Female bursa copulatrix of the Thereus oppia species group. Dorsal (top) and lateral view of the ductus copulatrix. Posterior of insect to the right. 19 T. orasus 20 T. lomalarga 21 T. oppia 22 T. brocki. Scale bars: 0.5 mm.

  Part of: Robbins RK, Heredia AD, Busby RC (2015) Male secondary sexual structures and the systematics of the Thereus oppia species group (Lepidoptera, Lycaenidae, Eumaeini). ZooKeys 520: 109-130. https://doi.org/10.3897/zookeys.520.10134