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The Madagascar hissing cockroach (''Gromphadorhina portentosa''), also known as the hissing cockroach or simply hisser, is one of the largest species of
cockroach Cockroaches (or roaches) are insects belonging to the Order (biology), order Blattodea (Blattaria). About 30 cockroach species out of 4,600 are associated with human habitats. Some species are well-known Pest (organism), pests. Modern cockro ...
, reaching at maturity. They are native to the island of
Madagascar Madagascar, officially the Republic of Madagascar, is an island country that includes the island of Madagascar and numerous smaller peripheral islands. Lying off the southeastern coast of Africa, it is the world's List of islands by area, f ...
, which is off the African mainland, where they are commonly found in rotting logs. It is one of some 20 known species of large hissing roaches from Madagascar, many of which are kept as pets, and often confused with one another by pet dealers; in particular, ''G. portentosa'' is commonly confused with '' G. oblongonota'' and '' G. picea''.Delfosse, E. (2004) Les blattes souffleuses de Madagascar. Insectes 153: 19–22. Unlike most cockroaches, they are wingless. The "hissing" sound (expelling air through their bodies) is their primary defense, to frighten potential predators, as they cannot fly and are easily captured. They are excellent climbers and can scale smooth glass. Males can be distinguished from females by their thicker, hairier antennae and the very pronounced bumps on the pronotum. Females carry the ootheca internally, and release the young nymphs only after her offspring have emerged within her (this is known as
ovoviviparity Ovoviviparity, ovovivipary, ovivipary, or aplacental viviparity is a "bridging" form of reproduction between egg-laying oviparous and live-bearing viviparous reproduction. Ovoviviparous animals possess embryos that develop inside eggs that r ...
). As in some other wood-inhabiting roaches, the parents and offspring will commonly remain in close physical contact for extended periods of time. In captivity, they have been known to live up to 5 years. They feed primarily on vegetable material.


Hissing

As the common name suggests, the Madagascar hissing cockroach is characterized by its "hissing" sound, which some people claim sounds more like a rattlesnake's tail or a rainstick. This is their primary method of warding off potentially insectivorous predators. The sound is produced as the insect forcefully expels air out of their specialized respiratory spiracles (orifices), mainly those that are located on the insect fourth body segment (abdomen), although spiracles are found, more or less, on all segments of their abdomen. The Madagascar hissing cockroach is the only member of their group of cockroaches that can make audible sounds. Compared to crickets, this exact mode of sound production is atypical, as most insects that make noises do so by rubbing together various body parts ("
stridulation Stridulation is the act of producing sound by rubbing together certain body parts. This behavior is mostly associated with insects, but other animals are known to do this as well, such as a number of species of fish, snakes and spiders. The mech ...
"), such as the hind legs. Some long-horned beetles, e.g., the giant Fijian long-horned beetle, hiss by squeezing air out from under their elytra, but this does not involve the spiracles. In hissing cockroaches, the sound takes three forms: the disturbance hiss, the female-attracting hiss, and the aggressive or fighting hiss. All cockroaches from the fourth
instar An instar (, from the Latin '' īnstar'' 'form, likeness') is a developmental stage of arthropods, such as insects, which occurs between each moult (''ecdysis'') until sexual maturity is reached. Arthropods must shed the exoskeleton in order to ...
(fourth molting cycle) and older are capable of the disturbance hiss. Only males use the female-attracting hiss and fighting hiss; the latter is used between males to settle territory disputes over breeding rights. The hissing makes them a popular pet; initially, they will make the noises when picked up, though they quickly calm down and adjust to being handled and observed up-close.


Associations with other animals

The
mite Mites are small arachnids (eight-legged arthropods) of two large orders, the Acariformes and the Parasitiformes, which were historically grouped together in the subclass Acari. However, most recent genetic analyses do not recover the two as eac ...
species '' Gromphadorholaelaps schaeferi'' lives on this species of cockroach along the undersides and bases of the legs and takes some of its host's food as well as consuming particulates along the host's body. As these mites do not harm the cockroaches they live upon, they are
commensal Commensalism is a long-term biological interaction (symbiosis) in which members of one species gain benefits while those of the other species neither benefit nor are harmed. This is in contrast with mutualism, in which both organisms benefit f ...
s, not parasites, unless they build up to abnormal levels and start starving their host. Recent studies have shown that these mites also may have beneficial qualities for the cockroaches, in that they clean the surfaces of the cockroaches of pathogenic mold spores, which in turn increases the life expectancy of the cockroaches.


Popular culture

The Madagascar hissing cockroach has been known to be featured in Hollywood movies, prominently in '' Bug'' (1975), as cockroaches who could set fires by rubbing their legs together, and in '' Damnation Alley'' (1977) as post-nuclear-war mutant armor-plated "killer" cockroaches. In ''
Starship Troopers ''Starship Troopers'' is a military science fiction novel by American writer Robert A. Heinlein. Written in a few weeks in reaction to the US suspending nuclear tests, the story was first published as a two-part serial in ''The Magazine of ...
'', a sci-fi satire film about future humans' war against an alien species called "The Bugs", a teacher is shown encouraging her students to step on this species as part of a TV propaganda broadcast. In 1984, a guest named Adam Zweig appeared on ''
Late Night with David Letterman ''Late Night with David Letterman'' is an American television talk show broadcast by NBC. The show is the first installment of the '' Late Night''. Hosted by David Letterman, it aired from February1, 1982 to June 25, 1993, and was replaced by ...
'', demonstrating his pet Madagascar cockroach "climbing the tightrope over the fires of hell and the pit of doom". A Madagascar hissing cockroach was used by artist Garnet Hertz as the driver of a mobile robotic artwork. They were frequently used in the reality television series ''
Fear Factor ''Fear Factor'' is an American stunt/ dare game show that first aired on NBC from 2001 to 2006 and was initially hosted by comedian and UFC commentator Joe Rogan. The show was adapted by Endemol USA from the original Dutch series titled '' ...
'', where in one episode of the 2002 series, featuring celebrities competing for charity, the host,
Joe Rogan Joseph James Rogan (born August 11, 1967) is an American podcaster, Ultimate Fighting Championship, UFC color commentator, comedian, actor, and former television host. He hosts The Joe Rogan Experience, ''The Joe Rogan Experience'', which is o ...
, ate one as part of a wager with contestant
Alison Sweeney Alison Ann Sweeney (born September 19, 1976) is an American actress, reality show host, director and author. Sweeney is best known for her portrayal of Samantha "Sami" Brady on the NBC soap opera ''Days of Our Lives'', a role she played under c ...
of ''
Days of Our Lives ''Days of Our Lives'' (also stylized as ''Days of our Lives''; simply referred to as ''Days'' or ''DOOL'') is an American television soap opera that aired on the network NBC from November 8, 1965, to September 9, 2022; the soap has streamed n ...
'' after she had what Rogan has since described as "the greatest freak-out in ''Fear Factor'' history" after panicking during a stunt. While normally she would be eliminated, as the show was for charity, it was decided that if she ate 3 worms she would advance to the final stunt regardless. In addition, Rogan would eat a cockroach as part of the bet. The species also made an appearance in the movie ''
Men in Black In popular culture and UFO conspiracy theories, men in black (MIB) are government agents dressed in dark suits, who question, interrogate, harass, and threaten unidentified flying object (UFO) witnesses to keep them silent about what they have ...
'' in 1997. This was later parodied in the comedy '' Team America: World Police'' (2004), where a cockroach emerges from a
Kim Jong-il Kim Jong Il (born Yuri Kim; 16 February 1941 or 1942 – 17 December 2011) was a North Korean politician who was the second supreme leader of North Korea from the death of his father Kim Il Sung in 1994 until his death in 2011, when he was ...
puppet's body after his death, enters a tiny spaceship, and flies away. In September 2006, amusement park
Six Flags Great America Six Flags Great America is a amusement park, theme park located in Gurnee, Illinois, within the northern Chicago metropolitan area. The theme park originally opened as Marriott's Great America on May 29, 1976, as one of two theme parks built ...
announced that it would be granting unlimited line-jumping privileges (for all rides) to anyone who could eat a live Madagascar hissing cockroach, as part of a
Halloween Halloween, or Hallowe'en (less commonly known as Allhalloween, All Hallows' Eve, or All Saints' Eve), is a celebration geography of Halloween, observed in many countries on 31 October, the eve of the Western Christianity, Western Christian f ...
-themed promotion for their annual FrightFest. Furthermore, if a contestant managed to beat the previous world record (eating 36 cockroaches in 1 minute), they would receive season passes, for four people, for the 2007 season. Despite any protein or additional nutrients, cockroaches contain a mild
neurotoxin Neurotoxins are toxins that are destructive to nervous tissue, nerve tissue (causing neurotoxicity). Neurotoxins are an extensive class of exogenous chemical neurological insult (medical), insultsSpencer 2000 that can adversely affect function ...
that numbs the mouth and makes it difficult to swallow. The promotion ended on October 29, 2006. Since 2011 the
Bronx Zoo The Bronx Zoo (also historically the Bronx Zoological Park and the Bronx Zoological Gardens) is a zoo within Bronx Park in the Bronx, New York City. It is one of the largest zoos in the United States by area and the largest Metropolis, metropol ...
has held a roach-naming and gifting program themed for
Valentine's Day Valentine's Day, also called Saint Valentine's Day or the Feast of Saint Valentine, is celebrated annually on February 14. It originated as a Christian feast day honoring a Christian martyrs, martyr named Saint Valentine, Valentine, and ...
allowing their Madagascar hissing cockroaches to be named by benefactors. Funds raised are donated to
Wildlife Conservation Society The Wildlife Conservation Society (WCS) is a global 501(c)(3) organization, 501(c)(3) non-governmental organization, headquartered at the Bronx Zoo in New York City, with a mission to save "wildlife and wild places across the globe". Founded in ...
, the parent nonprofit organization of the zoo.


As pets

Madagascar cockroaches can be kept as exotic pets. They require a small living area with an area for them to hide because they dislike light sources. The cockroaches prefer warmth and cannot function in cold weather. Due to their propensity to climb, the living area must be tested to see if they can climb it as they do in their natural environment. Fish tanks with screens work best but it is also wise to coat the top few inches with
petroleum jelly Petroleum jelly, petrolatum (), white petrolatum, soft paraffin, or multi-hydrocarbon, CAS number 8009-03-8, is a semi-solid mixture of hydrocarbons (with carbon numbers mainly higher than 25), originally promoted as a topical ointment for i ...
to keep them from getting out of the habitat that they are kept in. They can live on fresh vegetables along with any kind of pellet food that is high in protein, such as dry dog food. In the US, some states require permits before this species can be kept as a pet or in breeding colonies. The state of Florida requires such a permit. This is because of the similarity between Madagascar and Florida in climate, which makes them potentially invasive. In fact, during outreach programs, the University of Florida's Department of Entomology and Nematology, which has such a permit, allows only males to be taken out of the laboratory. This is to prevent the possible introduction of a pregnant female into the environment. It is also possible to raise them to feed other pets, as they are reasonably high in protein. Reptiles are often given roaches as food.


References


External links


CockroachGuy.com ~ Care information and photos dedicated to the Madagascar Hissing CockroachRearing cockroaches and details of a society dedicated to keeping cockroaches


– Cockroach-controlled mobile robot story in Wired News {{Taxonbar, from=Q1073729 Cockroaches Endemic fauna of Madagascar Insects described in 1853 Insect rearing