Career
He was also interested in birds. He collected extensively between the 1930s and 50s and wrote "Os Roedores do Brasil" in 1952, a key book on Brazilian rodents. He was an authority on spiny rats of the genus Phyllomys.
Genus
Juscelinomys Moojen, 1965
Species and sub-species
Trinomys paratus Moojen, 1948
Trinomys gratiosus Moojen,1948
T. g. gratiosus Moojen, 1948
T. g. bonafidei Moojen, 1948
Phyllomys kerri Moojen, 1950
Juscelinomys candango Moojen, 1965
Kerodon acrobata Moojen, Locks & Langguth, 1997
PISCES – Characidae: Moojenichthys Ribeiro, 1956
OPILIONIDA – Gonyleptidae: Moojenia Mello Leitão, 1935
DIPLOPODA – Vanhoeffeniidae: Moojenodesmus Schubart, 1944
REPTILIA – Viperidae: Bothrops moojeni Hoge, 1965
SCORPIONIDA – Bothriuridae: Bothriurus moojeni Mello Leitão, 1945
SCOLOPENDROMORPHA – Scolopendridae: Scolopendra angulata moojeni Bücherl, 1941
RODENTIA – Echimyidae: Trinomys moojeni Pessôa, Oliveira & Reis, 1992
RODENTIA – Cricetidae: Oligoryzomys moojeni Weksler & Bonvicino, 2005.