Complex sentence: The majority of the "Loriculus" species occur on islands.Morever since "Loriculus" is spread across both sides of the Wallace Line it can be considered more Australasian than Asian.
Split into simpler sentences: The majority of the "Loriculus" species occur on islands. Moreover since "Loriculus" is spread across both sides of the Wallace Line it can be considered more Australasian than Asian.