The type of Phalaenopsis is often referred to as a Harlequin .. here is a site that shows a few different kinds - Click on the following link -
Harlequin Phalaenopsis
One can only speculate on it's official name and parents it has since it came with no name tag (No identification or what we affectionately refer to as a 'NOID')
That worm is a great sign .. it means your Phal is happy and healthy .. it has sent off an aerial root which it uses to absorb nutrients and moisture from the air ..
Congrats on your first orchid
Just to give you another source - here is the OB's Care Sheet for Phals -
http://www.orchidboard.com/Phalaenop...ure-Care-Sheet
BTW
Ekaterini
Glad you have joined us at the OB