None of the other species of aquatic arthropod stained using the technique employed for L. salmonis and C. elongatus showed comparable positive staining. A. tonsa, E. affinis and D. magna all had a pair of granular DAB-positive regions present in the buccal cavity region. Both A. tonsa and E. affinis often showed a region of staining within the gut, but whether this represented secretions from the buccal cavity glands or food material could not be determined.
The egg strings of female E. affinis were generally the only other regions of the body to stain with DAB. Specimens of A. salina, and M. rosenbergii showed no definite staining, although a slight darkening of the general body tissues was often seen.