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Spiders

Arachnida (Arachnids), with approzimately 39,500 identified species, are commonly known as spiders. All spiders are both carnivorous and venomous, but only a very small percentage are potentially dangerous to humans. Ask and answer questions here about these eight legged fascinating wonders.

6,012 Questions

What do grey with white striped spider look like?

Jumping spiders, or salticids, are so named because they have a highly coordinated jumping ability with which they capture prey and traverse from plant to plant. Their sense of sight is extraordinary for invertebrates; they can see in color (DeVoe 1975), and the large front eyes focus on objects (Land 1972). Many are marked with contrasting colors or bands, especially the males who display this ornamentation while dancing before females to win acceptance for mating. Jumping spiders as adults may be as small as 1 mm in length or as large as 23 mm, but most are 5 to 10 mm. All jumping spiders are harmless to humans, although the larger species can give a locally painful bite if roughly handled. Two species of jumping spiders occurring in Florida. The gray wall jumper, Menemerus bivittatus (Dufour), and the pantropical jumper, Plexippus paykulli (Audouin), have been imported by man from the tropical Old World. Both are almost exclusively associated with man-made structures, usually buildings where they may be numerous around lights at night, catching the insects attracted to the lights. Both are medium- large jumping spiders, about 8 to 12 mm in length. Adults and immatures of both species are present all year, although most mating and reproduction begin in the fall and continue until spring. Both are found from Florida to Texas and south to Paraguay. Menemerus bivittatus also occurs in California, and both species are widely distributed in the Old World tropics. The occurrence of dense populations of these two species around human habitations makes them of considerable beneficial importance in the control of flies, mosquitoes, and other human pests. At the same time, since they do not build webs to capture prey, they do not create the cobwebs which so often annoy many housewives. === gray wall jumper, Menemerus bivittatus (Dufour) Abbreviated Synonymy === Salticus bivittatus Dufour, 1831
Attus melanognathus Lucas, 1839
Marpissa melanognathus, Simon, 1883
Menemerus bivittatus, Simon, 1901; Barnes, 1958
This species is dorsoventrally flattened. The males are 8 to 9 mm in length, while females are 8 to10 mm. In life, males appear to be longitudinally striped with alternating black and white, but in alcohol it is apparent that the dark abdominal stripes are reddish brown, and reddish-brown hairs also occur around the eyes. The carapace is mostly black with a white stripe on each side and one down the middle, the lateral stripes joining in front across the clypeus. A distinctive white inverted "V" mark occurs on the chellicerae. The female is gray dorsally, the carapace edged with a thin white stripe laterally and an orange clypeus; the semifoliar gray abdomen is edged with broad black stripes on each side which meet posteriorly. In alcohol, some reddish- brown hairs can be seen within the gray areas, especially on the abdomen. Immatures closely resemble the adult females, although sub-adult males may be distinguished by their swollen palpi. All free-living stages feed primarily on small Diptera which alight on buildings, although they are capable of capturing large crane flies twice their length, and larger, heavier muscoid flies. Females make a white eggsac in a crevice, somewhat flattened and about 1.5 cm in diameter, inside which they stay and guard 25 to 40 eggs which are contained inside a lenticular silken case about 6 mm in diameter. Spiderlings disperse about three weeks after the eggs are laid. male gray wall jumper female gay wall jumper === pantropical jumper, Plexippus paykulli (Audouin) Abbreviated Synonymy === Attus paykullii Audouin, in Savigny, 1825
Plexippus ligo, C.L. Koch, 1846
Plexippus paykulli, Pavesi, 1883
Thotmes paykulli, F.O.P.-Cambridge, 1901
This species is robust, with a high carapace. The males are 9 to11 mm in length, while the females are 9 to12 mm. Males are distinctly black and white striped, but the order of the dark and light stripes on the abdomen is the reverse of that found in M. bivittatus, i.e., P. paykulli has a light central stripe bordered by dark stripes, whereas M. bivittatus has a dark central stripe bordered by light stripes. A pair of white spots occurs near the posterior tip of the abdomen. The male's carapace is marked similarly to that of M. bivittatus, with a central white stripe and a white stripe on each side, but these lateral stripes, instead of meeting in front on the clypeus, curve up, around, and between the anterior eyes. The central white stripe also continues between the anterior eyes, so that the face presents three white stripes on a black background. The female is brown: the carapace is darker, especially the ocular area, with a dull orange median stripe on the thoracic slope. The abdomen has two short black stripes on the posterior half, each containing two white spots, and a tan stripe down the middle with some darker chevrons within. As in most jumping spiders, the immatures resemble the adult female, although sub-adult males have more resemblance to adult males both in color pattern and in their swollen palpi. Adults and immatures feed on a wide variety of arthropod prey, including flies, moths, smaller spiders, and flying ants (Edwards et al. 1974). Muma (1975) observed P. paykulli in citrus groves in Central Florida -- the only recent report of this species from plants rather than from man-made structures. The eggsac is made by the female in a sheltered area, between or under boards, under eaves, or in suitably-sized crevices. The eggsac is 2.5 to 3.5 cm in diameter, and the female stays inside to guard a lenticular silken case about 9 mm in diameter containing 35 to 60 eggs. Spiderlings emerge and disperse between three and four weeks after the eggs are laid. male pantropical jumper female pantropical jumper

Should you squash a white tail spider inside your house?

Well, it's not good to kill any type of animal. But they aren't endangered if that's what you mean.

How fast can a house spider run?

At least as fast as a human being and they will jump in your face like "facehuggers" did from aliens if they feel threatened!

Do black widow spiders have any markings on their backs?

Yes, black widows are very deadly and is probably the most venomous spider in the world. Despite their deadly venom, there aren't much deaths per year by these spiders as long as humans get immediate medical intention.

Is spider an insect?

No, insects typically have six legs and spiders have eight legs. And an insect had 3 body parts but spider has 2 body parts. so they are arachnids.

How do black widows find mates?

the male black widows wander in search of a female

What does the Himalayan jumping spider eat?

Mainly other smaller spiders, flying insects, bugs, and even a small meal worm

What kind of spider is one inch black with white diamond on it's back in North Carolina?

If the spider is solid black except for a white diamond on the abdomen, it is probably a jumping spider, Phiddipus audax. Their name means "audacious," probably because if they see a human watching them while they are out crawling around and hunting on a sunny wall they will not get scared and run away. They will, instead, start watching the human. They don't want to eat or attack the human. They just want to keep an eye out for a possible attack. (If you grab one it will most likely give you a defensive bite. Leave the spider alone so it can catch more flies and mosquitos.)

If you want to check Phiddipus audax out, just enter the name as a phrase in Google, and then you can look at all the images. Or go to Wikipedia and search for Phidippus audax.

What does a spider spin?

Spiders have spinnarets towards the rear of their underbellies. From these openings they pull out threads that solidify due to mechanical stretching of a liquid protein mass inside their bodies.

A week ago I watched an orb spinning spider build its spiral orb web and saw that she climbed to the next rung and with a pair of her legs pulled in the radial thread until she could just reach the previous tangent thread with her longest (front) leg then she fastened the thread from her rear to that radial and climbed to the nest radial spoke.

Is there a cure for a wandering spider bite?

considering camel spiders are not poisonous, yes, the cure is a band aid, some ointment, and time...

Red and black spiders?

There are a number of jumping spiders that are orange and black such as phidippus whitmani, phidippus cardinalis, and phidippus pulcherrimus. Others that are orange and black are castianeira amoena and misumenoides formosipes.

Why do spiders have 7 parts on their legs?

It's because spiders where made that way. Like humans for example, we are made with all are parts. Just for some people.

P.S.

Sorry for those people that don't have all their body parts. :)

How many spiders live in the Amazon rainforest?

Yes spider monkeys do live in the amazon. A few examples are the Woolly spider monkey and the Black spider monkey

What do you feed a daddy long legs spider?

The Daddy Long Legs is not a spider but a fly, more correctly known as a crane fly. Adult crane flies feed on nectar or they do not feed at all. Once they become adults, most crane fly species exist as adults only to mate and die.

Unless of course you are referring to the cellar spider which is also known as the daddy long legs spider which traps and eats insects like most other spiders.

How does a giant spider crab defend itself?

They protect themselves from predators by using their shell. They can use their pincers to fight, or they hide in their shells.

Do spiders like to sleep?

I don't know if they actually sleep in the way humans sleep, but I have a large orb-weaver that has taken up residence outside my front door. It has built a beautiful orb-shaped web, (the big round ones we usually think of, when we think of spider webs), which it sits in the middle of during the evening and night hours.

When it's really cold outside, or during the day, it retreats to the soffits (underside of the eaves) above the web, and just huddles there with its legs pulled in close to its body. I'm guessing it's going through some kind of rest period. It's obviously not doing the kind of thing lizards and snakes do, when they're only active during warmer times of day. It's very inactive until evening.

What insect looks like a spider but has only six legs?

If it has 6 legs it isn't a spider, it's an insect. All arachnids have 8 legs unless legs have been ripped off, in which case you'd still be able to see where the legs would be if they were still attached.

Even if you just miscounted, the description of a "small black spider" with no other details leads to thousands of answers. There is no way to tell what it is from the description.

What is a spider with brown legs and white butt?

I'm honestly not sure. But in order to check go to these Spider- ID sites-- and even if you do not find what you are looking for you will be able to ID any other in the future--

http://venomous-spiders.nanders.dk/spiderpictures.htm

http://bugguide.net/node/view/1954

http://www.arachnology.be/pages/Pictures.html

http://www.spideridentification.org/

What do house spiders like to eat?

to be left alone and ppl to understand them plus they like insects mice hiding places warmth humidty some like it dry and some like it a moist they like to buroww in the peat vermmiculate soil and like to be clean

How does a black widow spider adapt to its environment?

it adapts becauseCoyotes will eat almost anything. They hunt rabbits, rodents, fish, frogs, and even deer. They also happily dine on insects, snakes, fruit, grass, and carrion. Because they sometimes kill lambs, calves, or other livestock, as well as pets, many ranchers and farmers regard them as destructive pests.

In the fall and winter, they form packs for more effective hunting.

Read more: How_does_the_coyote_adapt_to_its_environment

When will pandas take over the world?

The future for the pandas is uncertain. There are less than 1,000 pandas left in the wild. Loss of habitat is the biggest treat to the giant panda. They also live in solitude, and come together only to mate. With fewer pandas in the wild it is also increasingly difficult for pandas to find partners to mate with. As a result pandas are not reproducing at a rate fast enough to ensure the survival of the species in the wild. Pandas living in captivity maybe the only pandas on our planet in the future.

Do cat spiders hibernate in winter?

Yes, many species of caterpillars do hibernate in the winter months. They emerge when the weather warms and most survive through the harsh climates.