Little spikes on the center vein of leaf.

Question

I noticed that there are spike looking things with white tips all down the main vein of one of the leaves. None of the others have it only the one. I have never seen this before. Is this normal?

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Answer 1

The closest thing I can find to this is mealybugs. The photo below shows some hairy projections above the group. If not that, it does seem like it is an insect problem. Try an insecticidal soap or Neem oil.
https://www.gardeningknowhow.com/plant-problems/pests/insects/mealybugs-control.htm
https://www.gardeningknowhow.com/houseplants/hpgen/common-bugs-and-pests-on-houseplants.htm