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*** Note: KnowYourInsects.org does its best to include correct identifications of insect photos. It’s always possible that we made a mistake, however, so if you see a misidentification, please contact us and we will correct it. Thanks!

Order Blattaria: the roaches — Examples
Families represented below:
Blaberidae (the giant cockroaches)
Blattidae (the blattid cockroaches)
Ectobiidae (the wood cockroaches)

Blaberidae, (the giant cockroaches)

Central American Giant Cave Cockroach (Blaberus giganteus)
Central American Giant Cave Cockroach, Blaberus giganteus, family Blaberidae, (the giant cockroaches).
□ The Central American Giant Cave Cockroach earns its name as giant — males reach 7.5 cm long (3 inches) and females are even larger at 9 cm long (nearly 4 inches)! The brave person holding this cockroach is 8-year-old Anusha, who with her father’s help is putting together her own website dedicated to insect ecology and conservation. Great work, Anusha!
Submitted by: Anusha V. Location: Alley Pond Environmental Center (part of an insect program), Little Neck, New York. Date: 9 September, 2018.
Madagascar Hissing Cockroach (Gromphadorhina portentosa)
Madagascar Hissing Cockroach, Gromphadorhina portentosa, family Blaberidae, (the giant cockroaches).
□ This Madagascar Hissing Cockroach is well-named: it is native to Madagascar and it hisses! It makes the hissing sound through two of its spiracles, which are a series of small organs along the side of the abdomen. Like other insects, the cockroach inhales and exhales through the spiracles. Unlike other insects, the Madagascar Hissing Cockroach can blow air very strongly through two spiracles (the fourth pair on the abdomen) to make the hiss. This roach is in the hand of 8-year-old Vanusha, who has an interesting insect website here.
Submitted by: Anusha V. Location: Alley Pond Environmental Center (part of an insect program), Little Neck, New York. Date: 9 September, 2018.
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Ectobiidae, (the wood cockroaches)

Wood Cockroach in the genus Parcoblatta
Wood cockroach in the genus Parcoblatta, family Ectobiidae, Order Blattaria (the roaches).
Photographed and identified by: Leah McPherson. Location: Highland, MI, USA. Date: 27 July, 2016. Says Leah, “It was less than 1/2" and the only one in sight.... I found it this afternoon on a patio chair.”
Spotted Mediterranean Cockroach (Ectobius pallidus)
Spotted Mediterranean Cockroach (also known as Tawny Cockroach), Ectobius pallidus, family Ectobiidae, Order Blattaria (the roaches).
□ This is a nymph (immature). When it grows into an adult, it will get full-length wings that extend back to cover the abdomen.
Photographed and identified to order by: Janice H. Identified to species by: KnowYourInsects.org. Location: Bloomfield Hills, MI, USA. Date: 13 October, 2016. Says Janice, “We have an old raised rock patio and I think they’re living underneath close to the house. We live near woods and water and I have seen the weirdest bugs ever around our house.”
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Blattidae, (the blattid cockroaches)

Smoky Brown Cockroach (Order Blattaria)
Smoky Brown Cockroach, nymph, Periplaneta fuliginosa, family Blattidae (the blattid cockroaches).
Photographed and identified by: Anonymous. Location: Wilmington, NC, USA. Date: 15 February, 2017. Anonymous says, “This bug seems to have come from a salad from a restaurant... No words for how gross it is!” KnowYourInsects says, “Yep, cockroaches do love people food!”
Pennsylvania Wood Cockroach (Parcoblatta pennsylvanica)
Pennsylvania Wood Cockroach, Parcoblatta pennsylvanica, family Blattidae (the blattid cockroaches).
□ Wood cockroaches are common outdoor insects. Occasionally they’ll come inside on firewood or in a potted plant that gets moved indoors — and sometimes they just wander in accidentally — but they’re almost never an issue indoors.
Photographed by: Suzy Crawford. Identified by: KnowYourInsects.org. Location: Waterford, Michigan, USA. Date: 31 July, 2017. Suzy says, “I find these in my flowers and in grass around my flower beds! Sometimes they are running across my porch or on the screen door.”


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Photos at the top of this website are (from left to right): potato beetle (Leptinotarsa decemlineata) — photo credit: Scott Bauer, U.S. Department of Agriculture; ebony jewelwing (Calopteryx maculata)— photo credit: U.S. Fish and Wildlife Service; sweat bee (Agapostemon splendens) — photo credit: Natalie Allen and Stephanie Kolski, U.S. Geological Survey; preying mantis, monarch butterfly (Danaus plexippus), hellgrammite (aka toe biter) larva and eyed click beetle (Alaus oculatus) — photo credit: Leslie Mertz; Halloween pennant (Celithemis eponina) — photo credit: Kay Meng, U.S. Fish and Wildlife Service.

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