Sighting for March 12, 2021

David H. Bartholomew

San Bruno Mountain, State and County Park
San Mateo County, CA

With David Rawlinson, John Hibbard, Sarab Seth, and Tom Peterson. Reasonably nice weather but a bit breezy. Just a few butterflies seen, unfortunately no San Bruno Elfins, our hoped-for species.

22 Checkerspot caterpillars seen, probably all chalcedona. Also, 2 hilltopping Blues not stopping for ID.

  • Anise Swallowtail 3
  • Spring Azure 4
  • California Tortoiseshell 3
  • West Coast Lady 3
  • Red Admiral 1
  • Common Buckeye 1

Variable Checkerspot caterpillar

West Coast Lady

Red Admiral

Anise Swallowtail