3. Migratory locust: Locusta migratoria (nymph)

​Nymph description 3 of 15

Grpahic: photo of migratory locust nymphs showing two different colour forms.

Distribution

Graphic: Distribution map - found mainly in northern Australia but can invade southern areas during an outbreak. A frequent pest in Central Highlands of Queensland.

Nymph Description: Locusta has different phases with the solitary phase the most commonly encountered:
Solitary phase: Colour from brown to green. In profile the thorax is slightly domed above the head and crested. A dark stripe starts at the antenna, goes up through the eye at a 45 degree angle and becomes horizontal before fading into the thorax, which has a small but prominent dark spot. Rear femur has two oblique darker bands.
Gregarious phase: Colour is red to orange with very contrasting darker to almost black markings. In profile the thorax is not domed but saddle-shaped and even lower than the head. A dark stripe starts at the antennae, goes up through the eye at a 45 degree angle and becomes horizontal as it continues across the thorax. In later instars this becomes a prominent stripe along the entire body.

Confusion with Australian plague locust: This is a large species with later instars bigger than plague locust adults.

Confusion with yellow winged locust: Similar size and domed appearance (compare photos).

Unique features: The combination of large size, only slightly domed thorax, an eye stripe which becomes horizontal at the back of the eye, and a hairy 'chest' or downy layer on underside of thorax.

Further information on this species: Description of adult, More images, Distribution, Biology

Last reviewed: 4 November 2019
Thanks for your feedback.
Thanks! Your feedback has been submitted.

We aren't able to respond to your individual comments or questions.
To contact us directly phone us or submit an online inquiry

Please verify that you are not a robot.

Skip