Anasaitis canosa

Anasaitis canosa

''Anasaitis canosa'', previously of the genus ''Corythalia'', is a small jumping spider that can typically be found atop leaf-litter or man-made structures such as fences and exterior walls. This species is more commonly known as the twin-flagged jumping spider due to the two pennant shaped markings on the dorsal side of the cephalothorax. Typical of the genus ''Anasaitis'', this species has iridescent setae which may appear white, green or pink which create the "flags" as well as patches on the male pedipalps used in courtship and intraspecific signaling. This species is roughly one centimeter in length and has a lifespan up to two years. ''A. canosa'' ranges from Mexico to South Carolina along the Gulf of Mexico.
Twinflagged Jumping Spider (Anasaitis canosa) In a dense mixed forest. This tiny jumping spider actually caught a tick (right in front of my eyes) and was eating it! I was so mad that I didn't get any good shots before it hopped away! Anasaitis canosa,Geotagged,Spring,United States

Behavior

This species exhibits an instinctive and unique hunting method for catching ants. The spider will align its abdomen and thorax so that it directly faces the ant, and then strafe in an arc until the ant is directly facing the spider. Once aligned, the spider will leap and puncture the ant on the dorsal side of the head or thorax. In this position, the dangerous mandibles and stinger are incapable of inflicting damage. When stalking prey such as flies or beetles, this salticid is much more direct in its approach and will pounce and puncture from any direction, presumably because these prey pose less risk to the spider. As is common with Salticids, this species uses its silk as a tether whenever leaping. In the event of a miss, they will climb up this silk line back to the previous perch.
Twinflagged Jumping Spider (Anasaitis canosa) On leaf litter at a hickory-oak forest edge. 

Wow, almost exactly a year ago I saw one around the same spot! Hopefully this one is tick-hunting as well! Anasaitis canosa,Geotagged,Spring,United States

Reproduction

Females lay eggs inside a silk hide or nest and will guard them until they hatch. Clutch size is around fifteen spiderlings per reproductive event. Males use their anterior most pair of legs in a mating display. Initially they will hold these darkened appendages laterally while maneuvering to face the female directly. When the male is within reach, he use these legs to touch the female on her dorsal side. For a video of this behavior, see below.
Twin-flagged Jumping Spider Found this little guy hopping around on the table outside.  Anasaitis canosa,Jumping Spider

Food

This species exhibits an instinctive and unique hunting method for catching ants. The spider will align its abdomen and thorax so that it directly faces the ant, and then strafe in an arc until the ant is directly facing the spider. Once aligned, the spider will leap and puncture the ant on the dorsal side of the head or thorax. In this position, the dangerous mandibles and stinger are incapable of inflicting damage. When stalking prey such as flies or beetles, this salticid is much more direct in its approach and will pounce and puncture from any direction, presumably because these prey pose less risk to the spider. As is common with Salticids, this species uses its silk as a tether whenever leaping. In the event of a miss, they will climb up this silk line back to the previous perch.

References:

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Taxonomy
KingdomAnimalia
DivisionArthropoda
ClassArachnida
OrderAraneae
FamilySalticidae
GenusAnasaitis
SpeciesA. canosa