Callicebus.nl: I do not yet have the original description of Miranda Ribeiro (1914)
Cruz-Lima, 1945
Callicebus geoffroyi?
Modified forms of C. remulus have been found on the Iriri, affluent of the Xingú, and at Sao Joao on the AraguayaRiver. Possibly these specimens are the form that Miranda Ribeiro with certain reservations named C. geoffroyi.
Cruz Lima, 1945
Callicebus remulus
Synonyms: Callicebus remulus (Thomas, 1908); Callicebus geoffroyi (Miranda Ribeiro, 1914).
Remarks: Type in the BritishMuseum.
The individual variations found in the series of the Museu Goeldi give on the impression that all forms of “uapussas” on the lower Amazon are varieties of the same species which, in turn, is allied to species outside the zoogeographical Amazon province. By the colouring of its feet one specimen of C. remulus seems to be close to its neighbour C. hoffmannsi; by the dorsal colouring of the other specimens the individual variations seem to approximate this species to C. emiliae; and one individual with one of the extreme variations of ventral colouring approximates C. moloch. Because of this, only the comparison of a good series of skulls may, in the future, as unfortunately is so often the case in the classification of Amazionian monkeys, mark the true relationship of these forms. Miranda Ribeiro, has occasion to compare two skins which he had obtained at Urupa, on the Gy-parana, with those of the British museum collection, and although he allocated them to this species he makes reservations as to its validity, leaving for a future time his exposition of reasons. It should be noted that at the same locality and at Porto do Passagem on the Pimenta Bueno he obtained other specimens with a very pale colouring to which he gave the name C. geoffroyi and which he says are very close to I. Geoffroy’s plate, which does not seem to resemble closely Hoffmannsegg’s C. moloch. It is possible, therefore, that they are identical to the specimens we mentioned above which belonged to a dealer that buys for the German zoological gardens, all of which would strengthen our doubts. Lönnberg thinks that C. moloch and C. remulus are synonymous.
Hershkovitz, 1963
Callicebus moloch donacophilus
Synonyms: Callithrix donacophilus (d'Orbigny, 1836); Callicebus moloch donacophilus (Carbrera, 1958); Callicebus gigot donacophilus (Hill, 1960); Callicebus pallescens (Thomas, 1907); Callicebus moloch pallescens (Cabrera, 1958); Callicebus gigot pallescens (Hill, 1960); Callicebus geoffroyi (Miranda Ribeiro, 1914); Callicebus cinerascens (Miranda Ribeiro, 1914 (of Spix?)); Callicebus remulus (Miranda Ribeiro, 1914 – not Thomas).
Remarks: Callicebus moloch donacophilus is extremely pale in the southern and south-western part of its range. Elsewhere, it is difficult to distinguish from neighbouring races and allocations of some individuals may be arbitrary. Miranda Ribeiro (1914) referred one specimen from Urupá, Rio Jiparaná to Callicebus remulus. Another from the same locality was said to resemble much moloch but was described under the new name C. geoffroy. A third from higher up the Jiparaná at 12º S, was ascribed to Callicebus cinerascens but said to be much like C. melanochir of Bahia. The details of its colouration point only to donacophilus and true moloch. Geographically they are nearest the former to which they are assigned.
De Vivo, 1985
Callicebus moloch
Callicebus geoffroyi of Miranda-Ribeiro, 1914, type locality Urupa, Rondonia, was named after a single skin but was not formally described except for a comment on its similarity to a plate by I. Geoffroy (1844, plate 3) captioned as moloch Hoff. but that Miranda-Ribeiro did not consider to represent “true” moloch. I have not found the holotype of C. geoffroyi in the Museu Nacional but the skin of MNRJ 2925, without locality, is identified by Miranda-Ribeiro himself as geoffroyi (see also Avila-Pires, 1963). This skin is in poor condition but it compares favourably with I. Geoffroy’s plate which, in my opinion, represents an individual of C. moloch. The Museu Nacional specimen differs from the Nova Colina skin by having lighter throat and forehead. This type of variation, however, is found in other series of C. moloch I have examined. Therefore C. geoffroyi Miranda-Ribeiro should be considered a junior synonym of C. moloch Hoffmannsegg, 1807, and not of C. moloch donacophilus D’Orbigny, 1835, as proposed by Hershkovitz (1963).
Hershkovitz, 1990
Callicebus moloch
Synomyms: Callicebus moloch (Hoffmannsegg, 1807); Callithrix hypoxanta (Illeger, 1815); Callithrix hypokantha (Olfers, 1818); Callicebus remulus (Thomas, 1908), Callicebus emiliae (Thomas, 1911); Callicebus geoffroyi (Miranda Ribeiro, 1914).
Groves, 2001
Callicebus moloch
Synonyms: Cebus moloch (Hoffmannsegg, 1807); Callithrix hypoxantha (Illeger, 1815 – nom numen); Callithrix hypokantha (Olfers, 1818); Simia sakir (Giebel, 1855); Callicebus remulus (Thomas, 1908); Callicebus emiliae (Thomas, 1911) and Callicebus geoffroyi (Miranda Ribeiro, 1914).
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