Figure 4 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 4 Epipharyngeal structures of Lithobius. A Lithobius (Lithobius) macilentus; transverse bulge with a smooth surface; two rows of epidermal glandular shafts at the lateral border of the transverse bulge B Lithobius (Lithobius) lucifugus; distal transverse bulge with longitudinal striae C Lithobius (Lithobius) lucifugus; proximal transverse bulge with longitudinal striae and pores (arrow) D Lithobius (Lithobius) fagei; longitudinal striae on the lateral part of the transverse bulge (arrow); continuous branching bristle band from the distal bar to the lateral flap at the margin of the transverse bulge E Lithobius (Lithobius) cyrtopus; distinct break of branching bristle band from the distal bar to the lateral flap F Lithobius (Monotarsobius) crassipes; distinct break of branching bristle band from the distal bar to the lateral flap. bu – transverse bulge, gl – 'bottle-shaped' epidermal glandular shafts.