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The genus has been described as primitive because of their pervasive use of webs and the secretory organs on the femora of males. These characteristics were lost by advanced salticids. The genus are also almost wholly dependent on their vision.The primary mating season for the spider C. algerina is May. Juveniles emerge in July, grow to about half the adult size by winter, and then grow to adult size in the spring of the following year.The genus is commonly found on very rocky ground under rocks, or less often walking around on the ground or on the tops of rocks.