Supella

Shelford, 1911

brown-banded cockroaches

Supella is a of small, in the , with the -banded cockroach (S. longipalpa) being the most widespread and well-known . to Africa and the Arabian Peninsula, the genus has achieved distribution through human-mediated transport. Members of this genus are distinguished by transverse pale across the and , pronounced in wing development, and a preference for warm, dry indoor environments. The species S. longipalpa is a significant public health pest that completes its entire within human-built structures.

Supella longipalpa by (c) B. Phalan, some rights reserved (CC BY), uploaded by B. Phalan. Used under a CC-BY license.

Supella longipalpa by (c) jhammock, some rights reserved (CC BY), uploaded by jhammock. Used under a CC-BY license.

Supella longipalpa cdc by wikipedia. Used under a Public domain license.

Pronunciation

How to pronounce Supella: /suˈpɛl.la/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Supella are distinguished from other domestic by two pale transverse across the and —features that are especially visible in before wings develop. is pronounced: males possess fully developed wings that extend beyond the abdomen and functional enabling , while females have short, non-functional () that leave most of the abdomen exposed. The is smaller than Periplaneta ( cockroaches) and differs from in body shape and banding pattern. Females are readily identified by their broad, rounded bodies and wings.

Images

Habitat

Primarily indoor environments; strongly associated with human-built structures. Prefers warmer, drier locations than many other domestic , including behind wall-mounted pictures, inside electrical appliances, furniture, and computer equipment. In natural settings, some occur in wild in Africa and the Arabian Peninsula.

Distribution

in distribution due to human-mediated transport. to Africa and the Arabian Peninsula; now established worldwide in urban environments. Documented across North America (present in 47 of 48 contiguous U.S. states by 1967, excluding Vermont), Europe (including first records from Baltic countries in 2016), Asia, and other inhabited continents.

Seasonality

Active year-round in indoor environments with stable temperatures. Activity patterns show circadian rhythmicity with peak behavioral responses and calling occurring during scotophase (dark period).

Diet

; feeds on starchy materials including bookbinding paste, wallpaper paste, and food residues. In laboratory colonies, thrives on standard rat food and dog chow. Consumes including starch, glucose, and sucrose when available.

Life Cycle

development with . Undergoes 6–8 molts from early through late instar nymphs to . Females carry capsules () externally for 24–36 hours before depositing them on rough vertical surfaces. Oothecae frequently deposited in clusters on upper wall surfaces and corrugated cardboard. Entire completed strictly indoors for .

Behavior

Females exhibit strong site fidelity, returning to preferred locations for capsule deposition. Males demonstrate circadian rhythmicity in response to female , with peak responsiveness during scotophase; responsiveness increases with age and peaks approximately 10 days after . Females exhibit calling with peak activity in scotophase. When disturbed, males are quick to while females remain flightless. Aggregates in harborages.

Ecological Role

Public health pest; serves as mechanical for and source of allergen exposure. microbiome dominated by Lactobacillus and Akkermansia may provide against ingested human pathogens. Serves as for oothecal including Comperia merceti and Anastatus tenuipes. Some harbor endosymbionts that may influence reproductive biology.

Human Relevance

Significant domestic pest, particularly S. longipalpa, which infests homes, universities, restaurants, and food premises worldwide. Associated with poor perception, food , and allergen exposure. Nicknamed "TV " due to habit of sheltering in electrical appliances; body fluids from molting or dead specimens can cause short circuits. Subject of automated research using AI and computer vision for in urban pest management.

Similar Taxa

Blattella germanica is similar in size and domestic but lacks the transverse pale ; has fully winged females and different thermal preferences.
Periplaneta americana is substantially larger, lacks banding pattern, and prefers moister environments.
Blatta lateralisTurkestan shares similar size range and domestic tendencies but lacks distinct banding and shows different in females.