“Is this a flea larva?” asks this reader about the array of worm-like critters pictured below. She does not include any more context, and the photo is quite blurry, so it will not be possible for us to give her a straight answer that is 100% certain or accurate. Of course, we will still do the best we can. Now, we assume that although she refers to a larva in the singular, she is actually referring to all of the organisms pictured below. If not, then we do not know which one she is referring to and wondering if it is a flea larva. But, since the organisms all look similar, we feel safe in assuming she is referring to them all. If that is not the case, she is welcome to let us know and resubmit a new photo with the one particular critter she is wondering about.