Figure 5 from: Ganske A-S, Edgecombe GD, Akkari N (2018) The peristomatic structures as a source of systematic characters in the genus Lithobius Leach, 1814 (Myriapoda, Chilopoda). In: Stoev P, Edgecombe GD (Eds) Proceedings of the 17th International Congress of Myriapodology, Krabi, Thailand. ZooKeys 741: 49-75. https://doi.org/10.3897/zookeys.741.21706

Figure 5 Epipharyngeal structures of Lithobius. A Lithobius (Lithobius) pyrenaicus; one row of 'bottle-shaped' epidermal glandular shafts; laterally narrowing transverse bulge B–C Lithobius (Lithobius) validus B two rows of 'bottle-shaped' epidermal glandular shafts C pore of an epidermal glandular shaft (arrow) D Lithobius (Ezembius) electus; broad median spine field with several rows of branching bristles and a subequal width medially and laterally. bu – transverse bulge, gl – 'bottle-shaped' epidermal glandular shafts.