Figure 3. 

Distribution of Formica obscuripes worker head width in an over-wintering colony. Workers show a trend toward bimodality.

  
  Part of: Furness DC, Tan E, Longino JT (2025) Overwintering by the western thatch ant, Formica obscuripes (Hymenoptera, Formicidae). Contributions to Entomology 75(1): 229-233. https://doi.org/10.3897/contrib.entomol.75.e144856