Dioctria's picture

Weevil

Observed: 25th March 2010 By: DioctriaDioctria’s reputation in InvertebratesDioctria’s reputation in InvertebratesDioctria’s reputation in InvertebratesDioctria’s reputation in InvertebratesDioctria’s reputation in Invertebrates
20100325 S5 16064a Sitona
20100325 S5 16056a Sitona
Description:

Sunning itself on a plastic garden chair, a popular basking spot with flying insects.

Identifications
Species interactions

No interactions present.

Comments

Martin Harvey's picture

Sitona

The most recent key to Sitona is in the Royal Entomological Society's handbook series. It is by Mike Morris and published in 1997. Royal Ent Soc keys are now available from the Field Studies Council:
http://www.field-studies-council.org/publications/pubsinfo.aspx?Code=7018

There are 20 British species of Sitona and I must admit I find them a tricky genus to deal with. However, the vast majority of the ones I encounter in my garden seem to be Sitona lineatus, and yours could well be this. Unfortunately, S. lineatus comes out right at the end of the key!

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Entomologist and biological recorder

dshubble's picture

Sitona

As Martin says, Morris (1997) is the best and most recent key - Sitona can indeed be fiddly and really needs a specimen - I had a go at keying it out as surface features are primarily used but ground to a halt about two-thirds of the way through,

Dave

Dioctria's picture

Sitona

Thanks for the information Martin, and for having a go at keying it Dave. You've convinced me that I should be satisfied with Sitona sp!

David