Lasiodora difficilis, common name Brazilian red birdeater, is a species of tarantulas belonging to the family Theraphosidae.

[3] These tarantulas live in rainforests characterized by a wet tropical climate with little or no dry season and abundant rainfall.

[3] These spiders take refuge in a long hole or under roots or stones.

[5] Lasiodora difficilis can reach a body length of 9 centimetres (3.5 in), with a leg span of seven to eight inches.

[5] The basic color of these heavy-bodied spiders varies between black and black-gray, with urticating red hairs on the abdomen.