Praying mantis


A praying mantis, or praying mantid, is the common name for an insect of the order Mantodea. Often mistakenly spelled preying mantis (a tempting mistake, as they are notoriously predatory) they are in fact named for the typical "prayer-like" stance. The word mantis derives from the Greek word mantis for prophet or fortune teller. The preferred pluralization is mantids,[1] though there is some usage of mantes or mantises. The world's largest praying mantis was recorded at 45cm (18") long, in Southern China, in 1929.

Like all insects, a praying mantis has a three segmented body, with a head, thorax and abdomen. The abdomen is elongate and covered by the wings in adults. Females have strong and large cerci. The first thoracic segment, the prothorax is elongated and from it arises the modified foreleg.

Senses

Praying mantids, with their huge compound eyes mounted on the triangular head, have a large field of vision. They use sight for detection movement of prey and turn their mobile head to bring their prey into their binocular field of view. They are able to turn their head 180 degrees for excellent vision and hearing. Their antennae are used for smell.

Habitat

Praying mantids can be found in all parts of the world with mild winters and sufficient vegetation. Praying mantids will spend most of their time in a garden, forest or other vegetated area.

Diet

Being a carnivorous insect, the mantis feeds primarily on other insects. However, it is not uncommon for larger mantids to consume small reptiles and even small mammals or birds.

To capture their prey, mantids use their camouflage to blend in with the surroundings and wait for the prey to be within striking distance. They then use their raptorial front legs to quickly snatch the victim and devour it alive.

Predators

The primary predators of the praying mantis are frogs, monkeys, larger birds, spiders and snakes. Praying mantids will also prey on each other, usually during the nymph stage and during mating (Patterson).

Defense mechanisms

When threatened, praying mantids stand tall and spread their forelegs with their wings fanning out wide and mouths open (Patterson). The fanning of the wings is used to make the mantis seem larger and to scare the opponent, with some species having bright colors and patterns on their hind wings and inner surfaces of their front legs for this purpose. If harassment persists, the mantis will then strike with their forelegs and attempt to pinch or bite.

Since praying mantids feed during the day, they do a considerable amount of flying by night. The night, however, is when bats feed, using ultrasonic sound waves to pinpoint their prey. The frequency of these sound waves indicates the location and distance of the bat's prey. According to Yager and May, praying mantids are able to hear these ultrasonic sounds and when the frequency begins to increase rapidly, indicating an approaching bat, mantids will stop flying horizontally and begin a direct, high speed nose dive towards the safety of the ground. Often this descent will be preceded by an aerial loop or spin. Other times, the entire descent will consist of a downward spiral.

Endangered status

Most North American mantids are not included among endangered species, but species in other parts of the world are under threat from habitat destruction.

Pest control

Praying mantids are not considered one of the best forms of natural control of small insects in gardens. This is because mantids are indiscriminate predators, and often feed on the small insects that are natural, and more efficient, predators of the insects that can take a heavy toll on plant life (beetles, caterpillars, etc.).

Patterson describes how gardeners will often search for ootheca and carefully move them while still connected to their holding structure and place them in the refrigerator to prevent premature hatching. The ootheca will keep the unborn nymphs alive in the refrigerator until the spring arrives and they are ready to hatch. This allows for the mantis nymphs to be born in the garden and spend their lives protecting the plants from insects that may harm the vegetation.

Lifespan

The natural lifespan of a praying mantis is about two years. In colder areas, mantids will die during the winter. In captivity, if kept correctly, and in warmer areas in the wild, mantids can live up to three years.

Pets

Praying mantids are often kept as pets, their unique behavior and generally easy rearing requirments making them popular in the exotic pet trade, rivaling tarantulas and scorpions. An average-sized insect container or fish tank will make a suitable home. They require branches to climb on, insects to hunt, and water to drink. They will drink sprayed water out of a bottle and eat crickets, widely available in pet stores. If fed too much, their abdomen can burst, killing the mantis. Hatchlings should ideally be fed on a diet of fruit flies.

Species

According to Patterson, the majority of the 1,800 species of praying mantids are found in Asia. About 20 of those species are found in North America and Europe. The Asian species as well as a few of the North American ones are native to their land. The others came from Asia among plants being shipped from one continent to the other, or deliberately introduced to act as pest control for agriculture as wth the European and Chinese mantises.

For a more detailed treatment of this insect, see Mantodea.

In popular culture

References

  1. Walkup, Richard L. “Praying Mantis Makes Meal of a Hummer.” Bird Watcher’s Digest. 2006. Bird Watcher’s Digest. 27 October 2006. http://www.birdwatchersdigest.com/site/backyardbirds/hummingbirds/mantis-hummer.aspx.
  2. Insecta Inspecta. “Praying Mantis.” Insecta Inspecta World. 1 June 2004. Insecta Inspecta, Inc. 27 October 2006. http://www.insecta-inspecta.com/mantids/praying/index.html.
  3. The Big Zoo. “Praying Mantis.” The Big Zoo. 2006. Thebigzoo. 27 October 2006. http://www.thebigzoo.com/Animals/Praying_Mantis.asp.
  4. Patterson, Kathleen J. “The Praying Mantis.” Conservationist 47.6 (1993): 30. Academic Search Premier. 31 October 2006. http://search.ebscohost.com.
  5. Breeding “praying mantis” in captivity. Insectstore. 14 December 2006. http://insectstore.com/praying_mantis_breeding_guidelines.php
  6. Yager, David, and Mike May. “Coming in on a Wing and an Ear. (Cover Story).” Natural History 102.1 (1993): 28. Academic Search Premier. 31 October 2006. http://search.ebscohost.com.

External links

<gallery> Image:Female_mantis_devouring_male_So_Calif.jpg|Female mantis devouring male (Calif) Image:AdultNorthAmericanRockyMountainPrayingMantis.jpg|Mature mantis from the Rocky Mountains of North America (USA) Image:Praying_mantis_on_a_gum_tree.jpg|Mantis on a Gum tree (Australia) Image:Australian Praying Mantis.jpg|Mantis (Melbourne, Australia) Image:ChipequeWikipedia.jpg|Paramantis prasina seems to like Wikipedia Image:IMGP1747 WEB.jpg|Mantis nymphs clinging to a leaf (Israel) Image:Iris oratoria01.jpg|Iris oratoria Image:Manthesoudan.jpg|Sudanese mantis Image:Mantide religiosa Marius 050925.jpg|Mantis religiosa Image:Mantis egg 2005 Spring 001.jpg|Mantis ootheca Image:Mantis_ootheca.jpg|Mantis ootheca Image:Mantis religiosa 01.jpg|Mantis religiosa Image:Mantis religiosa.JPG|Mantis religiosa (Pelegrina, Guadalajara) Image:Mantis2 6065.jpg|Carolina mantis Image:Mantisnymph.jpg|Mantis nymph, about 4mm long (Israel) Image:Mantispidae fg1.jpg|Mantispidae Image:Mantodea.JPG Image:Mantodea-1.JPG Image:NG-PrayingMantis.jpg|An adult Chinese mantis walking on glass Image:Praying mantis cleaning.jpg|Mantis cleaning itself Image:Praying mantis egg pod1.jpg|Mantis ootheca Image:Praying mantis feeding.jpg|Mantis feeding on a fly (New Zealand) Image:Praying_mantis_india.jpg|Mantis in India Image:Praying mantis on eucalypt.jpg|Mantis on Eucalyptus tree Image:Praying mantis on post02.jpg Image:Praying mantis on raspberry.jpg|Mantis on raspberry Image:Praying Mantis.jpg|Mantis Image:Sqeat2.JPG|Mantis eating a cricket (Philippines) Image:Tenodera.aridifolia.jpg|Tenodera aridifolia Image:Tinymantis.jpg|Juvenile mantis (Texas) Image:Zorak-Mantis.png|Chinese mantis (Georgia) Image:Praying_Mantis_001.jpg|Mantis in defense posture (Malaysia) Image:Target.gif|Flower #9 Mantis </gallery>

Citations