[1][2][3] Gordonopsis mazupo was collected at a depth of 897 meters near the Zhongnan Seamount in the South China Sea in March 2021, during a cruise of the research vessel Tansuo-2.

[1] Third maxilliped pediform, covered with setae but unarmed; ischium rectangular, shorter than merus, with shallow longitudinal shallow groove; merus elongate, subovate, with angular external angle but unarmed, margin uneven and without spines or teeth; palp (carpus, propodus and dactylus) elongate, reaching to proximal margin of ischium.

[1] Gordonopsis mazupo most closely resembles G. pacifica from southernmost Japan in the general shape and swollen appearance of the carapace.

The length of the legs is more similar to G. hera from the Bismarck Sea, but that species has a less inflated carapace and stouter pseudochela claws.

[1] Gordonopsis mazupo is so far only known from the type locality, the Zhongnan Seamount in the central South China Sea, where it was collected at a depth of 897 m, associated with a bamboo coral.