Spiders
Spiders exist within the class of arachnids, which also includes
ticks, mites and scorpions. A spider’s body is divided into two sections, a cephalothorax, containing
the eyes, mouthparts, and legs and an abdomen, containing the genitals,
spiracles and anus. Unlike insects, spiders have eight legs and lack antennae. Spiders also have the unique ability to spin silk which is used
to make webs for trapping prey or transportation/escape.
Spiders are beneficial because they feed heavily on insects, thus
helping to keep global numbers in check. Some spiders (like the
funnel building Grass Spider) wait for prey to get caught in their webs while
others (like the Dark Fishing Spider) actively hunt for prey.
Spiders inhabit every
continent except for Antarctica and have been on earth since the Triassic
period, over 200 million years ago. Scientists have currently identified approximately
45,700 different species of spiders. Currently 40 different species of spiders
call Maine home.
Only a relatively small number of spiders are very poisonous and
even these seldom bite humans unless provoked. Because many people have a
strong aversion to spiders, they tend to be killed indiscriminately
even if they are harmless. Only two spiders have been found in Maine that are
dangerous to human. While not Maine natives, both the black widow and brown recluse spiders occasionally hitch hike their
way into the state via shipping boxes, old furniture or luggage. For this
reason, it is important when traveling or receiving clothing or furniture from
southern climates that they be thoroughly inspected for possible infestation.