In fact, a lot of books, charts have, I give you some of my experience, generally look at the eggs, first of all, you first remember easy to remember: such as flagellates, presenting a waist drum shape.

Plasmodium, generally give you a blood smear, there are purple dots or a ring-like, divided into schizonts, trophozoites, ring-like, etc., more recognizable.

Pinworms: very transparent a kind of worm, the shape of the D-shaped

Schistosoma: you ruled out the liver schistosome (melon, spore-like), lung schistosome (large, with a tail young) is the Japanese blood schistosome, more cluttered, no very clear characteristics, but more look even if, a glance, you can see, you ruled out you know these, the rest is the blood schistosome is probably Japanese, Egyptian.

Hookworm: you remember the outside of a very thin layer, the top of an egg cover

As for what you said, I'm not sure of the filarial worms refer to that kind, I have a lot of information in this regard, if there is a need to pass it on to you, are some more typical pictures, the previous examination left, if you need to, private message, I send you.