Mount Diablo Butterfly List 2016

Rural Skipper | Kevin Hintsa

Pale Swallowtail on thistle

| Mike Woodring

Painted Lady on stock

| Mike Woodring

Western Tiger Swallowtail

| Kevin Hintsa

Bramble Hairstreak

@ Pine Canyon, 5-23-10

| Michael Marchiano

Orange Sulphur | Kevin Hintsa

Great Purple Hairstreak | Kevin Hintsa

Over 70 species of butterflies are known to live on Mount Diablo, which is almost 50 percent of all known species in the San Francisco Bay Area. When looking for butterflies, choose a sunny day with a temperature above 65 degrees Fahrenheit, generally between 10 a.m. and 3 p.m. Very few butterflies fly when it is cool, foggy, or rainy. Binoculars that can focus 10 feet or closer are very useful.

Check MDIA's Event Calendar, for guided butterfly walks, which usually occur in spring and early summer.

In keeping with the California State Parks mission statement, butterflies and their habitat are protected, and collecting of butterflies is strictly prohibited in Mount Diablo State Park.

Mount Diablo Butterfly List PDF has been generously compiled by Mount Diablo butterfly experts and enthusiasts. It is updated as information becomes available. MDIA welcomes input on sightings or other information that you may wish to contribute. Please contact MDIA at

Edith's Checkerspot | Kevin Hintsa

Variable Checkerspot on Yarrow, Pine Canyon

Lorquin's Admiral

Monarch | Kevin Hintsa

@ Pine Canyon, 5-23-10

| Michael Marchiano

Mustard White | Kevin Hintsa

March 2015 | Michael Marchiano

© 2020 by Mount Diablo Interpretive Association