Pal Hermansen / Stag beetle (Lucanus cervus) walking along lichen covered branch. Oland, Sweden. June.

Ingo Arndt / Stag Beetle (Prosopocoilus occipitalis), native to Asia

Ingo Arndt / Stag Beetle (Hexarthrius buqueti), native to Java

Ingo Arndt / Stag Beetle (Prosopocoilus giraffa), native to Asia

Mike Read / Stag beetle (Lucanus cervus) male on rotting mossy covered log, Ringwood, Hampshire, England, UK, June.

Bruno D'Amicis / Stag beetle (Ceruchus chrysomelinus) silhouette in old-growth Beech (Fagus sylvatica) forest. UNESCO World Heritage Site. Abruzzo, Lazio and Molise National Park, Italy. July

Emanuele Biggi / Golden green stag beetle (Lamprima sp.), adult female with a shiny iridescent coloration, Italy. Captive.

Emanuele Biggi / Golden green stag beetle (Lamprima sp.), adult male with big mandibles and a shiny iridescent coloration, Italy. Captive.

Jiri Lochman / Golden stag beetle (Lamprima micardi) male, Western Australian endemic.

Jiri Lochman / Golden stag beetle (Lamprima micardi) male, Western Australian endemic.

MYN / Lily Kumpe / Golden stag beetle (Lamprima micardi) William Bay National Park, Western Australia. Meetyourneighbours.net project.

Kim Taylor / Lesser Stag Beetle (Dorcus parallelipipedus). Surrey, England, UK, Controlled conditions