Hissing Cockroach Scientific Name
Madagascar hissing cockroaches (Gromphadorhina portentosa) are omnivores that feed on decaying organic matter and can measure up to 7.5 cm in length. However, despite their large size, Madagascar hissing cockroaches are capable of hiding within incredibly narrow spaces.
Madagascar hissing cockroaches are brown in color, wingless and have long antennae. Males have larger pronotal humps on the thorax and bushier antennae than females. Their common name is derived from the ability of both sexes to make hissing sounds by releasing air through their enlarged spiracles. This hissing is used to communicate with the rest of the colony, as well as to threaten and warn away predators. Males are particularly aggressive and have been known to remain within their colonies for months at a time in order to protect them from harm.