What are the details of the spider known as Philaeus chrysops?

Question

I discovered one of these spiders and need any information that anyone has due to lack of info on the net.

Answer 1

It is a types of jumping spider. Normal body length is 7 to 12 mm, but 5 mm small males do occur. Unusual for spiders, the males are often bigger. The sexes differ extremely: males are very colorful with a glaringly red opisthosoma (chrysops means "golden eye" in Greek). The males have a dark brown cephalothorax with two broad longitudinal white stripes behind the rear eyes. The abdomen is bright orange-red on the back and the sides, with a longitudinal black stripe in the center and black shoulders. The long, slender legs are dark with the patellae and most of the tibiae of the first two pairs bright orange-red. The cephalothorax of the female is similar to the male, but with much smaller white stripes. The back of her abdomen is largely covered with a very broad brown band with two narrow longitudinal white stripes and a few white marks near the sides. The remainder of the abdomen and the sides are orange, the legs light brown with dark brown rings. The spider prefers open and warm areas.

Answer 2

It's a type of Jumping Spider.

It won't hurt you..

Jumping spider

From Wikipedia, the free encyclopedia

A tiny spider of genus Sandalodes, approx 10 mm in size

Scientific classification

Kingdom: Animalia



Phylum: Arthropoda



Class: Arachnida



Order: Araneae



Section: Entelegynae



Superfamily: Salticoidea



Family: Salticidae

Blackwall, 1841



Diversity

553 genera, 5025 species



Subfamilies

Aelurillinae

Agoriinae

Amycinae

Ballinae

Dendryphantinae

Euophryinae

Hasariinae

Heliophaninae

Hisponinae

Lyssomaninae

Marpissinae

Myrmarachninae

Pelleninae

Plexippinae

Salticinae

Spartaeinae

Synagelinae

Synemosyninae

See List of Salticidae genera



The jumping spider family (Salticidae) contains more than 500 described genera and over 5,000 species, making it the largest family of spiders with about 13% of all species (Peng et al., 2002). Jumping spiders have good vision and use it for hunting and navigating. They are capable of jumping from place to place, secured by a silk tether. Both their book lungs and the tracheal system are well-developed, as they depend on both systems (bimodal breathing).



Habitat

Jumping spiders live in a variety of habitats. Tropical forests harbor the most species, but they are also found in temperate forests, scrub lands, deserts, the intertidal zone (in Malaysia), even mountains one species is reported to have been the spider collected at the highest elevation, on the slopes of Mt. Everest (Wanless, 1975). Certain species of Salticidae are quite common in Europe, such as the Zebra Jumping Spider Salticus scenicus, which is commonly found resting on sun-warmed stone or brick walls.

[edit] Appearance

Jumping spiders are generally recognized by their eye pattern. They typically have eight eyes arranged in two or three rows. The front, and most distinctive row is enlarged and forward facing to enable stereoscopic vision. The others are situated back on the cephalothorax.

Colours and patterns vary widely. Several species of jumping spiders appear to mimic ants, beetles, or pseudoscorpions. Others may appear to be parts of grass stems, bumps on twigs, bark, part of a rock or even part of a sand surface.

[edit] Behavior

Jumping spiders are generally diurnal, active hunters. Their well developed internal hydraulic system extends their limbs by altering the pressure of body fluid (blood) within them. This enables the spiders to jump without having large muscular legs like a grasshopper. The jumping spider can therefore jump 20 to 60 or even 80 times the length of their body. When a jumping spider is moving from place to place, and especially just before it jumps, it tethers a filament of silk to whatever it is standing on. Should it fall for one reason or another, it climbs back up the silk tether.

Unlike almost all other spiders, they can quite easily climb on glass. Minute hairs and claws on their feet enable them to grip imperfections in the glass.

Jumping spiders also use their silk to weave small tent-like dwellings where females can protect their eggs, and which also serve as a shelter while moulting.

Jumping spiders are known for their curiosity. If approached by a human hand, instead of scuttling away to safety as most spiders do, the jumping spider will usually leap and turn to face the hand. Further approach may result in the spider jumping backwards while still eyeing the hand. The tiny creature will even raise its forelimbs and "hold its ground." Because of this contrast to other arachnids, the jumping spider is regarded as inquisitive as it is seemingly interested in whatever approaches it.[citation needed]

[edit] Vision



The four front eyes of a jumping spider (there are eight eyes total).Jumping spiders have very good vision centered in their anterior median eyes (AME). Their eyes are able to create a focused image on the retina, which has up to four layers of receptor cells in it (Harland & Jackson, 2000). Physiological experiments have shown that they may have up to four different kinds of receptor cells, with different absorption spectra, giving them the possibility of up to tetrachromatic color vision, with sensitivity extending into the ultra-violet range. It seems that all salticids, regardless of whether they have two, three or four kinds of color receptors, are highly sensitive to UV light (Peaslee & Wilson, 1989). Some species (for example, Cosmophasis umbratica) are highly dimorphic in the UV spectrum, suggesting a role in sexual signaling (Lim & Li, 2005). Color discrimination has been demonstrated in behavioral experiments.

The principal eyes have high resolution (11 min. visual angle) [1], but the field of vision is narrow, from 2-5 degrees.

Because the retina is the darkest part of the eye and it moves around, one can sometimes look into the eye of a jumping spider and see it changing color. When it is darkest, you are looking into its retina and the spider is looking straight at you.[2]

[edit] Diet

[edit] Hunting

Jumping spiders capture their prey by jumping on it from several inches away, and they may jump from twig to twig or leaf to leaf. They can jump many times their body length. They can carry out complex maneuvers such as detours around obstacles in order to reach their prey. Their eyesight is much better than the other spiders and most, if not all, insects. Most other spiders will only eat prey that they have captured live because they are unable to see dead prey (some long-legged sac spiders and anyphaenid sac spiders are exceptions as they recognize insect eggs as food) but jumping spiders will eat flies that have been killed for them. One jumping spider (Evarcha culicivora) is even known to only capture mosquitos full of blood, using their eyesight and smell.

[edit] Nectar and pollen

Even if there are no spiders that are pure herbivores, there are some jumping spiders which include nectar and pollen in their diet (Jackson et al., 2001). So far none are known to feed on seeds. When insects land on plants such as the partridge pea, which offers the spiders nectar through their extrafloral nectaries, the jumping spiders help protect the plant in return by killing and eating insects that might damage the plant.

[edit] Gliding

At least one species of jumping spiders, known as the Gliding Spider (Maratus volans) from Australia, has an abdomen with two wing-like flaps that can be tucked underneath it when not in use. When the spider is leaping, it can use its flaps to extend the jump and glide short distances through the air.

[edit] Venom

Some jumping spiders may bite to protect themselves if disturbed. However, jumping spiders usually escape and hide, and will only bite if provoked and cornered. While the bite of a larger jumping spider can be painful, only a few species produce any other effects. Almost all spiders (except hackled orb-weavers) have venom, but the venom of most spiders is no worse than the venom of a bee. For more information of envenomation see the Spider bite article.

[edit] Reproduction

Jumping spiders use their vision in complex visual courtship displays. Males are often quite different in appearance than females and may have plumose hairs, colored or metallic hairs, front leg fringes, structures on other legs and other, often bizarre, modifications. These are used in visual courtship in which the colored or metallic parts of the body are displayed and complex sideling, vibrational or zigzag movements are performed in a courtship "dance." A 2008 study of Phintella vittatain in Current Biology suggested that female spiders reacted to the male reflecting ultraviolet B light before mating, a finding that challenges the previously held assumption that animals did not register ultraviolet B light.[1] In recent years it has been discovered that many jumping spiders may have auditory signals as well, with amplified sounds produced by the males sounding like buzzes or drum rolls.[citation needed]