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Oriental cockroach

Key features


The male cockroaches are approximately 25 mm long with females 32 mm long.


Both sexes are shiny and very dark brown, nearly black, in appearance. However, the early instar nymphs may be reddish-brown.


The distinctive shape of the wings in noticeable in this species. In the males they cover approximately two thirds of the abdomen, whereas those of the female are vestigial.


Biology


The female Oriental cockroach carries the oothecae for about 30 hours, after which time she deposits them, dropping or attaching them near to a food source.


Oothecae hatch in approximately six weeks, but this period may be greatly extended in cool conditions. In this situation the egg case represents a biological time bomb waiting to hatch and continue an infestation. For this reason repeated use of insecticides may be needed.


Adult size:                                                               20-24mm

Number of moults:                                                   7-10

Development time: (egg to adult)                              6 mths – 2 years

Length of adult stage:                                               3-6 months

No og oothecae produced                                       Average 11

In female lifetime:                                                     Range 1-18

No of eggs produced per ootheca .                         16-18


Significance


This is the most common cockroach in the United Kingdom.


It is found throughout the world although its status as a pest varies, for example in the USA, it is considered to be a pest of gardens primarily, from where it wanders into property.


Oriental cockroaches are poor climbers on smooth surfaces, which may limit their distribution within a building.


They appear to be cold tolerant in that they are often found outside buildings, in drains, gardens, sewers, external brickwork ect, a factor which should be remembered when attempting to control them.  


Control

Please Call East Lancashire Pest Control on 0800 023 6116 for a free visit and quote.