Example of trunk anomalies in two specimens of "Haplophilus subterraneus". (A) Trunk shrinking (ventral view, anterior toward the top). The left side of the leg-bearing segments 75th-77th is collapsed to the point that only one (bifurcated) leg emerges from the pleural region. (B) Dorsal mispairing (dorsal view, anterior toward the top). Dorsal sclerites of leg-bearing segments 19th-20th, rather than being transversally oriented within a given segment, present discordant left/right serial position (or identity).