SURVEY
California Butterflies

Anthony Chabot Regional Park, Alameda County, CA, USA

Date 6/7/2026, 9:39:00 PM
Duration 102 minutes
Surveyors 1
Coordinates

37.7611309, -122.1124317

Protocol

California Butterflies

Targets (15 / 253)

  • Unknown Lycaenid (family Lycaenidae)
    2
  • Unknown Nymphalid (family Nymphalidae)
    3
  • Unknown Butterfly (superfamily Papilionoidea)
    1
  • Rural Skipper (Ochlodes agricola)
    6
  • Common Ringlet (Coenonympha california)
    1
  • Western Tiger Swallowtail (Papilio rutulus)
    1
  • Acmon Blue (Icaricia acmon)
    5
  • Umber Skipper (Lon melane)
    4
  • Gray Buckeye (Junonia grisea)
    135
  • Orange Sulphur (Colias eurytheme)
    1
  • Mylitta Crescent (Phyciodes mylitta)
    1
  • Gray Hairstreak (Strymon melinus)
    1
  • Painted Lady (Vanessa cardui)
    2
  • Mournful Duskywing (Erynnis tristis)
    2
  • Pale Swallowtail (Papilio eurymedon)
    2

Incidentals (2)

  • Whites, Yellows, and Sulphurs (family Pieridae)
    1
  • Duskywings (Erynnis)
    2