Portia labiata

The *Portia labiata* is a medium-sized jumping spider belonging to the family Salticidae.

These spiders inhabit diverse regions, including India, Sri Lanka, southern China, Myanmar, Malaysia, Singapore, Java, Sumatra, and the Philippines. They are widely recognized for their remarkable cognitive abilities and versatile hunting strategies. Because their tactics are as adaptable as those of a lion, members of the genus *Portia* are often called "eight-legged cats." This intelligence allows them to navigate complex environments and successfully hunt a variety of prey.

Vision is the primary tool for survival in *P. labiata*.

The spider possesses eight eyes located on its cephalothorax. The two large anterior-median eyes, or principal eyes, provide acute vision. During the day, these eyes are more acute than a cat's and ten times more acute than a dragonfly's. These eyes can focus on objects from 2 centimeters to 75 centimeters away. The other six secondary eyes act mainly as movement detectors. While the spider has a small visual field, its vision is sharp enough to identify scenery features up to 85 times its own body length.

The physical appearance of *P. labiata* varies between the sexes. Females typically measure 7 to 10 millimeters in length. Their carapaces are orange-brown with sooty streaks near the eyes and sometimes show a violet or green sheen. The female abdomen is mottled brown and black with gold, white, and black hairs. Males are smaller, measuring 5 to 7.5 millimeters long. Their carapaces are also orange-brown but feature a white wedge-shaped stripe and white bands above the legs. Both sexes have dark brown legs with light markings on the femora.

Hunting in *P. labiata* involves both instinct and improvisation. Most jumping spiders use a standard method: sighting prey, stalking, attaching a silk safety line, and jumping. However, *Portia* species can use trial and error to solve new problems. They can improvise tactics against unfamiliar prey and remember these successful approaches. Females also build funnel-shaped capture webs. These webs are about 4,000 cubic centimeters in volume and can be attached to the webs of other spiders. This allows the female to hunt web-based spiders directly.

Research shows that local environments influence specific hunting behaviors. For example, populations in the Philippines show different tactics based on their location. Spiders from Los Baños rely more heavily on trial and error to vibrate a prey's web. This vibration can lure or distract the prey. In areas where the web-building spider *Scytodes pallida* is common, *P. labiata* instinctively detours around the back of the predator. They use deception by plucking the web to make the prey believe a threat is in front of it. Spiders in areas without *S. pallida* do not use this specific combination of detouring and deception.

Social interactions among *P. labiata* are often intense and competitive. Adults use "propulsive displays" to threaten rivals of the same sex. Females are particularly aggressive toward other females. They often try to invade and take over each other's webs, which can lead to cannibalism. To minimize these dangerous confrontations, females use silk draglines as territory marks. They can even recognize the draglines of powerful fighters. Females tend to avoid the territories of the most powerful fighters and prefer to move near less powerful ones.

Beyond sight, *P. labiata* relies on a sophisticated sensory system. They use modified setae, or bristles, to sense smell, taste, touch, and vibration. They do not have antennae like insects. Instead, they use vibrations to hunt in total darkness and to find mates. They also use olfactory signals, or smells, to communicate. Mature females emit these signals to reduce the risk of other spiders competing for the same prey. These complex sensory and cognitive systems make *P. labiata* a highly specialized predator in the spider world.