mandible
Ptomaphagus varicornis larva (Plön) mandibles.png

Taken from the Leiden University BSc report "Characteristics for identification of larval Cholevinae (Coleoptera: Leiodidae)" by Susanne Pinto.
Ptomaphagus subvillosus larva (Plön) mandibles.png

Taken from the Leiden University BSc report "Characteristics for identification of larval Cholevinae (Coleoptera: Leiodidae)" by Susanne Pinto.
Ptomaphagus sericatus larva (Schiedam) mandibles.png

Taken from the Leiden University BSc report "Characteristics for identification of larval Cholevinae (Coleoptera: Leiodidae)" by Susanne Pinto.
Ptomaphagus medius larva (Berlin) mandibles.png

Taken from the Leiden University BSc report "Characteristics for identification of larval Cholevinae (Coleoptera: Leiodidae)" by Susanne Pinto.
Ptomaphagus larval mandible.png

Larval mandible 1st instar larva of unidentified Ptomaphagus species from Büttekerberg (?), drawn by Peter Zwick
Catops nigricans larval mandibles (L1 and L2).png

Two skteches by Peter Zwick (unpublished) of the mandible of 1st and 2nd instar larvae of Catops nigricans from a culture originally from Grunewald (near Berlin, Germany)