Callophrys dumetorum
In 3 days ~10%
Callophrys dumetorum, the bramble hairstreak or lotus hairstreak, is a butterfly of the family Lycaenidae. It is found in the United States in coastal California and rarely in inland California. Subspecies C. d. oregonensis is known as the Oregon green hairstreak.
Callophrys dumetorum has a wingspan is 25–32 mm. The wings are light brown dorsally, and vivid green ventrally, with a broken white postmedial line. On the forewing, the green is typically limited to the leading 1/3rd of the wing.
These butterflies can be found in heathlands, road-cuts, coastal dunes, and open sites and clearings in Douglas-fir and ponderosa pine forests. The larvae have been recorded on broad-leafed lotus and Acmispon nevadensis Adults feed on nectar from these plants, as well as from desert parsley, dogbane, yerba santa, California buckeye, and woolly sunflower.
In 1998 Emmet et al. identified the lectotype for C. dumetorum as the Coastal Green Hairstreak (Callophrys viridis). This disagreement over the identity of the lectotype of C. dumetorum led to confusion between C. dumetorum, C. sheridanii, and C. viridis. The binomial name... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Channel Islands National Park | 🇺🇸 United States | |
| 2 | Joshua Tree National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San Diego | 🇺🇸 United States | |
| 2 | Los Angeles | 🇺🇸 United States | |
| 3 | San Francisco | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Lotus Hairstreak sighting in San Francisco on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 550th most-seen of the 737 insects we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Lotus Hairstreak in San Francisco on a given day, so our monthly data shows no clear season.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Lotus Hairstreak sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 3 cities where we can rate Lotus Hairstreak sightings, San Francisco ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in San Diego (United States, under 5%) and Los Angeles (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Lotus Hairstreak is recorded against all the insects logged in San Francisco (9 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
