Harmochirus insulanus

Males have a black prosoma covered with white scales dorsally, frontally and laterally. The clypeus is black with eyes surrounded by brown hairs. The opisthosoma is blackish brown with a posterior transverse band of white scales. The first pair of legs are black except for brown metatarsus and tarsus, with distinctive rows of black, scale-like setae on specific surfaces. The remaining legs have black femora and yellowish brown patellae, tibiae, metatarsi and tarsi. Females are generally paler in coloration. The male palp has a short, non-coiled embolus and a spherical tegulum with a membranous peak on the retrolateral surface. The female epigyne has a central structure with copulatory openings situated anteriorly and short, simple insemination ducts. H. insulanus is closely related to H. brachiatus but can be distinguished by the shape and position of the membranous tegular "peak" in males and the structure of the spermathecae in females.

H. insulanus is distributed across East Asia, having been recorded from China, Korea, Japan, and Vietnam. In Japan, it occurs on Honshu, Shikoku and Kyushu.