A good way to see if you have a Lasiodorides striatus or Aphonopelma seemani is to check the color or the spinnerets. I own both of these species. My L. striatus Ari has black spinnerets while my A. seemani Shiva has orange ones.
These get mixed up with A. seemani and come in shipments with other central american species. True A. seemanis are dark in coloration. Some of the "light forms" are actually A. burica, which go for around $60. The A. burica species has less striping on the knees and overall. Someone correct me here if I'm wrong. Lately, I've seen many that have been coming in as A. seemani light form, when actually they are A. burica.