Tomocerus flavescens is a scarce species with very few recent records. The spines on the inner side of the dens are simple and there is a pair of large leaf-shaped scales present close to the point where the dentes join the manubrium (Figs. 1 and 2). The empodial appendage of the foot is about 0.7 times as long as the claw. The only specimens definitely of this species in the NHML slide collection were taken from Punchbowl Pool in Hampshire in August 1954. However, literature records indicate that Tomocerus flavescens is widespread and must be more common than records would indicate.

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Fig. 1 (above): Basal region of the dentes of Tomocerus flavescens collected from Punchbowl Pool, Hampshire in August 1954 by H.E. Goto.

Fig. 2 (above): Enlarged view of the region shown surrounded by the green box in Fig. 1. The spines on the inner side of the dens are simple and there is a large leaf-shaped scale present close to the point where each dens joins the manubrium.