Eyeshine
Guides
Arctosa littoralis
beach wolf spider, shoreline wolf spider
Arctosa littoralis, commonly known as the beach wolf spider or shoreline wolf spider, is a species of wolf spider in the family Lycosidae. It is a medium-sized spider (11-15 mm body length) with highly effective camouflage coloration adapted to sandy habitats. The species ranges throughout North and Central America, where it inhabits beaches, dunes, stream banks, and other sandy environments. It is primarily nocturnal and can be located at night by the distinctive blue-green eyeshine produced when light reflects from its tapetum lucidum.
Hogna osceola
Hogna osceola is a species of wolf spider in the family Lycosidae, first described by Gertsch and Wallace in 1937. It is a burrow-living wolf spider found in sandy habitats of western Texas and adjacent regions. Like other members of the genus Hogna, it exhibits the characteristic eye arrangement of wolf spiders with enlarged posterior median eyes that produce eyeshine visible at night when illuminated. The species appears to be associated with sand dune systems, where individuals construct silk-lined burrows.
Lycosidae
Wolf Spiders
Wolf spiders (family Lycosidae) are robust, agile hunters characterized by excellent eyesight and solitary behavior. The family is distinguished by a unique eye arrangement featuring two large, forward-facing posterior median eyes that produce distinctive reflective eyeshine. Most species are ground-dwelling and do not construct webs for prey capture, instead actively hunting or ambushing prey. Females carry egg sacs attached to their spinnerets and subsequently transport spiderlings on their backs. The family exhibits considerable ecological diversity, with species occupying habitats ranging from sandy beaches to forest floors and agricultural fields.