Nduhungirehe said Rwanda, which is commemorating the 20th anniversary of the 1994 Genocide against the Tutsi, was not prepared to accept the continuous "punching exercise" by the Group of Experts.
"There is need to review the appointment of members of the panel of the Group of Experts," the diplomat said.
Monusco under pressure
Meanwhile, analysts say new allegations that Rwanda is helping the M23 to regroup could be designed to deflect attention from Monusco's failure to confront FDLR rebels after the defeat of M23.
Among its grievances, the M23 claimed the fight against the FDLR among its obligations because it was accusing the Congolese government army (FARDC) of failing to protect civilians in eastern DR Congo against attacks from the FDLR and other militias.
A number of declarations last week were sent Monusco's way, urging the body to intensify attacks against the FDLR, a group mostly made up of those largely responsible for the 1994 Genocide against the Tutsi.
Fresh calls for the UN mission to dismantle FDLR include one of the resolutions of the fifth Ordinary Summit of Heads of State and Government of the International Conference on the Great Lakes Region (ICGLR), in Luanda, Angola, last week.
ICGLR leaders cited the Democratic Forces for the Liberation of Rwanda (FDLR) and Uganda's Allied Democratic Forces (ADF) among negative forces that need to be uprooted from their hideouts in eastern DR Congo, and called on Monusco to intensify its operations against them.
Another call to dismantle FDLR was made last week by Russ Feingold, the US special envoy to the Great Lakes region.
"It is essential that Monusco, in accordance with its mission, steps up efforts to honour its commitment to conduct operations in support of fighting against the FDLR," Feingold said.
The head of Monusco, Martin Kobler, last week said the mission would finalise the review of its military deployment across eastern Dr Congo in a few weeks.
"We will then have a more flexible force. We need it to be more agile, ready to deploy when it is needed and where civilians are threatened, to take on the threat," Kobler, who is also special representative of the UN Secretary-General in DR Congo, said in a briefing to the Security Council.
Meanwhile, FDLR was this week blamed for the death of a game ranger in DR Congo.