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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. homalonotus is the largest of the three species and the eyes are pedunculate. The combined length of the ocular penduncle and eyes is approximately equal to the peduncle thickness, and the distal angle of the corium is pointed (below right). The species is extremely similar to S. macrocephalus and S. microphthalmus, both of which could arrive in Britain. All records of S. homolonotus must be supported by a voucher specimen, as these characters (as well as size) are very difficult to assess from photos.
Adults overwinter and all life stages feed on grasses. A very recent arrival in Britain; the only two records are from Kent (2016) and Surrey (2020). Both were of single adults found in warm, south-facing chalk grassland.
Similar species: S. cursitans, S. sideritidis
Adult: All year
Length 6.0 - 8.5 mm
|Adult: Kent (May 2016) ©Tristan
|Adult: Surrey (September 2020) ©Graeme Lyons
||Adult: Kent (May 2016) ©Tristan