If you haven’t already met Ampulex compressa, otherwise known as the jewel wasp, now is as good a time as any. Someday you may be very. Ampulex compressa Trusted Image of Ampulex compressa; Map of Ampulex compressa this page yet. Explore what EOL knows about Ampulex compressa. The Emerald Jewel Wasp Ampulex compressa (Fabricius) is an endoparasitoid of the American cockroach Periplaneta americana (Linnaeus).

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With its escape reflex disabled, the stung roach simply rests in the burrow as the wasp’s egg hatches after about 3 days. Mating takes about a minute, and only one mating is necessary for a female wasp to successfully parasitize several dozen roaches.

The concoction temporarily blocks the motor action potentials in the prothoracic ganglion by depressing cholinergic transmission through the increased chloride conductance across nerve synapses. The second sting is administered to the subesophageal ganglion SEG and is much more precise, hence the need for paralysis and is significantly longer.

The wasps with the passion for horror: Ampulex compressa

It also causes excessive grooming and alterations in the metabolism of the cockroach. A study [3] using radioactive labeling compressx that the wasp stings precisely into specific ganglia of the roach. As a result of this sting, the roach will first groom extensively, and then become sluggish and fail to show normal escape responses. The wasp, which is too small to carry the roach, then leads the victim to the wasp’s burrowby pulling one of the roach’s antennae in a manner similar to a leash.


The hatched larva lives and feeds for 4—5 days on the roach, then chews its way into its abdomen and proceeds to live as an endoparasitoid. They also determined using extracellular bipolar electrodes that neuronal activity was less in stung cockroaches.

The biochemical basis of this transient paralysis is discussed in a paper. By using this site, you agree to the Terms of Use and Privacy Policy.

The metabolic change is thought to preserve nutrients for the wasp larva. The emerald cockroach wasp or jewel wasp Ampulex compressa is a solitary wasp of the family Ampulicidae. Wikispecies has information related to Ampulex compressa. Emerald cockroach wasp Ampulex compressa Scientific classification Kingdom: From Wikipedia, the free encyclopedia.

Ampulex compressa Fabricius The second sting inhibits the cockroach’s ability to walk spontaneously, or of its own will, but cockroaches can right themselves and swim while under the influence, and when startled, will jump but not run.

It delivers an initial sting to a thoracic ganglion and injects venom to mildly and reversibly paralyze the front legs of its victim.

Ampulexins: A New Family of Peptides in Venom of the Emerald Jewel Wasp, Ampulex compressa.

When they are injected together in a ratio of Researchers have simulated this zombie state by injecting procaine into the SEG. While a stung roach exhibits drastically reduced survival instincts such as swimming, or avoiding pain for about 72 hours, motor abilities such as flight or flipping over are unimpaired.

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The venom may disturb the octopaminergic modulation in structures within the roach’s ganglion. Adults live for several months. Not Exactly Rocket Science News. Ampulex sinensis SaussureChlorampulex striolata Saussure, Sphex compressus Fabricius, The wasp is mostly found in the tropical regions of South AsiaAfricaand the Pacific islands. It is known for its unusual reproductive behaviorwhich involves stinging a cockroach and using it as a host for its larvae.

Individually, all of these substances induce short-term paralysis of the cockroach. Retrieved 7 December Eventually, the fully grown wasp emerges from the roach’s body to begin its adult life. In other projects Wikimedia Commons Wikispecies.

Ampulexins: A New Family of Peptides in Venom of the Emerald Jewel Wasp, Ampulex compressa.

While a number of venomous animals paralyze prey as live food for their young, A. This page was last edited on 25 Decemberat The wasp has a metallic blue-green body, with the thighs of the second and third pair of legs red. Archived from the original on Retrieved from ” https: Development is faster in the warm season.

It thus belongs to the entomophagous parasites. Williams in as a method of biocontrol. The first sting is delivered to the prothoracic ganglion mass of nerve tissue which causes a 2— to 3-minute comprexsa of the front legs.