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Title: "Musical chairs": the Swedish species of Scymnus subg. Neopullus (Coleoptera, Coccinellidae) change places.
Personal Authors: Wanntorp, H. E.
Author Affiliation: Wirséns väg 19, SE 18650 Vallentuna, Sweden.
Editors: No editors
Document Title: Entomologisk Tidskrift


Four species of Scymnus subgen. Neopullus has been reported from Sweden: S. ater, S. haemorrhoidalis, S. limbatus and S. silesiacus. A revision of the material in Swedish collections gave the following surprising results. Scymnus ater, which has been reported from most Swedish provinces has no Swedish record. The specimens that have been identified as S. ater since the early 19th century are individuals of a black form of S. limbatus. The bicoloured form of S. limbatus is extremely rare in Sweden. Instead all bicoloured specimens, earlier identified as S. limbatus, unexpectedly turned out to represent a colour-form of the rare S. silesiacus. This species has been described as evenly reddish-brown, but a bicoloured form, outwardly very similar to S. limbatus, is also common in the localities. This form was originally described from present day Croatia as a subspecies of S. silesiacus. It has hitherto been unknown in Central and Northern Europe, but occurs together with the reddish-brown morph also in southeastern Europe. S. silesiacus occurs on young shoots that appear on the stems of old sun-exposed oaks after mal-treatment. In Sweden, it is mainly restricted to areas which are well-known for their rich fauna of insects depending on old oaks. Maybe the scarcity of reports of S. silesiacus from Central Europe may, like in Sweden, be partly due to misidentification of the bicoloured form as S. limbatus.

Publisher: Sveriges Entomologiska Forening

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