Sighting for March 12, 2020
David H. Bartholomew
San Bruno Mountain, Ridge Trail
San Mateo County, CA
- Pipevine Swallowtail 4
- Anise Swallowtail 24
- Bramble Hairstreak 3
- Brown Elfin 2
- Moss' Elfin 8
- Gray Hairstreak 2
- Spring Azure 7
- Edith's Checkerspot 12
- California Tortoiseshell 4
- Painted Lady 6
- West Coast Lady 1
Spring Azure
Moss' Elfin
Edith's Checkerspot
Edith's Checkerspot
Edith's Checkerspot
Anise Swallowtail
With John Hibbard and Lisa Hug. Temperature mid-60s at best, butterflies not flying until about 11:00AM. San Bruno Elfin and Bay Checkerspot are federally-endangered, we had the good fortune to see several of both. Not listed were two unidentified blues (fly-bys), and two Coastal Green Hairstreaks (beautiful bluegreen underside).