General
The male cockroaches are approximately 25mm – females 32mm long.
Reproduction
The female Oriental cockroaches (the most common in the UK) carry
the oothecae for about 30 hours, after which time she deposits
them, dropping or attaching them near food. Oothecae hatch in approximately
6 weeks, but may be more in cool conditions. In this situation
the egg case may represent a biological ‘time-bomb’ waiting
to hatch and continue an infestation. |
|
| Adult size: |
20-24mm |
| Number of moults: |
7-10 |
| Development time: (Egg to adult) |
6months – 2years |
| Length of adult stage: |
3-6months |
| No. of oothecae produced in female lifetime |
11 Average 1-18 Range |
| No. of eggs produced per oothecae |
16-18 |
Significance
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,
and external brickwork.
|
