Oncidium Hula Halau 'Volcano Queen' with weird looking leaves

[sweta]

Hi orchid pals,

One of my Oncidium Hula Halau 'Volcano Queen' leaf has developed wierd mottled pattern. Could it just be dehydration or something that I need to be worried about? If you notice carefully you can see some tiny bumps as well. I water it once in 5 days, humidity 40% and temperatures 65f at night and 70F daytime. Fertilize once in 2 weeks in winter and weekly during summer. Suggestions please?

[Ray]

My guess is watering and/or humidity issues.

[estación seca]

I agree. These shouldn't dry out.

[sweta]

Thanks Ray and Es for confirming.