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Agelenidae—Funnel Weavers Amaurobiidae—Hackledmesh Weavers Araneidae—Orbweavers Clubionidae—Sac Spiders Dysderidae—Dysderid Spiders Lycosidae—Wolf Spiders Miturgidae—Prowling Spiders Pisauridae—Nursery Web Spiders Pholcidae—Cellar or Daddylonglegs Spiders Salticidae—Jumping Spiders Sicariidae—Sixeyed Sicariid Spiders Theridiidae—Cobweb Weavers Photographs courtesy of Steven Jacobs. Prepared by Steven Jacobs, |
Annulated—colored with darker banding and frequently referring to banded legs Antivenom—a chemical antidote designed to counteract the effects of specific venom; also called antivenin Ballooning—a behavior exhibited by some newborn arthropods wherein a recently hatched arthropod spins out some silk, which then catches the wind and carries the immature arthropod for a distance Carapace—the hard integument forming the dorsal surface of the cephalothorax (not including the appendages) Cephalothorax—the fused head/thorax region, as found in spiders Chelicerae—(sing., “chelicera”) the front jaws of a spider consisting of a stout basal segment and a terminal fang Chevron—a figure, pattern, or object having the shape of a “V” or an inverted “V” Cytotoxin—any material that is destructive to cells Distal—that portion of a structure that is farther from the central body (e.g., a human wrist is distal to the elbow) Edema—excessive fluid buildup in cells or tissues Envenomation—the introduction of venom into the body of another organism as a defense or feeding mechanism Erythema—a flush on the skin surface produced by congestion within the capillaries Femora (femur)—the third segment of the spider leg following the coxa and trochanter Folium—a pattern or design on the abdomen surface Millimeter—metric unit of length (25 mm = 1 inch) Necrotic—tissue in a dead or decaying condition Neurotoxin—any material that causes damage to the nervous system Palps—(also “palpi” or “pedipalps”) paired, forward-projecting sensory organs of spiders located behind the chelicerae but in front of the legs; the second appendages of the cephalothorax Papules—small, inflamed, congested areas of the skin Patella—the fourth segment of the spider leg following the coax, trochanter, and femora (femur) Penultimate instar—the next-to-last developmental stage of an arthropod before it molts into an adult Procurved—eyes that are arranged in an upside-down “U” when viewed from the front Pruritus—itching skin Spinnerets—appendages that produce silk and are located at the posterior portion of the abdomen Stabilimentum—a heavy band of silk deposited in the center of the web of some of the orb weaving spiders Tarsi—the last or terminal segments of a spider’s legs bearing two or occasionally three claws Tibia—the fifth segment of the spider leg following the patella and preceding the tarsi Venom—a poisonous substance that is produced by various animals (e.g., spiders, scorpions, and other arthropods; snakes and certain lizards) for defense or to subdue prey; can cause pain and swelling but rarely fatality when injected into humans Venter—the underside of the spider; typically referring to the abdomen
Authored by: Steve Jacobs, Sr. Extension Associate March
2002 ©
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