Cyclosa omonaga

C. omonaga has been recorded from China, Korea, Taiwan, and Japan.^[2] In Japan, the species has been found in multiple prefectures including Okayama, Mie, Wakayama, Nara, Shimane, Kagawa, Ehime, Fukuoka, Kumamoto, and Miyazaki.^[1]

Cyclosa omonaga is a medium-sized orb weaver with females measuring 4.65-8.30 mm in body length and males 3.76-4.75 mm.^[1] The carapace is pale brown and marginated with dark brown, often featuring a dark brown median line. The abdomen displays variable coloration patterns, typically silvery pale brown mottled with dark brown and silver, often with distinctive X-shaped or A-shaped silver markings.^[1]

Females possess three prominent protuberances at the posterior end of the abdomen, which distinguishes them from closely related species such as C. albisternis, which has additional paired dorsal tubercles.^[1] Males can be distinguished by the distinctive shape of the median apophysis and conductor of the palp.^[1]