Diatraea saccharalis
 

Hello

Another pest that attacks the orchids, Diatraea saccharalis, popularly known as orchid borer attacks the interior of the bulbs from one to another through the rhizome.
Difficult to identify before his attack has already caused great damage.
Your fight is done through a systemic and contact insecticides, as the adult of this insect pest, a small white moth, lays its eggs on the substrate.
He prefers very wet substrates such as the old fern, often the larva is found among the roots, but goes to the inside of the bulbs for food.

Sorry my English language

To see more photos click on the image below.
http://farm5.static.flickr.com/4005/...e986cb8b_o.jpg