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Long time and no ID, sorry for that! This beauty was an adult male of Cupiennius coccineus, currently in family Trechaleidae (that may change)
I think also this is Micrathena triserrata instead.
There are currently approximately 31 species of Micrathena for Central America alone. I love how people typically say M.sagittata or M.gracilis, but what about all the rest??!? This one seems most like Micrathena zilchi, but not recorded south of Honduras/El Salvador, so is quite an expansion of range into Costa Rica.
Not Wagneriana, it is Micrathena, it looks to be M. horrida (Taczanowski, 1873), ranging from Southern Mexico to Argentina. See Levi, 1985.
This is not a tarantula, but an very important one to recognise, the Wandering spider Phoneutria sp. (family Ctenidae). Based on your location P. boliviensis might be most likely but also P. fera and P. reidyi are quite possible. A ventral photograph of markings under the abdomen would have helped make a species identification. BUT please take care with these spiders, the venom can be medically significant.
Its either Phrynus or Paraphyrynus sp, based on the spine pattern on the palps. From the looks of it my money would be on Phrynus
http://arachnids.lifedesks.org/pages/210...
Sorry, not Thomisidae, something more like Miturgidae - Cheiracanthium
It's a wandering spider, most likely of the genus Phoneutria. It is important to have caution with these, the venom is potent.
