Morphology Roesel's bush-cricket

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female



male


macropterous form

macropterous form


both male , female adults brachypterous. however, macropterous form, f. diluta (described charpentier 1825) exists. these have longer wings, , make less 1% of total population, in populations occur in higher numbers, in areas bush-cricket’s range has expanded to.


they more common in long, warm summers populations reach higher densities. has been suggested localised hostile environment may produce higher level of macropterous forms. macropterous form dispersal phase, , provides advantage of reaching new, more favourable habitats, within there lower density of roesel’s bush-crickets residing. established populations tend more highly brachypterous, high dispersal ability correlated lower fecundity in orthoptera.








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