Mygalomorphae http://naturdata.com/images/species/13000/thumbnail_1280529026.jpg http://naturdata.com/images/species/38000/Macrothele-calpeiana-38013-143099402955214-tb.jpg http://naturdata.com/images/species/13000/thumbnail_1256632442.jpg http://naturdata.com/images/species/38000/thumbnail_1256991879.jpg
Sempre: Quelíceras ortognatas (abrem para a frente). Machos com estruturas copulatórias simples. Olhos presentes e pequenos. 4 placas pulmonares. Fêmeas sem epigíneo.
Nunca: cores vivas.
http://naturdata.com/images/species/38000/thumbnail_1299426725.jpg
Araneomorphae
http://naturdata.com/images/species/13000/Agelena-labyrinthica-13303-144106269179294-tb.jpg http://naturdata.com/images/species/12000/thumbnail_1254586623.jpg http://naturdata.com/images/species/13000/thumbnail_1286630256.jpg http://naturdata.com/images/species/12000/Clubiona-corticalis-12838-137903127777621-tb.jpg
Sempre: Quelíceras labidognatas (Abrem para o lado). Palpos com maxilas.
Nunca: 4 placas pulmonares.
http://naturdata.com/images/species/12000/thumbnail_1299337796.jpg