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Xanthodelphax straminea
Family: Delphacidae

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)
Xanthodelphax straminea
Adult male: Cornwall (August 2010) ©Joe Botting

Xanthodelphax straminea
Xanthodelphax straminea
Adult female: Cornwall (August 2010) ©Joe Botting

Nymph: Cornwall (August 2010) ©Joe Botting