Cubaris

Cubaris is a genus of woodlice in the family Armadillidae. There are more than 100 described species in the genus Cubaris.

Behavior and reproduction
Cubaris species have, on average, lower reproduction rates and longer lifespans than other genera of isopod. For example, Cubaris sp. "Rubber Duckies" are reported to have brood sizes of around 6 mancae.

Members of the genus Cubaris are well known for their ability to conglobate, or roll up into a ball, along with other genera such as Armadillidium.

Classification
Cubaris was coined in 1833, from the type species Cubaris murina. In 1935, the genus Nesodillo was considered a synonym of Cubaris. Only in 1998 was Nesodillo re-established as a separate genus. The two genera still cause confusion when it comes to identification and classification, and there are likely species in each genus that belong in the other. Cubaris pronyensis, Cubaris plastica, Cubaris incisa, and Cubaris pacifica are a few examples of Cubaris species which were placed in Nesodillo at some point.

In recent years Cubaris has become a wastebasket taxon, resulting in many species being placed in the genus even when they do not necessarily fit the original description. This has resulted in Cubaris becoming a vague genus that often strays from its correct description. Researchers have recommended a comprehensive revision of the genus.

As pets
Isopods that are currently classified as members of the Cubaris genus are often in fairly high demand within the pet isopod hobby. Many of the Cubaris species within the hobby are either undescribed or unidentified, and are referred to as "Cubaris sp.", though some have ended up being moved to other genera. One example of this is Nesodillo arcangelii, which was incorrectly identified as Cubaris sp.

The hobby has expanded quickly in recent years, owed largely to Cubaris sp. "Rubber Ducky". This undescribed Cubaris species garnered significant online attention, due to its face resembling that of a rubber ducky. A number of isopod keepers credit this species for getting them into the hobby.