Invertebrate Species completed

Hermes Copper Management Studies on Conserved Lands in San Diego County

January 1, 2014 - December 31, 2015
This study builds on the previous 2-year study on Hermes Copper. In 2012 the project shifted to resolving critical uncertainties about the species biology, while also evaluating population size trends at several large. The focus for 2014-2015 remained on resolving these uncertainties, primarily regarding immature stages.
Project Groups
Super Group: Rare Butterfly Management and Conservation Planning

SDMMP11 Hermes Copper Management and Monitoring

Project Focus
Project type: Monitoring
Target species: Hermes copper
Target vegetation: coastal sage scrub
Investigator: Douglas Deutschman
Main implementing entity: San Diego State University
Point of contact: Dan Marschalek
Study lead: Dan Marschalek
Project Protocol
Name: Hermes Copper Adult and Egg Surveys, Laboratory Rearing
Description: We monitored four sentinel sites during the 2013-2015 flight seasons with the goal of recording the maximum number of Hermes copper adults present on a single day at each site (maximum count). We monitored daily adult numbers (predominately males) at sentinel sites to obtain an indication of relative population size at discrete spiny redberry patches. Survey intensity was low during the start of the flight season (1-2 times per week), more frequent when adults were most abundant (2-3 times per week), and stopped surveying as soon as adult numbers declined. This strategy provided an efficient and cost-effective way to obtain annual maximum counts for each site. We regularly monitored previously located eggs without emergence holes to track development of the immature Hermes copper stages. Surveys started earlier in the season compared to past years because larvae had emerged prior to mid-April in 2012. Hermes copper eggs obtained from three captive females during the 2012 flight season
Sampling Techniques: visual encounters
Strategic Elements
Budget year: pre FY15-1
Project Location
County: San Diego
General: Central-central, South-central, South-west
MU: 10, 11, 2, 3, 4
Reports Available: Yes
Draft Report Date: 2015-08-31
Final Report Date: 2015-08-31
File name Lead Author Year Type
Rare Butterfly Management Studies on Conserved Lands in San Diego County: Hermes Copper (Lycaena hermes) San Diego State University 2015 report