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WHJS - Jumping Spider

Care Sheet

A big warm welcome from us at Wildheart! 


Firstly, can I just say congratulations on your new baby jumping spider!  

If you have purchased from me, thank you for choosing to purchase from us.


If you haven’t, and you’ve chosen to use this care sheet to bring up your newcomer from wherever you’ve purchased from - also big thank you as here at Wildheart we want nothing more than to support fellow jumping spider owners in bringing up their new little newcomers.


You are more than welcome to use and reproduce at your disposal. Wildheart has no issue with anyone using this care sheet outside of this website for their reference.


In fact, I see it as a compliment and above all, spreading knowledge in how to care for these spiders is paramount to their health (also your happiness as an owner knowing how to rear these beautiful spiders best). Enjoying these beautiful creatures as they grow, is ever so rewarding. 


Sizes & Where Confusion Can Set In 

There is so much confusion regarding size of spider (aka “Instar” or “Level” example- L1, L2 etc). 

Instar meaning? - Spiders must ‘moult’ due to the lack of flexibility that the spider has with its exoskeleton not being very flexible to grow as they get older.  

In between each ‘moult’ we call this Instar or Levels. 


Fun fact: Inside the egg sac they are white or clear, they don’t leave the egg sack until they’ve had their first moult (instar). When they do emerge from the sac, they are pure black.  

Now, some breeders argue they have two moults in the egg sac (from white to black then from black until they emerge). This can be very confusing: Are they L1 or L2s when they leave the sac?


Sticking to the less confusing due to not having an x-ray machine, I prefer to call them L1’s at this stage, and they are literally the size of a pin head, very tiny. From then on, the young moult regularly up to 10+ times before maturity. The difference in the sexes, can also play a part in maturity and amounts of moults, so age would be difficult to determine through size.


A lot of buyers will query to sellers having different opinions on moulting before and during egg sac hatching which is why it is so important providing this information and explaining to new owners, (whatever size jumper they have bought) why some are larger than others when they’ve made a purchase.


So, you’ve bought your first jumper (whatever instar it may be) how do you feel! Let's get onto the care of your little ones. 


Housing and feeding 

Make sure you create a safe environment for it to live in, it should be at least a cubic foot in size. Ventilation is paramount in keeping your jumper alive, so make sure they have adequate air flow.


I do have enclosures if you want on my website if you wish:


Please never put more than one spider in an enclosure, they will fight and try to eat each other. They will, and do in nature, hunt and eat other spiders.


Although Jumping spiders don’t spin webs, they do enjoy making little nests. By adding a small piece of dry tissue, we found it can help them in making a bed as the tissue folds provide a slightly darkened area to hide.  


 ⦁    Ensure all enclosures are kept out of direct sunlight or this can cause them to overheat. 

⦁    You do not need to feed your spider every day because your spider doesn’t need to eat every day like us.  

⦁    Spiders do not need much water, a very fine mist on the side of the cage is enough, every other day just be careful you don’t mist it too must as spiders can drown! 


Interacting with your spider  

Most spiders don’t like to be handled, but it doesn’t mean they won't. You can start off by watching the spider moving around its enclosure, sometimes they will follow your finger if you gently trace it along the sides of the enclosure. Take it out and watch it jump and climb around, and even dance for you, just be very careful it doesn’t fall from any height or lose it.


A feather/small brush/ coconut fibre brush are the types of “tools’ you can use when getting your spider to step in or on to things.   


Record Keeping 

A good idea is to keep a record book to keep track of how much he/she eats, when she changes colour or size for example: date of recent moult, or even when it likes to sleep. You may see some interesting patterns. It also is an ideal reference guide to see how they have grown since you have them and PICTURES are always MUST!  


Temperature, Lighting and Humidity 

Room temperature of between 60-70 degrees (21 – 25°c) is a good guideline, and they don’t really need any special lighting but a good indirect sun light or bright light during the day will keep them happy and healthy, young jumpers need good lighting and warmth to stimulate a good appetite.


If jumpers are not eating enough it can cause mis-moults because they may not have enough nutrients to see them through pre-moult. A mis-moult is incomplete moulting which can prove deadly in extreme cases due to the restricted mobility.


Humidity, I tend to use a soil based substrate (other spider owners use coir peat blocks) which you can mist as evaporation slowly happens it creates a stable humidity for a short time, this is especially important as spiders go through their moults. Jumping spiders prefer warm and dry so never saturate and soak their enclosure. Around 50% is fine but other species such as the Hyllus diardi require a higher humidity of around 80-90%.   


Food for Jumping Spiders  

Variety of Live food: 

⦁    Flightless drosophila 

⦁    Micro Crickets 

⦁    Micro mealworms 

⦁    Pupal 

⦁    Waxworms 

⦁    Green and blue bottle flies 

⦁    Maggots (yuck I know) 

⦁    House Flies, curly wing flies 

⦁    Wax worms 

⦁    Medium to Large Fruit flies 



They don’t need to eat every day, and every two to three days is plenty. Feed as per your spider’s preferences. If in doubt, check your environment parameters in the enclosure. 


For Future Reference: 

So now you have your Starter Care Sheet and of course if ever you need to contact me on my website- it’s on the footer of each page and you can use the site’s “CONTACT FORM”. 

I have a Facebook page if you search ‘Wildheart Jumping Spiders’ with some amazing members if needing advice. 


Finally, Wildheart Jumping Spiders wishes you all the success with your new companion. 

Sue x 

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