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The two UK Xanthodelphax species are distinctive for being entirely yellow-orange (often bright yellow), and are separated by microscopic examination; the differences are quite striking, however, and live specimens can be identified in the field with a 20x lens.
X. straminea has very small parameres, and the gonoplacs are concavo-convex. Both macropters and brachypters occur.
Widespread and locally common in a variety of grasslands.
Adult: June to September
Length 2.5-3.5 mm (macropters ~4 mm)
male: Cornwall (August 2010) ©Joe
female: Cornwall (August
Cornwall (August 2010) ©Joe