Top 7 Biggest Cockroaches In The World

Cockroaches, often associated with an unsettling mix of disgust and fascination, are members of the insect family Blattidae. These insects are notorious survivors, thriving in a wide range of environments and displaying remarkable adaptability.

While the term "big" can be subjective, there are several species of cockroaches that are notably larger than their common counterparts. Despite their size, big cockroaches share many characteristics with their smaller counterparts.

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They have a flattened, oval-shaped body, long antennae, and six legs. Their coloration can vary from species to species, ranging from dark brown to black, which often helps them blend into their natural habitats.

Here we would like to share with you the top 7 biggest cockroaches in the world that will haunt you in your sleep.

7. American Cockroach (4 cm)

The American cockroach, scientifically known as Periplaneta americana, is one of the most widely recognized and infamous cockroach species. Often referred to as the "American roach," "waterbug," or "palmetto bug," this large insect is native to Africa but has become a globally distributed pest due to human activities and trade.

The big American cockroach is indeed impressive in size, with adults reaching lengths of about 1.2 to 2 inches (3 to 5 centimeters). Their reddish-brown to dark brown exoskeleton and flattened, oval-shaped body allow them to squeeze into tight spaces. These roaches possess long antennae, segmented legs with spines, and prominent, fully-developed wings.

This is perhaps the biggest cockroach you will find living in your house and it creeps most of us oftentimes.

 

6. Death’s Head Cockroach (4.4 cm)

The Death's head cockroach, scientifically known as Blaberus craniifer, is a distinctive and intriguing cockroach species. Native to the tropical regions of Central and South America, this large cockroach has earned its common name due to the skull-like pattern on its pronotum, which resembles a human skull.

The Death's head cockroach is one of the larger cockroach species, with adults reaching lengths of approximately 1.5 to 2 inches (3.8 to 5 centimeters). Its most notable feature is the dark, skull-shaped marking on its thorax (pronotum), which contrasts against its lighter-colored body.

In the wild, Death's head cockroaches inhabit forest floors and other humid environments. They are primarily nocturnal creatures as they emerge at night to search for food and mates.

5. Madagascar Hissing Cockroach (7.5 cm)

The Madagascar hissing cockroach, scientifically known as Gromphadorhina portentosa has gained popularity as both a curiosity and, surprisingly, a pet. This cockroach originated from the island of Madagascar and has captured the attention of many people worldwide.

It is one of the largest cockroach species in the world with adults reaching lengths of about 2 to 4 inches (5 to 10 centimeters). They have a flattened, oval-shaped body and are typically dark brown or black in color.

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One of their most distinctive features is their ability to produce a hissing sound. This sound is created by expelling air through specialized openings called spiracles located on their abdomen. The hissing is often used as a form of communication during interactions with other cockroaches, particularly during territorial disputes or mating rituals.

4. Megaloblatta blaberoides (8 cm)

Credit: EOL

Megaloblatta blaberoides belongs to the Blattodea species within the Ectobiidae family. One notable feature of this cockroach is that it holds the world record for the largest wingspan of any cockroach, measuring an impressive 7.1 inches.

Adults can reach lengths of about 2.4 to 4 inches (6 to 10 centimeters). Similar to most wild species of cockroaches, this one is also nocturnal in nature. On top of that, It displays a dark brown to black hue on its upper side, complemented by a light brown underside adorned with orange spots running along its body's flanks.

3. Giant Burrowing Cockroach (8.8 cm)

The Giant Burrowing Cockroach, scientifically known as Macropanesthia rhinoceros, is an intriguing and unique cockroach species that has adapted to a subterranean lifestyle in the arid regions of Australia.

The Giant Burrowing Cockroach lives up to its name, often growing to lengths of around 3 to 4 inches (7.5 to 10 centimeters). Its robust and flattened body is well-suited for its burrowing lifestyle. Its coloration can vary from dark brown to black, which aids in camouflage in its underground environment.

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Unlike some other cockroach species, it lacks wings, which is an adaptation to its burrowing lifestyle. It spends most of its life underground, where it constructs burrows that can extend several feet deep. These burrows provide protection from temperature extremes and predators.

2. Giant Cave Cockroach (Up to 10cm)

The Giant Cave Cockroach, scientifically known as Blaberus giganteus, is a fascinating and impressive cockroach species that inhabits the dark and humid environments of caves and other secluded areas in tropical regions, particularly in South America.

The Giant Cave Cockroach lives up to its name, often reaching lengths of up to 4 inches (10 centimeters) or more. Its robust body is well-suited to its underground habitat. Its coloration is usually dark brown or black, which provides effective camouflage in the dimly lit caves. 

Like other cockroach species, it has six legs, long antennae, and a pair of wings. However, its wings are relatively short, and it is not a strong flier. You would definitely be surprised by the size of this cockroach inside a cave.

1. Megaloblatta Longipennis (11 cm)

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Megaloblatta longipennis is an enthralling and remarkable cockroach species known for its striking size, distinctive appearance, and fascinating behavior. Megaloblatta longipennis earns its place as the largest cockroach species in the world, with individuals often reaching impressive lengths of around 4 to 5 inches (10 to 12 centimeters) or even more.

This notable size, combined with its elongated body, gives it a commanding presence. Its coloration is typically a rich and dark shade of brown, which assists it in blending into its natural surroundings.

Native to the tropical rainforests of Central and South America, Megaloblatta longipennis inhabits the dense foliage and forest floors of its lush habitat. Its large wings and powerful legs allow it to navigate its environment adeptly.

Also read: Top 7 Biggest Centipedes In The World