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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Articles with ‘species’ microformats Commons category link is on Wikidata. Ampulex sinensis SaussureChlorampulex striolata Saussure, Sphex compressus Fabricius, This has been unsuccessful because of akpulex territorial tendencies of the wasp, and the small scale on which they hunt. It also causes excessive grooming and alterations in the metabolism of the cockroach.

Wikispecies has information related to Ampulex compressa. Over a period of 8 days, the wasp larva consumes the roach’s internal organs in an order which maximizes the likelihood that the roach will stay alive, at least until the larva enters the pupal stage and forms a cocoon inside the roach’s body.

The second sting is administered to the subesophageal ganglion SEG and is much more precise, hence the need for paralysis and is significantly longer. Retrieved from ” https: Views Read Edit View history. The emerald cockroach wasp or jewel wasp Ampulex compressa is a solitary wasp of the family Ampulicidae. Retrieved 7 December With its escape reflex disabled, the stung roach simply rests in the ampuelx as the wasp’s egg hatches after about 3 days.


When they are injected together in a ratio of Development is faster in the compdessa season.

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. The concoction temporarily blocks the motor action potentials in the prothoracic ganglion by depressing cholinergic transmission through the increased chloride conductance across nerve synapses. It then exits and proceeds to fill in the burrow entrance with pebbles, more compresxa keep other predators out than to keep the roach in.

The wasp actively searches for the SEG during ajpulex sting.

Emerald cockroach wasp – Wikipedia

They also determined using extracellular bipolar electrodes that neuronal activity was less in stung cockroaches. The metabolic change is thought to preserve nutrients for the wasp larva. Mating takes about a minute, and only one mating is necessary for a female wasp to successfully parasitize several dozen roaches.

The wasp proceeds to chew off half of each of the roach’s antennae. Archived from the original on From Wikipedia, the free encyclopedia. This page was last edited on 25 Decemberat Archives of Insect Biochemistry and Physiology.

Ampulex compressa – Wikipedie

Journal of Comparative Physiology. Several other species of the genus Ampulex show a similar behavior of preying ampulxe cockroaches. By using this site, you agree to the Terms of Use and Privacy Policy. Ampulex compressa Fabricius A study [3] using radioactive labeling demonstrated that the wasp stings precisely into specific ganglia of the roach.


As early as the s, female wasps of this species were reported to sting a cockroach specifically a Periplaneta americanaPeriplaneta australasiaeor Nauphoeta rhombifolia [1] twice, delivering venom.

Ampulex compressa

The wasp is mostly found in the tropical regions of South AsiaAfricaand the Pacific islands. Basically, it limits the effectiveness of octopamine, the neurotransmitter that controls muscle contraction in sudden movements. The flying wasps are more abundant in the warm seasons of the year. 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.

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The venom may disturb the octopaminergic modulation in structures within the roach’s ganglion. The biochemical basis of this transient paralysis is discussed in a paper. Emerald cockroach wasp Ampulex compressa Scientific classification Kingdom: