Country: England Pets: Ants, 1 Canary, 7 Finches, 2 dogs and 1 wife Favourite Ant: Formica rufa & Camponotus habereri I Like: Daleks, History and good movies. I Hate: Very spicy food and hot curry. I Am: A Senior Citizen Joined: April, 2008 Likes: 4,550
Not sure which lycaenid species the caterpillar (maybe Myrmecophile can tell us), but the ant is the abundant SW US and NW Mexican, arid-land species Dorymyrmex bicolor, of the Dolichoderinae. The ones in the picture are particularly brightly colored. Often, especially in cooler areas, such as at somewhat higher altitudes or along the coast of California, the red parts appear as a much dingier reddish brown.