A worldwide community photographing and learning about wildlife
Coridius cf. viduatus
Pentatomoidea, Dinidoridae, Coridius sp. and might be Coridius viduatus. Your plant looks also like some kind of melon or cucumber?
http://edmond.mpdl.mpg.de/imeji/item/X74...
http://www.everystockphoto.com/photo.php...