Flexible-legged Spider

H. higenaga exhibits the typical characteristics of nursery web spiders, with elongated legs and a streamlined body form. The species shows sexual dimorphism, with females generally larger than males. Based on the original description, females have a body length of approximately 9.2 mm with a cephalothorax measuring 4.30 × 3.70 mm and abdomen 5.20 × 2.40 mm. Males are smaller, with a body length of about 10.4 mm and cephalothorax measuring 4.80 × 4.20 mm. The species displays brownish coloration with distinctive markings. The cephalothorax shows a yellowish-brown color with darker lateral bands, while the abdomen exhibits complex patterns including cardiac markings and lateral stripes. Like other members of its genus, H. higenaga possesses the characteristic three claws on each tarsus and has well-developed chelicerae with three teeth on both the anterior and posterior margins.

H. higenaga is found across East Asia, with confirmed records from China, Taiwan, and Japan. In China, it has been documented from multiple provinces including Yunnan.

As a nursery web spider, females of H. higenaga exhibit characteristic maternal care behavior. They carry their egg sacs in their chelicerae until the eggs are ready to hatch, at which point they construct a protective nursery web. The female guards this nursery web until the spiderlings are ready to disperse after their first molt. The species is an active hunter that does not construct prey-capture webs, instead relying on ambush tactics to capture small arthropod prey.

The specific name higenaga derives from Japanese ヒゲナガ, where hige (髭) means "mustache" and naga (長) means "long".