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!


Fishing Report From The TRWA

Here is the fishing report from the TWRA: Chickamauga Reservoir:  Reservoir Conditions: Summer normal elevation: 682.0 feet. Winter normal elevation: 676.0 feet. Current elevation: 681.0 feet. The water surface temperature is 62 degrees. Largemouth Bass: Grass mats and grass edges along large flats seem to be better than other areas. Frogs, buzzbaits, plastic ... (click for more)

2015-16 Sport Fish Regulations To Be Set During October Commission Meeting

The Tennessee Fish and Wildlife Commission will establish the 2015-16 sport fish regulations during its October meeting. The meeting will be held in Greeneville on Wednesday-Thursday, at the General Morgan Inn.  The Tennessee Wildlife Resources Agency Fisheries Division presented changes in the sport fish proclamation during a preview at the August TFWC meeting. The proposals ... (click for more)

2 People Shot Saturday Night On Carousel Road

Two people were shot Saturday evening on Carousel Road. At  9:11 p.m. , Chattanooga Police responded to 1406 Carousel Road on a call of a person shot. One victim on the scene suffered minor injuries.  Another victim was transported by personal vehicle to a local hospital. The s econd victim suffered non-life-threatening injuries.  The suspect ... (click for more)

Teenager Killed In ATV Accident Thursday Night

Damon Lee Jones, 15, was killed Thursday night in an ATV accident in Walker County. It was reported he was riding with a 17-year old, when they tried to enter a church parking lot, but ran into a cable barrier. The accident happened on Dunwoody Road in LaFayette. The other rider, identified as Timothy J. Wallin, was not injured.   (click for more)

Tom Dugan Was A Good Man

Tom was my boss for most of my 36 years at Carta.  At the ceremony where I was awarded my 30-year service award, Tom said, "Don disagrees with 85% of my decisions, but I wish I had 80 more employees just like him." This kind of indicates our relationship. When I asked him to help with my plans for a reunion for the group of Veterans that I served with in Vietnam, he quickly ... (click for more)

Roy Exum: More Sunday Funnies

On the last Sunday before Daylight Savings Time disappears next week, let’s go to my jokes back for some grins and giggles: * * * An old gentleman was on the operating table awaiting surgery and he insisted that his son-in-law, a renowned surgeon, perform the operation.  As he was about to get the anesthesia, he asked to speak to his son-in-law. “Yes, Dad, what is ... (click for more)