No interactions present.
My book states that Lurida is duller than the nobilis and the male lacks the swollen back legs.
Oedemera lurida and Oedemera (Oedemera) lurida are the same species - the genus Oedemera was reorganised to also include the genus Oncomera. Effectively, to say Oedemera (Oedemera) lurida is to say 'I'm aware of the name changes associated with this group, and this is the species which is currently called Oedemera lurida, and was called Oedemera lurida before the taxonomic alterations as well'. As a different example, the species which caused the taxonomic kerfuffle is now called Oedemera (Oncomera) femoralis.
Personally I wouldn't necessarily agree that this is O. lurida: O. lurida and O. virescens, as far as I know, can only be seperated by checking the last abdominal sternites (females) or the aedeagus (males).
Record your ladybird sightings!
Thanks so much for the explanation, which is luminously clear.
Images from Gordano Valley Avon Wildlife Trust sites http://www.flickr.com/photos/gardenersassistant/collections/721576266896...
Images mainly from our garden http://www.flickr.com/photos/gardenersassistant/
Lat/Lng: 51.49085, -2.74476
OS grid ref: ST483771