Male Coeliccia octogesima is more commonly spotted than female. To bump into a tandem pair of C. octogesima is something to be celebrated. I spotted a tandem pair of C. octogesima, and I waited for 20 minits to see if they would form a wheel pair before my eyes. However, they vanished before me, and I have to content myself with just tandem pair photos. The female C. octogesima has different thoracic marking than the male. Click here to see the clear thoracic marking of male C. ocotogesima.