Spotted Locust

Aularches miliaris · Order: Orthoptera · Family: Pyrgomorphidae

Damages trees, gardens or crops. It can squirt irritating mucus when handled and is an occasional pest of cultivated crops.

Source: Wikipedia

Spotted Locust
Photo: Jason Alexander, CC BY

Adults are 3.7 to 6.9 cm long, dark green with a yellow side band, green wings spotted yellow, blue legs with yellow patterns. They swarm in October to mate and lay eggs in soil, which can be disturbed by tilling. Native to South and Southeast Asia, they are rarely a serious threat to crops.

Source: Wikipedia

Size

Males measure about 3.7 to 5.5 cm and females about 4.7 to 6.9 cm in length.

Source: Wikipedia

Is it a pest in the house?

Like many grasshoppers, it is considered a pest in agricultural areas.

Source: Wikipedia

Does it bite or sting?

When disturbed it makes a sharp rasping noise from its thorax. If the thorax is pinched it squirts a clear, viscous mucus that smells bad, tastes bitter, is faintly alkaline, and contains many bubbles.

Source: Wikipedia

How to get rid of it

Tilling the soil where eggs are deposited can reduce their numbers. Collecting the grasshoppers or applying pesticides can also control populations, though pesticides may harm other organisms.

Source: Wikipedia

Where it lives

They gather on bushes and grasses during their October swarming season. Outbreaks that damage cultivated crops are uncommon.

Source: Wikipedia

What it eats

Egg laying in soil helps aerate the ground and supports biodiversity.

Source: Wikipedia

Life cycle

Females lay eggs in the soil, which later hatch into nymphs.

Source: Wikipedia

When you see it

Swarming, mating, and egg-laying all occur in October.

Source: Wikipedia

Where it comes from

It is native to South and Southeast Asia.

Source: Wikipedia

More photos

Questions people ask

How can I get rid of a swarm?

Tilling the area to destroy egg pods or manually collecting the insects are effective; pesticides work but can affect other wildlife.

Source: Wikipedia

What does it look like?

It has a dark-green head and thorax with a yellow side band, green wings dotted with yellow spots, and blue legs with yellow patterns on the hind femora.

Source: Wikipedia

When are they most active?

They swarm, mate, and lay eggs in October.

Source: Wikipedia

Does it bite or sting?

If handled, it may hiss and spray an irritating, bitter-tasting mucus from its thorax.

Source: Wikipedia

Same family (Pyrgomorphidae)

Sources

  • Wikipedia: https://en.wikipedia.org/wiki/Aularches

Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia

Text written 2026-10-24 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-23.

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