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Results of Browder Ridge 4th of July Butterfly Count

July 19, 2008
Compiler: Eric Wold, NABA Eugene-Springfield
36 Species Total

 
Group 1:
Roads 15 and 2650 (Wolf Rock, Frissell Ridge)
Group 2:
Iron Mountain Rd. and Trail
Common Name Group 1*
Subtotal
Group 2**
Subtotal
Species
Total
Clodius Parnassian 80 8 88
Anise Swallowtail 1 0 1
Pale Swallowtail 9 1 10
Western White 0 2 2
Orange Sulphur 1 0 1
Blue Copper 0 1 1
Lilac-bordered Copper 2 1 3
Mariposa Copper 2 1 3
Sylvan Hairstreak 1 0 1
Sheridan's Hairstreak 0 1 1
Bramble Hairstreak 2 0 2
Brown Elfin 0 1 1
Nelson's Juniper Hairstreak 15 0 15
Western Tailed-blue 0 1 1
Dotted Blue 4 10 14
Silvery Blue 1 1 2
Boisduval's Blue 10 39 49
Acmon Blue 1 3 4
Great Spangled Fritillary 2 0 2
Hydaspe Fritillary 2 1 3
Pacific Fritillary 31 9 40
Northern Checkerspot 1 0 1
Hoffman's Checkerspot 4 1 5
Field Crescent 2 0 2
Variable 'Chalcedon' Checkerspot 70 63 133
Edith's Checkerspot 1 12 13
Satyr Comma 0 1 1
California Tortoiseshell 1 0 1
Painted Lady 0 2 2
Lorquin's Admiral 11 2 13
California Sister 1 0 1
Great Arctic 8 3 11
Silver-spotted Skipper 3 0 3
Persius Duskywing 2 0 2
Two-banded Checkered- Skipper 2 0 2
Common Branded Skipper 2 1 3
SUB-TOTAL INDIVIDUALS 272 165 437
NUMBER OF SPECIES 29 23 36
Blue sp. 8 13 21
Euphydryas sp. 0 2 2
TOTAL INDIVIDUALS 280 180 460
       
Hemileuca moth 6 3 9
Ranchman's Tiger Moth 0 1 1

General Notes: Very large snowfall during winter (> 200% of mean snowfall) led to snow late on the ground this year. The day was 100% sunny and temperature was between 70-85 degrees F.

* This group did the driving/walking route that includes Forest Service Road 15 (starting near Blue River Reservoir) past Mann Creek and Wolf Meadows, then Road 2650 (Frissell Ridge) and 1506 on the HJ Andrews Experimentral Forest. Members of Group 1: Eric Wold (leader), Bruce Newhouse, Ellie Ryan, Ingrid Ford, Bonnie Richman, Michelle Saxton, Earl Dill, Yvonne Parkinson, and Donald Gudehus. Road 2650 was closed at 3.5 miles from "Spaghetti Juntion" at the base of Wolf Rock due to logs crossing the road. Therefore, we were not able to count butterflies along Frissell Ridge this year, which is the traditional "hotspot" for this route. We departed on Road 2654 (Deer Creek Road).

** This group hiked to the peak of Iron Mountain, plus some additional areas (see below). Members of Group 2: Bruce Newhouse (leader), Jim Mitchell, Cathy Irwin, Bonnie Rindo, Lois Hagen, David Hagen, Teresa Roark, Jo von Hippel Thea Evanstad, and Katie Lynch. Phenology about 2-4 weeks behind normal. Group made one quick stop at Fish Lake (almost nothing flying yet), and then at the bottom of Road 35 for Johnson's Hairstreak (none seen). Group proceeded to Iron Mtn. mid Trailhead, and climbed peak. Much time spent separating Variable/Edith's checkerspot, and checking Boisduval's Blues for other blue species.



Page design: Donald Gudehus and Neil Björklund.

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