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Sciocoris is a very difficult genus and three similar species are now found in Britain. The genus is characterised by the strongly transverse (wider than long) pronotum, laterally expanded connexivum and very rounded head.
S. sideritidis is a smaller species and best identified by the following features in combination: markedly pale pronotal margins, a dark central stripe on the underside of the abdomen and a rather elongate and straight sided headshape. It is extremely similar to other European species, in particular S. maculatus and all potential records must be supported by a voucher specimen.
Adults overwinter and are probably polyphagous. S. sideritidis is native to the Mediterranean and is known only from a single site in south Essex, where a population was discovered close to a container port in 2018, the likely point of introduction.
Similar species: S. cursitans, S. homalonotus
Adult: All year
Length 4.5 - 6.0 mm
|Adult: Essex (September 2018) ©Yvonne Couch
|Adult: Corfu (May 2014) ©Tristan Bantock
||Adult: Essex (July 2020) ©Yvonne Couch
|Adult underside: Essex (July 2020) ©Yvonne Couch
||Nymph: Essex (September 2018) ©Yvonne Couch