About Hasarius adansoni (Audouin, 1826)
This species, Hasarius adansoni, shows distinct size and color differences between adult females and males. Females reach a maximum body length of 8 millimeters, while males grow up to 6 millimeters. Males are mostly black, with a red mask-like marking, and partially white pedipalps. A white crescent marking sits on the rear portion of the abdomen, and a second white crescent appears on the front of the opisthosoma. Two small white dots are located on the posterior back, with two even smaller dots closer to the tip of the abdomen. All of these white markings, particularly those on the pedipalps, have a nacre-like iridescence. Females are dark brown overall, with a lighter, somewhat reddish-brown opisthosoma. Hasarius adansoni occurs naturally in warm climates across the globe, with recorded locations including Malta, India, Japan, Brazil, Taiwan, Tanzania, and Australia. It has also been introduced to greenhouses and similar enclosed indoor spaces worldwide, such as in multiple German zoos. Within China, this species is distributed across the provinces of Gansu, Guangxi, Guangdong, and Yunnan.
