[Leps-l] What is the Evidence that Spring and Summer Azures are separate species

[Roger Kuhlman]

I would like to know if there is good evidence that Spring Azure (Celastrina ladon) and Summer Azure (Celastrina neglecta) are separate species or only just seasonal variants of the same species. Sure they look different but they appear in exactly the same habitats at least that is true in southeast Michigan. I think they may also use the same larval host-plants here although I can not substantiate that claim. 

Roger Kuhlman
Ann Arbor, Michigan
 		 	   		  
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