboldt County, California. In the 50 years since this species was described, very few specimens were recorded from only 4 sites in California and Oregon. Emergence seems to be higher in the fall and early winter than in the late winter and spring.
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1 December 2007
DISCOVERY OF A LARGE POPULATION OF THE RARE WINTER STONEFLY ISOCAPNIA MOGILA RICKER IN THE MAD RIVER, CALIFORNIA (PLECOPTERA, CAPNIIDAE)
Richard W. Baumann,
Jonathan J. Lee
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Western North American Naturalist
Vol. 67 • No. 4
December 2007
Vol. 67 • No. 4
December 2007
emergence
Isocapnia moglia
winter stonefly