Links to Information on this Page

Introduction

Specific Species

Links to other Pages


Common House Spider

 

Introduction

Arachnids are of the class Arachnida. These animals are invertebrates, that is, they lack spines. Unlike insects, Arachnids have no wings or antennae. They usually have eight legs. Most Arachnids have two body parts: a combined head and thorax, called the "cephalothorax," and an abdomen. All Arachnids have "chelicerae," fang-like protrusions in front of the mouth. Between the chelicerae and the first pair of legs are the "pedipalps" resembling legs but used to guide food to the mouth and, in the male, for transferring sperm.

There are eight orders of Arachnids found in North America.

Araneae is the order of Spiders. All spiders have four pairs of seven-segmented legs. A spider's cephalothorax and abdomen are separated by a "pedicel" that is a narrow waist area, which differentiates it from a scorpion or daddy-long-legs. The spider's venom is delivered by the chelicerae. Silk glands are located beneath the abdomen near the anus.

Scorpionida is the order of Scorpions. Scorpions have twelve segmented abdomens, the last five segments of which comprise the tail. They have pincers in front that resemble lobster claws. Their tails end in a poisonous stinger. There are no Scorpions native to Maine.

Pseudoscorpionida is the order of Pseudoscorpions. These arachnids are extremely small, under one-quarter of an inch (half a centimeter). They resemble scorpions but lack a tail and stinger. They eat other insects and small worms. There are about 350 species of Pseudoscorpions in the United States and can be found virtually everywhere.

Opiliones is the order of Daddy-long-legs. These Arachnids resemble spiders but have much longer legs.

Acarina is the order of Mites and Ticks. The cephalothorax and abdomen of this Arachnid are connected so as to make them appear as one body.

Uropygi is the order of Whipscorpions. They resemble scorpions but have a whip-like tail in place of a stinger. Whipscorpions are not found in Maine.

Amblypygi is the order of Tailless Whipscorpions. They are not found in Maine.

Solpugida is the order of Windscorpions. These creatures are not native to Maine.

Click here to go to the top of this page

Specific Species

The following columns are specific orders of arachnids found in the area of French Hill Pond. Point and click on the photograph or common name of the species for which you wish a detailed description.

Species will be added as information becomes available.

Araneae Pseudoscorpionida Opiliones Acarina
Common House Spider
Common House Spider
 




Large-jawed Orb Weavers
Large-jawed Orb Weavers
   

Orb Weaver
Orb Weavers
   

Forest Wolf Spider
Forest Wolf Spider
   

 

Click here to go to the top of this page

Links

Fauna of French Hill Pond