House centipede
The house centipede, Scutigera coleoptrata, is a
native of Mexico which also currently occurs throughout
much of the United States, including Michigan. Unlike
other centipedes, this species is capable of reproducing
indoors, and in the cooler regions occurs exclusively
indoors. They favor houses with crawl spaces or damp
basements.
The house centipede is quite distinctive in
appearance. It is 1 to 1.75 inch long with 15 pairs of
long, slender legs (however, various immature stages may
have 5 to 13 pairs of legs). The head bears a pair of
long antennae and compound eyes. The grayish-yellow body
has three dorsal longitudinal stripes and the legs are
banded with white.
The house centipede is very agile. They run rapidly
with the aid of their long legs, often stopping suddenly
and remaining motionless. They prey upon many species of
insects, spiders and other invertebrate animals,
paralyzing them with a pair of special "poison jaws"
located on the underside of the body immediately behind
the head. They are readily capable of detaching their
legs if grabbed by a prospective prey or other enemy.
There are a few reports of this species biting man,
causing a localized pain no more severe than a bee sting.
The wound should be cleaned to prevent secondary
infection and ice can be applied to reduce swelling. The
centipedes are most likely to bite if handled or stepped
on.
If you choose to use an insecticide out of doors,
apply diazinon 25% EC on foundation walls, under eaves
and other areas where they gather. Do not use diazinon
inside the household. Indoors, ready to use formulations
of chlorpyrifo or propoxur is suggested.
For a complete listing of suggested control options
for all home, yard and garden insect pests contact your
local Extension Service, found under local government in
the phone book.