Chris Mattison / Giraffe necked weevils (Trachelophorus giraffa) male. Endemic to Andasibe, Madagascar.

Alex Hyde / Giraffe necked weevil {Trachelophorus giraffa} male on leaf of host plant (Dichaetanthera cordifolia) tropical rainforest, Mantadia NP, Madagascar

Alex Hyde / Giraffe necked weevil {Trachelophorus giraffa} male photographed on white background, tropical rainforest, Andasibe-Mantadia National Park, Madagascar

Nick Garbutt / Male Giraffe-necked Weevil (Trachelophorus giraffa) Montane rainforest, Vohiparara, Ranomafana National Park, Madagascar.

Kim Taylor / Giraffe necked weevil (Trachelophorus giraffa) male, captive, Madagascar

Inaki Relanzon / Male (right) and female Giraffe necked weevils (Trachelophorus giraffa) on leaf, Ranomafana National Park, Madagascar

Pete Oxford / Giraffe Weevil (Trachelophorus giraffa) only the males have this extraordinary neck like a mechanical digger, females are more modestly proportioned, Analamazoatra Special Reserve or Perinet, Madagasc...

Alex Hyde / Giraffe Necked Weevil (Trachelophorus giraffa) male on leaf of Dichaetanthera cordifolia. Tropical rainforest, Mantadia National Park, Madagascar.

Alex Hyde / Giraffe Necked Weevil (Trachelophorus giraffa) male on leaf of Dichaetanthera cordifolia. Tropical rainforest, Mantadia National Park, Madagascar.

Nick Garbutt / Egg case made by a female Giraffe-necked weevil (Trachelophorus giraffa) from the leaf of favourite host tree (Dichaetanthera cordifolia), a single egg is laid inside, Ranomafana National Park, easter...

Nick Garbutt / Egg cases made by a female Giraffe-necked weevil (Trachelophorus giraffa) from the leaf of favourite host tree (Dichaetanthera cordifolia), a single egg is laid inside, Ranomafana National Park, easte...

Nick Garbutt / Egg of Giraffe-necked weevil (Trachelophorus giraffa) laid inside the leaf of favourite host tree (Dichaetanthera cordifolia), Ranomafana National Park, eastern Madagascar, November