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Photo#564477
Avalon Scrub Hairstreak? - Strymon

Avalon Scrub Hairstreak? - Strymon
Two Harbors, Catalina Island, Los Angeles County, California, USA
August 1, 2011
Fairly sure this is the Catalina endemic Strymon avalona, the Avalon Scrub Hairstreak. Just noticed it would be new to BugGuide but would like confirmation before going and creating the page. Compare to Bob Poole's plates at Discover Life.

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Two cents worth that may not help
It looks almost intermediate to me, but I've seen only photos of S. avalona. The black eye spot on the hind wing looks like S. melinus (it apparently usually isn't there on S. avalona; if it is there it is differently shaped - ?always). The arrangement of markings could easily fit with either species; the overall coloring looks more like S. melinus to me, but the relative spacing of the stripes is similar to S. avalona. Personally I would tentatively favor it being S. melinus, but I could well be wrong. In fact, perhaps it really is an intermediate (I don't know what happens when a Gray Hairstreak flies to Catalina Island and meets an Avalon Hairstreak?).

 
intermediate
I found a paper a while back that said that since S. melinus was introduced to the island a couple decades ago, the two species have readily hybridized so this very well could be an intermediate. I'll try to find the reference...

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Moved from ID Request.

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