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The posterior lateral (PLE) and anterior lateral eyes (ALE) provide the spider with a 360-degree survey of its surroundings. Field of vision of the ALE overlap in front of the spider. Each anterior medial eye (AME) consists of a long tube that can be moved independently to scan the area in front of the spider with high resolution.
The jumping spiders, unlike the other families, have faces that are roughly rectangular surfaces perpendicular to their direction of motion. In effect this means that their forward-looking, anterior eyes are on "flat faces", as shown in the photographs. Their eye pattern is the clearest single identifying characteristic.
Eye pattern of jumping spiders on "squared-off" cephalothorax. Jumping spiders have eight eyes, the two large ones in the centre-and-front position (the anterior-median eyes, also called "principal eyes" [6]: 51 ) providing acute vision and housed in tubes in the head. The other six are secondary eyes, positioned along the sides of the carapace ...
Hogna wolf spider (family Lycosidae) showing the enlarged posterior median eyes typical of the family. The eyes of spiders vary significantly in their structure, arrangement, and function. They usually have eight, each being a simple eye with a single lens rather than multiple units as in the compound eyes of insects. The specific arrangement ...
Lohit Y.T, a specialist in rivers and wetlands from WWF India reached Nandi Hills near Bengaluru late one evening and trekked up to a popular sunset spot where he had spotted an tiny spider which seemed different as he had never seen any spider before with the black and white pattern and distinctly shorter jump pattern seen in Tenkana arkavathi from Nandi Hills.
The Most Common House Spiders to Know CBCK-Christine - Getty Images. ... Jumping spider. What they look like: There are more than 300 species of these, and they all look a little different ...
Chalcoscirtus lepidus is a small spider. [9] The male has a brown carapace that is typically 1.06 mm (0.04 in) long and 0.69 mm (0.03 in) wide. It has a pattern of black veins and has a sparse covering of light elongated scales. The eye field is dark brown with the area around the eyes is black. The spider's face, clypeus, is yellow-brown and ...
Lyssomanes is a spider genus of the family Salticidae (jumping spiders), ranging from South and Central America, up to the southern United States. [1]There have been described 94 extant and two fossil species [2] [3] from the Neotropical Region.