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I know that laevatrispina often has three pairs of spots but I don't know about the other Sapromyzosoma species that Carles-Tolrá described from Spain. In the description of laevatrispina he mentioned only two pairs of spots for that species (wrongly interpreted as one pair by Shatalkin in his 2000 key where it consequently ended up in the wrong part of the key). In my experience it is three pairs of spots more often than two pairs.