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I have seen Merz, but IMHO, Collin's key seems OK'ish for fasciata. The troublesome parts in Collin is if one keys to rivosa? Mert is probadly correct with the Synonym of rivosa/fasciata. but is seems reasonably clear to me the Collin was looking at two species, so what was the species that Collin thought was rivosa?

Some say female of fasciata group can't be identified, but the female genitalia seem reasonably clear in Merz (and Collin's fasciata)



PS Mers download in on this site!