Farooq Ahmad, K. 1998 Artificial infestation of Lepidosaphes ulmi (L.) (Diaspididae: Hemiptera): a new rearing technique of mussel scale on apple fruit.. Sarhad Journal of Agriculture 14: 5, 509-513.

Notes: Mussel scale Lepidosaphes ulmi was successfully reared on apple fruit (especially cv. Granny Smith) under insectary conditions. Greater numbers of gravid females were recorded from Granny Smith than MacIntosh. Most gravid females were collected near the calyx. A significant correlation was found between body measurements and the number of the eggs laid with respect to apple cultivar. Almost all insects collected from MacIntosh were devoid of eggs.