Acanthophrynus

[2] Genetic comparison of populations of A. coronatus suggests that the species may actually represent more than one clade, with genetic divergence equivalent to that between different species in other genera.

[1] This tailless whipscorpion grows to a leg-span of about 18cm, being about 4cm wide, with a lifespan of around 7 years.

All of the legs are a lighter brown than the prosoma, reaching almost a yellow color.

[2][3] Acanthophrynus coronatus is found in Mexico, inhabiting deciduous tropical forests of the Pacific coastal region from southern Sonora to Oaxaca, including Baja California,[2] at elevations between 0 and 1900m above sea level, though its rare they surpass 1500m.

[4] This species, like all in the family Phrynidae, is nocturnal, remaining mostly in hiding during the day; they are mostly tree dwelling, and will rarely be seen on the ground.