Pest Guides

Dusky Cockroach

Ectobius lapponicus

Appearance

 

Dusky Cockroach
  • Adult males 9–11mm.
  • Adult females 6–8mm.
  • Body dark grey–brown except for dark male pronotum and female dark brown abdomen.

Lifecycle

  • Egg cases, know as oothecae, are produced and carried by the female for one or two days between June and September.
  • The oothecae overwinter on the ground and the nymphs hatch in the spring.
  • The nymphs hibernate during the late stages of development to become adult in July.
  • The adults die in September to October.

Habits

  • The dusky cockroach is mainly ground–dwelling and favours scrub, grassland and woodland habitats.
  • Males only fly in warm weather.