Figures 4 from: Sokolov I, Kavanaugh D (2014) The integripennis species group of Geocharidius Jeannel, 1963 (Carabidae, Bembidiini, Anillina) from Nuclear Central America: a taxonomic review with notes about biogeography and speciation. ZooKeys 443: 61-118. https://doi.org/10.3897/zookeys.443.7880

Figures 4 - SEM illustrations of structural features of mandibles of Geocharidius species. A–B Geocharidius zullinii: dorsal aspect of left and right mandibles, respectively C–D Geocharidius jalapensis: dorsal aspect of left and right mandibles, respectively E–F Geocharidius zullinii:–ventral aspect of left and right mandibles, respectively G–H Geocharidius jalapensis: ventral aspect of left and right mandibles, respectively (right mandible with Λ-shaped crack apically from retinacular ridge). Legend: art – anterior retinacular tooth; bemr – molar ridge, basal extension; it – incisor tooth; mr – molar ridge; mt – molar tooth; pog – posterior occlusal grove; prt – posterior retinacular tooth; rr – retinacular ridge; tr – terebral ridge; tt – terebral tooth; vg – ventral groove; vm – microtrichia. Scale = 0.05mm.