Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1333199

Sylvan Hairstreak
Satyrium sylvinus

Observation date: July 11, 2022
Submitted by: Zencoyote
Specimen type: Photograph
Observation notes: These first appeared in Calavera Preserve around the end of June. On this day, more than 20 individuals were spotted perched in various chaparral species along the flat open sections of the Planet Walk Trail, which follows a transitional zone between the riparian community of Calavera Creek and the dryer terrain to the east. Willow and Mulefat, along with the more transient Yarrow are used as perches, as these likely males range between sitting still or buzzing / fighting with adjacent individuals. They are fast flyers, but tend to perch more than the Gray Hairstreaks that also appear here from time to time. Weather fair, with nearby coastal fog. 70's
Status: Resident
Verified by: Ken Davenport
Verified date: July 16, 2022
Coordinator notes: Yes, subspecies desertorum, the type locality which is Oak Creek in the Tehachapi Mountains in Kern County. Sesertorum ranges south to at least San Diego County-Ken Davenport
Checklist region(s): United States, California, San Diego County