Ingo Arndt / Close-up of mouthparts of Stag beetle (Lucanus cervus)

Paul Harcourt Davies / Great capricorn beetle (Cerambyx cerdo) close up of face showing mandibles and compound eyes. Italy, July.

James Dunbar / Leaf cutter ant (Atta sp.) Guadeloupe National Park, Guadeloupe, Leeward Islands.

Andy Sands / Heath potter wasp (Eumenes coarctatus) female using her mandibles to collect mud for nest building, Surrey, England, UK, August

Andy Sands / Heath potter wasp (Eumenes coarctatus) female using her mandibles to collect mud for nest building, Surrey, England, UK, August

Andy Sands / Heath potter wasp (Eumenes coarctatus) female using her mandibles to collect mud for nest building, Surrey, England, UK, August

Andy Sands / Heath potter wasp (Eumenes coarctatus) female using her mandibles to collect mud for nest building, Surrey, England, UK, August

MYN / Marc Pihet / Great capricorn beetle (Cerambyx cerdo) male, close-up, Maine-et-Loire, France, June, meetyourneighbours.net project

MYN / Marc Pihet / Great capricorn beetle (Cerambyx cerdo) male, close-up, Maine-et-Loire, France, June, meetyourneighbours.net project

Chien Lee / Cricket (Spizaphilus sp) male showing elongated mandibles, Andasibe, Madagascar

MYN / Corne van der Linden / Bulldog ant (Myrmecia vindex) near Perth, Western Australia. April.

Pascal Pittorino / Stag beetle (Lucanus cervus) male resting on a branch, Close up, Lozere, Cevennes, Languedoc Roussillon, France, July.