Examples of alternative species of soil invertebrates for the standard laboratory toxicity assays: (A) Pontoscolex corethrurus; (B) Proisotoma minuta; (C) Porcellio dilatatus. Photos reproduced with permission from: (A) M. L. C. Bartz, picture of the species Pontoscolex corethrurus; (B) A. Buch picture of the species Proisotoma minuta; (C) L. P. Crescencio, picture of the species Porcellio dilatatus.