Antennae thickened at tip, extreme tip whitish, bulge on costal margin of forewing: Rufous Grasshopper Gomphocerripus rufus (southern chalk grassland)

Antennae thickened at tip, ucolourous along length, no bulge on costal margin: Mottled Grasshopper Myrmeleotettix maculatus (widespread)

Forewings shorter than abdomen (only short-winged straight-keeled sp), keels of pronotum nearly straight: Meadow Grasshopper Chorthippus parallelus (widespread)

Forewings as long as abdomen, keels of pronotum gently curved, tips of hind femora blackish: long-winged form of Meadow Grasshopper Chorthippus parallelus

Side keels straight, hind femora unicolourous: Lesser Marsh Grasshopper Chorthippus albomarginatus (Jersey Grasshopper also fits this desription however it is found only on Jersey and the side keels on the pronotum do not have the feint white borders present on C albomarginatus)

Side keels bent sharply inwards at centre, flaring outwards towards hind border of pronotum, hind femora red underneath, hind tibia with black and yellow banding: Large Marsh Grasshopper Stethophyma grossuma (wetland usually acid bogs)

Side keels curved inwards, bulge on costal margin of forewing, wings extend beyond hind knees, black wedges do not reach hind margin of pronotum: Field Grasshopper Chorthippus brunneus (widespread and common)

Side keels curved inwards, bulge on costal margin of forewing, wings not longer than hind knees, black wedges meet hind margin of pronotum: Heath Grasshopper Chorthippus vagans (southern heaths)

Side keels sharply bent, no bulge on costal margin of forewing but with enlarged medial area and distinct white stigma, ovipositor with toothed valves: Stripe-winged Grasshopper Stenobothrus lineatus (southern England)

Side keels sharply bent, no costal bulge, feint stigma, ovipositor valves untoothed and long, green or olive brown, palps without white tips: Common Green Grasshopper Omocestus viridulus (widespread)

Side keels sharply bent, no costal bulge, feint stigma, ovipositor valves untoothed and short, dark brown with orange/red end to abdomen, palps with white tips: Woodland Grasshopper Omocestus rufipes (southern England in grass near woodland)