— Relatively small, delicate species. Dark green markings on segment 1 of the abdomen +/- triangular. Vulvar scale narrower, and not extending beyond tip of the abdomen (view from the side). 10 Thorax black with red (sometimes yellow) stripes. Abdomen banded black and red (sometimes abdomen mainly black). — Not as above 11 Abdomen mainly creamy white or pale green with variable longitudinal black markings on the hindmost segments. Tibiae of hind legs markedly flattened, wide, and mainly white, with black longitudinal stripe. (Rare in Essex.) — Not as above 12 Body black and blue patterned — Not as above 13 Abdomen mainly light blue. Longitudinal black markings on the hindmost segments Tibiae of hind legs markedly flattened, wide, and mainly white, with black longitudinal stripe. (Rare in Essex.) — Not as above 14 Abdomen with one or more clear blue segments (dorsal view) towards or at the hind end of the abdomen. 118