cyanocoraxx: blue tarantula species(psednocnemis brachyramosa, cyriopagopus lividus, coremiocnemis
cyanocoraxx: blue tarantula species (psednocnemis brachyramosa, cyriopagopus lividus, coremiocnemis hoggi, orphnaecus sp panay, holothele sericea, sahydroaraneus raja, poecilotheria metallica, omothymus violaceopes) blue colouration evolved independently at least eight times in tarantulas. narrowband blue reflectance may be a result of a compromise between being chromatically conspicious and needing to be more difficult to detect - this is because some predators in tropical forest understories are sensitive to yellow-green wavelengths rather than blue. -- source link