Armadillidium Vulgare is one of the most readily available isopods in the hobby that has numerous color morphs and localities. They range all over the color spectrum from plain Jane gray to several different bright and vibrant colors. The albinos however always pack that extra "WOW" factor and these little gems do not disappoint! A. Vulgare has two albino variations: T positive and T negative. But what does that even mean and what is the difference?!
As you might imagine it does get rather technical in the science and genetics categories. But we'll keep it surface level as possible here for the obvious fact you didn't come to a shopping site for a long boring college lecture (you're welcome). The "T" is an abbreviation for an enzyme called Tyrosinase which plays a key role in the development of melanin in every living creature. Melanin of course translating to pigmentation or color. It does this by acting as a crucial rate limiting step in this much deeper molecular process. Simply stated, more amounts of tyrosinase will produce more melanin resulting in darker pigmentation.
T Positive is a condition in which tyrosinase is present, but has reduced activity in comparison in how it works in a non albino specimen of the same species. T Negative means the tyrosinase enzyme is completely absent or non functional. How does this translate to isopods? The T Positive strain is expressed with a slightly semi translucent caramel base with ultra bright yellow flecking and splotching. They are absolutely gorgeous and have to be seen in person to truly and fully appreciate! The T negative variant is devoid of all pigments which makes them primarily white or cream colored. For clarification purposes, neither variant has red eyes! The red eye color associated with albinism is a result of ambient light shining through a non pigmented eye which illuminates the blood vessels thus making the eyes appear red. But isopods like most other invertebrates do NOT have blood. They have a colorless protein that delivers nutrients to their bodies in the same manner. Hence, T positive isopods will have dark colored eyes and T negative will have white eyes.
Armadillidium Vulgare is a very common isopod species and the one most people are referring to with the iconic term "pill bug" or "roly poly". They are native to Europe, most notably in the Mediterranean basin area but have established themselves nearly worldwide. They are a beginner friendly species being fairly flexible in their needs and tolerant to a variety of environmental conditions. A. Vulgare is a relatively outgoing isopod that can be seen exploring and moving about their enclosure at various times both day and night. As with most isopods, higher numbers means higher overall visibility.
A 6 quart gasket sealed storage bin or small glass aquarium is sufficient for a small starter culture of these beauties. Standard or bioactive enclosures can be enhanced with natural botanical items to simulate the isopods habitat in the wild. This helps them feel secure which in turn promotes their natural processes like eating and breeding. Average room temperature around the mid 70sF will suit them just fine. A. Vulgare prefers a temperate climate with good ventilation. Around one third to half of the enclosure should have damp (not wet) sphagnum moss with the remainder being a bit on the dry side, but not completely devoid of some moisture.They will often migrate between moist and dry areas at different times of the day to facilitate their biological processes as needed. A few pieces of cork bark strategically placed over some of the moist side will help retain the humidity levels and reduce the frequency of watering needed to maintain a proper moisture gradient.
Isopods are detritivores. Their primary diet in nature is leaf litter and decayed wood. Both of these should always be available in abundance. They will also happily consume any other decomposing organic plant or animal matter they come across. As such it is vital to supplement your isopods with other food sources on a semi regular basis. They enjoy food options like squash, cucumbers, carrots and other veggies along with commercial isopod powdered food like Repashy. They also need some occasional protein in their diets which can be things like freeze dried minnows, shrimp, fish pellets, dried insects and other protein based food sources. Be sure to feed these on the drier side as they can spoil quickly in humid environments and attract unwanted pests
Armadillidium Vulgare T Positive Albino is an easy species to keep and is fairly forgiving with the learning curves of new keepers or the occasional memory lapse. Their vivid colors combined with their partial daytime active disposition makes them an ideal candidate for a display isopod if that is your desire. A. Vulgare has many other color morphs and locales worth checking out if you like this species and want a variety of colors. If you're curious about the T Negative Albino strain mentioned in the "educational section", yes we have those too! See our store front for many other fascinating and unique isopods!
Quick Facts
- Origin: Mediterranean Europe
- Classification: Armadillidiidae > Armadillidium > A. Vulgare
- Characteristics: Semi translucent caramel base with ultra bright yellow flecking and splotching
- Size: 1/2" to 3/4" inch
- Activity level: Active both day and night
- Difficulty: Easy