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Cockroaches develop in three stages, egg, nymph and adult. Each cockroach species has their own physiological and biological way of reproducing, which means each species eggs look different.
Cockroaches produce an egg sac, called an ootheca, which holds multiple eggs. The amount of eggs each ootheca holds depends on the species of cockroach.
German cockroach egg casings are brown and in a capsule-like shape, roughly 8 mm long. The common roach species has a higher reproduction rate compared to other roach species. A single female German cockroach can produce 40 or more eggs per case and develop faster from embryo to the next adult stage compared to its cockroach counterparts.
Oriental cockroach eggs have been found to tolerate lower temperatures than other species of cockroaches. Their egg casings look dark brown or even reddish with a length of 8 to 10 mm. A female Oriental cockroach may lay one to 18 egg cases per lifetime. Eggs are typically deposited near food or water and embryos develop in about 43 days in optimal temperatures. But, in cooler temperatures, this time period may double.
Female American cockroaches only need to mate once to produce multiple oothecae because females can store sperm. Each ootheca holds about 16 eggs and are dark reddish or blackish brown in color. Their egg capsules are roughly 38 mm long. Females guide their ootheca to hard surfaces such as cupboards, cardboard and other materials. The ootheca often blends in with these surfaces which can make eggs hard to find and remove.
Female Brownbanded cockroaches carry matured ootheca cases for 24 to 36 hours and tend to place egg cases close to one another. Their egg casings are small, measuring out to about 5 mm in length and are tan in color. Oothecae are typically placed on coarse surfaces. Eggs develop best in warm temperatures and one egg case contains about 13 eggs.
Hissing cockroach ootheca looks like a long, yellowish white worm. A female can produce over 30 ootheca and hatch over 750 in her lifetime. She will release her ootheca and then draw it back into her body where nymphs will be hatched.
The best way to get rid of cockroaches is to partner with a professional pest control service like Western Exterminator to remove existing infestations and prevent them in the future. Call 888-674-0921 or contact us online.
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