Multifocus light-micrographs and SEM-photographs of peristomatic structures in Lithobiidae. A Epipharynx of Lithobius (Lithobius) validus; posterior view (top is ventral) B Hypopharynx of Lithobius (Lithobius) carinatus; anterior view (top is dorsal) C Epipharynx of Eupolybothrus (Eupolybothrus) grossipes; posterior view (top is ventral) D Hypopharynx of Lithobius (Lithobius) forficatus; anterodorsal view (left ventrolateral bar broken). bdb – labral bristles on distal bar, blf – labral bristles on labral flap, bsc – ‘button-shaped’ sensilla, bu – single transverse bulge, bud – distal transverse bulge, bup – proximal transverse bulge, db – distal bar, gl – ‘bottle-shaped’ epidermal glandular shafts, hb – hypopharyngeal bar, hsp – hypopharyngeal spine field, lf – lateral flap, lsp – lateral spine field, lmc – paired lips forming median crest, mo – mouth opening, msc – median sensilla cluster, msp – median spine field, nsc – cluster of ‘nipple-shaped’ sensilla, pb – proximal bar, pp – pharyngeal plate, smc – spines flanking median crest, tp – tooth plate, tu – tuft of bristles, tub – tubercles on distal bar, vlb – ventrolateral bar. Scale bars: 200 µm.

  Part of: 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.