Almost sure it's an alcimosphenus licinus or Dominican spider. This one has a parasite.
Yes this is an alcimosphenus licinus.Female characterized by bright red abdomen and cephalothorax with black markings and two parallel rows of trichobothria on the fourth femurs they look like a eyelashes. The elongated “tail” is sometimes forked and sometimes pointed.The male is tiny in size and orange in coloration. Has an oval abdomen with a dark posterior patch and ventrally a pair of white patches. The palps are rather large and bulbous in comparison to the spider’s body size. Also known as Orange-red orbweavers.
I wonder what keeps it from killing the big parasite larva…