• Variation and possible function of egg sac coloration in spiders 

      Barrantes Montero, Gilbert; Sandoval Vargas, Luis Andrés; Sánchez Quirós, Catalina; Bitton, Pierre Paul; Doucet, Stéphanie M. (2013)
      Coloration of the egg sacs of spiders varies widely to the human eye, both across and within taxonomic groups. These differences in coloration are expected with differences in the biology and ecology of different species. ...