If you see cockroaches, it is best to treat the problem immediately or by calling in a Professional pest control company such as James White Ants Destroying Sdn Bhd.

Pest Library

Harlequin Cockroach control and Facts

Harlequin cockroach


The Harlequin cockroach gets its name from the variegated appearance of the adults.

The scientific name is 'Neostylopyga rhombifolia' (Stoll).



Characteristics ofHarlequin Cockroach:

Size 20-26mm  
Shape oval  
Color black with yellow pattern; tegmina  
Legs 6  
Found Asia, Mexico, AZ (U.S.A.).  

Life cycle
They produce copious amounts of egg cases but require heat and high humidity to thrive.
Nymphs start out life as a plain tan color but slowly molt to become very incredible looking adults.

harlequin cockroach

Why Cockroach Control must be done?

Presence can cause anxiety or stress.

-Secretions can affect some humans (e.g. allergic reactions such as asthma).

-Dense populations can leave a distinct odour.

Food and utensils can be contaminated with droppings, cast skins, empty egg cases and vomit marks.

A number of pathogenic organisms have been associated with cockroaches.

Their ability to act as vectors of pathogens is still a matter of controversy. This is mainly because that transmission can only occur indirectly via contamination of food and utensils.

Pest status applies equally to nymphs and adults..


* Keep cooking, eating and food storage areas clean and dry. *

Cockroaches have aggregation characteristics which builds a more suitable environment to inhabit.

They favour cracks and crevices for harbourages where they can contact the top and bottom surfaces with their body. They do not leave their harbourages except for food, water and mating.

"Their aggregation characteristic can be used against them, since finding a harbourage will yield more than one individual.

Pheromones are not volatile, so contact with other individuals in the population is necessary, which can help spread insecticide to some degree".

If you see cockroaches, it is best to call a Pest Management Professional - 'James White Ants Destroying' due to the illnesses they can spread.

How To Get Rid of Cockroaches


Control should be targetted at their harbourages since they stay in these areas for large amounts of time.

Physical exclusion (e.g. caulking up cracks) is useful since the cockroach population is proportional to the number of harbourages available.

Chemical treatments into cracks and crevices is also valuable since prolonged contact with treated surfaces will yield a high mortality rate.

Applying proper hygiene measures can also be useful, forcing the cockroaches to travel further to find food and water, which increases the chances of contacting treated surfaces outside harbourage areas..

2.Chemical Methods for Cockroach Control

I. Dust

II. Apply a Liquid Residual to the Perimeter

III. Baits & Granules