Fig. 2 in Evolution of Caste in Neotropical Swarm-Founding Wasps (Hymenoptera: Vespidae; Epiponini)

Fig. 2. Slight caste discrimination found in some epiponines based mostly on shape (when applicable). Individuals identified by dissection to be ''queens'' are represented as squares, while those identified as ''workers'' are solid dots. Separate regression lines are drawn for illustration only; see text for discussion.