Appearance
Armadillidium pulchellum closely resembles its congener A. pictum with roughly the same colourful brown, red and yellow patterns and also shares the dark epimerae on the 7th pereonite, clearly setting the two species off from the likes of A. vulgare or A. versicolor that also have somewhat similar colour variants, but never with the dark 7th epimerae.The two sibblings pulchellum and pictum can be told apart by size (pulchellum being notably smaller, but of course young pictum are smaller too), the shape of the hind corners of the first pereonite (cut off under an angle in pulchellum), the shape of the telson (more rounded-triangular in pictum and more trapezoid in pulchellum) and the configuration of the carinae between the scutellum (nose) and the eyes (but it requires very good photos).
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