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Deinopis, also known as net-casting spiders, gladiator spiders and ogre-faced spiders, [2] is a genus of net-casting spiders that was first described by W. S. MacLeay in 1839. [3] Its distribution is widely tropical and subtropical. They catch their prey using a specially spun "net".
The posterior median eyes have excellent night vision, allowing them to cast nets accurately in low-light conditions. These eyes are larger than the others, and sometimes makes these spiders appear to only have two eyes. Ogre-faced spiders are the best known genus in this family. The name refers to the perceived physical similarity to the ...
When prey approaches the spider, it lunges forward and captures the insect in its net. In order to capture prey flying above it the spider uses a backward striking motion. When prey is outside its field of vision this spider appears to use a sensory organ located on its front legs to sense to prey. This sensory organ is known as the metatarsal ...
Researchers captured the spider and took it to a research lab. They found three similar-looking spiders in archive collections and, taking a closer look, realized they’d discovered a new species ...
The main pair of eyes in jumping spiders even sees in color. [9] Net-casting spiders of genus Deinopis have their posterior median eyes enlarged into large forward-facing compound lenses. These eyes have a wide field of view and are able to gather available light more efficiently than the eyes of cats and owls.
Deinopis longipes is a species of net-casting spider (family Deinopidae). It is found throughout Central America. This spider has a very slim, elongated body around 16 mm in length. As with other members of the family, it hunts at night, constructing a silken net which it uses to snare passing prey.
[20] [21] This anti-predator strategy is also seen in some spider systems, such as Deinopis spinosa, which have evolved higher perceptual capabilities to perceive avian predator cues. [22] In addition, there is evidence that predator species will use auditory cues to detect prey items as well as parasitoid wasps that can detect host cricket ...
Basic arrangement of spider eyes, viewed from above. Most spiders have eight eyes, which tend to be arranged into two rows of four eyes on the head region. The eyes can be categorised by their location and are divided into the anterior median eyes (AME), anterior lateral eyes (ALE), posterior median eyes (PME), and posterior lateral eyes (PLE).