Figure 1
From: Morphology of the tentorium in the ant genus Lasius Fabricius (Hymenoptera: Formicidae)
General structure of the tentorium in the genus Lasius. ata, anterior tentorial arm; atp, anterior tentorial pit; be, buttress-like extension; ct, corpotendon; dta, dorsal tentorial arm; ep, exterior plate; ip, interior plate; of, occipital foramen; pta, posterior tentorial arm; ptp, posterior tentorial pit; tb, tentorial bridge.
