The Truth About Granddaddy Longlegs

Monday, June 23, 2008 - by Kyle Waggener, Chattanooga Nature Center

Are Granddaddy-longlegs the most poisonous spider in the world but their fangs are too small to bite us?

Actually, granddaddy-longlegs are not spiders. They are a type of arachnid, along with spiders, ticks, mites, and scorpions but they belong to a group called harvestmen not spiders. Also they are usually called “daddy-long-legs” in field guides not “granddaddy-longlegs” and are more appropriately called harvestmen.

There are several differences between harvestmen and spiders. Spiders have two body parts, a cephalothorax (head and thorax fused together) and abdomen. Harvestmen have one body part similar to ticks and mites. The cephalothorax and abdomen are fused together so harvestmen lack the narrow “waist” that spiders have.

Harvestmen have two eyes. Nearly all spiders have eight. Harvestmen don’t have silk glands or spinnerets so they can’t spin a web like most spiders do. If you see a harvestmen in a web, it is soon to be a meal for a spider.

Harvestmen do not have venom glands or fangs, which all spiders have.

Spiders feed on live animals that they paralyze or kill with their venomous fangs.

Harvestmen eat decomposing plant and animal matter mostly, with an occasional slow-moving insect as part of their diet.

It is more correct to use the term venomous than poisonous to refer to spiders. Poison is ingested and venom is injected. In poisonous animals, toxic chemicals are stored in the body tissues and are used as a defense to prevent the animal from being eaten. Venom is usually used as a means to obtain prey, with the venomous animal injecting the toxic chemicals into the body of another animal. So spiders are venomous not poisonous. Predators can eat spiders, even brown recluse spiders, without ill effects.

So, even though “daddy-long-legs” aren’t the most “poisonous” arachnid in the world, they are still a very valuable part of the ecosystem. Maybe now more people can enjoy letting one crawl around on their hand without any fear of venomous fangs. If you really think about it, half of them are really “mommy-long-legs” anyway!


TWRA Commission Sets New License Fee Structure

For the first time in a decade, the Tennessee Fish and Wildlife Commission has approved a license fee structure adjustment for the Tennessee Wildlife Resources Agency. The increase was one of five rule amendments made by the TFWC at its January meeting, which concluded Friday at the Discovery Park of America in Union City. Tennessee hunting and fishing licenses expire on Feb. ... (click for more)

9th Annual Young Sportsman Quail Hunt Is March 7 In Knoxville

The Knoxville Quail Forever Chapter and Tennessee Wildlife Resources Agency will sponsor a young sportsman quail hunt on March 7, at the McGhee-Carson Unit of the Tellico Lake Wildlife Management Area. This hunt will be for young sportsmen ages 10 to 16 who have passed a Hunter Safety class.  The hunt will start at 8 a.m. and continue until 5 p.m.  Each young sportsman ... (click for more)

Deonta Banks, 23, Shot On Wilcox Boulevard Early Sunday Morning

Deonta Banks, 23, was shot early Sunday morning on Wilcox Boulevard. At approximately  3 a.m.  the Chattanooga Police Department responded to shots fired at 3232 Wilcox Boulevard.  Upon arrival, Chattanooga police located a single victim, Deonta Banks, suffering from a non-life threatening gunshot wound. He  was transported to a local hospital for treatment. ... (click for more)

Man Stabbed In Domestic Dispute On Sunrise Lane Saturday Morning

A man was stabbed Saturday morning on Sunrise Lane.   At approximately  11:41  a.m., the Chattanooga Police Department responded to a reported stabbing at 309 Sunrise Lane.  Officers located a 45-year-old black male suffering from a non-life threatening stab wound. The victim was transported to a local hospital for his injury.   The ... (click for more)

Obama Doesn't Want You To Save For College

Over the past few decades, federal aid for post-secondary education has decreased and transitioned largely from grants to guaranteed student loans.   At the same time, the cost of college has far exceeded the cost of inflation creating a situation in which college has become less affordable and causing students to pile up debt that is at an all-time high.   This debt ... (click for more)

Roy Exum: Value-Added Friendship

I need to take you through the back door on this one because it is a story that my friend Sandy Pohfal just sent me from Texas. Sandy happens to know Dr. John C. Dealey, a business-consultant wizard in Dallas whose advisory councils have made folks a lot of money. In turn, Dr. Dealey knows a guy he’ll only refer to as “Raymond.” Of all the guys I just mentioned, you need to focus ... (click for more)