Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

See Moth submissions from National Moth Week 2023

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Previous events


Family Blattidae

American Cockroach - Periplaneta americana Periplaneta fuliginosa nymphs? - Periplaneta fuliginosa Smoky Brown Cockroach - Periplaneta fuliginosa Small roach pair seen an night, parcoblatta? - Eurycotis floridana Cockroach - Blatta orientalis - male Cockroach - Periplaneta americana Roach - Periplaneta americana Black Roach - Blatta orientalis
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Blattodea (Cockroaches and Termites)
Superfamily Blattoidea
Family Blattidae
9 spp. (all adventive, except Eurycotis floridana) in 5 genera of 2 subfamilies in our area, ~600 spp. in ~40 genera of 4 subfamilies worldwide(1)
Adults with wings that cover the abdomen: Blatta lateralis males and Periplaneta, males and females of all four species:
Turkestan Cockroach (Shelfordella lateralis) males

American Cockroach (Periplaneta americana)

Australian Cockroach (Periplaneta australasiae)

Smoky Brown Cockroach (Periplaneta fuliginosa)

Brown Cockroach (Periplaneta brunnea)
Similar in appearance to American Cockroach

Adults with wings covering ~75% of the abdomen:
Oriental Cockroach (Blatta orientalis) males

Vestigial wings:
Oriental Cockroach (Blatta orientalis) females - wingpads do not touch in the middle and do not have a pale, lateral stripe:

Turkestan Cockroach (Shelfordella lateralis) females- wingpads do not touch in the middle and have a pale, lateral stripe:

Florida Woods Cockroach (Eurycotis floridana) males and females- wingpads do touch each other in the middle of the back:

Additional species reported from the US
Eurycotis lixa is apparently established in the Florida keys and was originally described as an adventive arriving in New York. Wings do not touch in the middle and do not have a pale stripe, making it look very much like Blatta orientalis females.

The Harlequin Cockroach (Neostylopyga rhombifolia) is an ornate species that would not easily be confused with the other members of this family found in the US. In addition to wild populations in southwestern states, cockroach enthusiasts also keep them as pets.
In general the species found in the US from this family are in areas that are warm and humid, such as the Gulf South. In addition, sewers and steam tunnels provide ideal habitats for some species that have established populations in other areas.
Has a symbiotic relationship with Blattabacterium, a flavobacteria, that assist in providing the insect with sufficient amino acids.(2)