Paraphidippus fartilis are a hardy, charismatic species of jumping spider native to the western United States. They are known for their fuzzy appearance, bold jumping behavior, and alert personalities. While slightly less “social” than Regals, they are still active hunters and make an excellent display species for both beginners and experienced keepers.
Housing
Enclosure Size:
4"x4"x6" or larger for juveniles; 6"x6"x9" or larger for adults.
Ventilation:
Cross-ventilation is very important. Good airflow helps prevent excess moisture and mold.
Climbing & Webbing:
Provide vertical décor such as cork bark, twigs, or textured backgrounds to encourage climbing and hammock building.
Hides:
They spin their own silk retreats but benefit from anchor points like cork flats, leaves, or fake foliage.
Temperature & Humidity
Temperature:
Ideal range is 70–80°F.
Humidity:
Maintain 30–50%. This species prefers slightly drier conditions compared to tropical jumpers. Allow the enclosure to fully dry between mistings.
Water:
Light side misting 2–3 times per week provides drinking droplets.
Lighting
No special lighting is required.
Ambient room light or a low-heat LED helps establish a normal day/night cycle.
Avoid heat lamps or intense lighting that may over-dry the enclosure.
Diet
Spiderlings and small juveniles: fruit flies (D. melanogaster or D. hydei)
Larger juveniles and adults: small crickets, blue bottle flies, house flies, mealworms, or waxworms
Feed 2–4 times per week, removing uneaten prey within 24 hours.
Offering a variety of feeders supports healthy growth and natural hunting behavior.
Water & Hydration
Jumping spiders drink from water droplets rather than bowls.
Lightly mist one side of the enclosure—never spray the spider directly.
Molting
During molts, they will seal themselves inside a silk hammock.
Do not disturb or feed during this time.
Wait 2–5 days post-molt before offering food to allow the exoskeleton to harden.
Temperament
Paraphidippus fartilis are alert and fast, with strong jumping ability.
They may be more skittish than Regals but are not aggressive.
Handling should be minimal and always done over a soft surface.
Lifespan
Females typically live 1–2 years.
Males usually have shorter lifespans.
Cleaning
Spot-clean waste and uneaten prey as needed.
Full enclosure cleanings are rarely necessary—every few months is sufficient.