Chorthippus parallelus (Zetterstedt, 1821) [Invalid]

Typical behaviour in this species is as follows: when a male begins to sing the normal song, females within range, who are in the responsive state, orientate to the source of sound and move towards it. Generally, while pausing during movement to re-orientate, they make the female "response stridulation movements" with their hind legs. These movements produce no sound since females of this species are brachyp- terous; in the descriptions of behaviour which follow the term "response movements", when applied to a female, will refer to these motions of the hind femora, which appear to be identical with those of the hind femora of a male singing the normal song. When responsive females come within sight of a male, they move directly towards him and stand nearby, making response movements as a reaction to the normal song of the male. When the attention of the male is attracted to the female, he at once goes up to her, gives a short burst of courtship song and leaps on her back, copulation ensuing. It is probably more correct to regard this latter song of the male as a "shout of triumph" (Haskell, 1957). [1]

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