Mesocupoides proporeius was named by Ponomarenko (1969). Its type specimen is PIN 2240/3, an exoskeleton, and it is an impression. Its type locality is Madygen, PIN collection 2240, Dzhailoucho area, which is in a Ladinian lacustrine - small siliciclastic in the Madygen Formation of Kyrgyzstan.

It was recombined as Kirghizocupes proporeius by Kirejtshuk et al. (2016); it was misspelled as Kirghizocupes proporeus by Kirejtshuk (2020).