Cave-dwelling bugs in Brazil, belonging to the rare Neotrogla genus, set themselves apart in more ways than one, National Geographic reported.

Scientists studying the bugs found that the females possess genitalia structurally and functionally similar to a penis, while the males use a vagina-like opening to distribute their sperm. The researchers published their study in the journal Current Biology.

"It was a surprise for all of us," Rodrigo Ferreira, the study's co-author, said. "This elaborate female penis is completely unique."

It's also quite fit.

Researchers looking at the copulating insects found the couples mated for an average of 50 hours, with one pairing hitting the 73-hour mark. The scientists said the findings could be used to test different hypotheses about sexual selection and the evolution of genitalia. Sarah Eberspacher

Statistically speaking, Seth Meyers said on Monday's Late Night, if you're someone close to President Trump, there's a "good chance" you're going to get raided by the FBI.

"At this point, even the kid who mowed the White House lawn is worried the FBI is going to kick in his door," Meyers said. First it was his former campaign chairman, Paul Manafort, and this month, agents raided the home, office, and hotel room of Trump's personal lawyer, Michael Cohen, who is under investigation for potential bank and wire fraud. Everyone is talking about whether Cohen will flip on Trump, Meyers said, and Cohen "isn't saying Trump is innocent, he's saying, 'I would never rat him out.' It's just taken for granted that Trump did something illegal."

Trump's former attorney, Jay Goldberg, told The Wall Street Journal last week that he warned Trump about Cohen, noting, "The mob was broken by Sammy 'The Bull' Gravano caving in out of the prospect of a jail sentence." "If Sammy 'The Bull' flipped, you know Michael 'The Bulls—t' definitely will," Meyers joked.

As for Trump, he tweeted over the weekend that he's "always liked and respected" Cohen, and "most people will flip if the government lets them out of trouble, even if it means lying or making up stories." Meyers wasn't shocked by Trump's statement. "Of course Trump assumes most people would lie to get out of trouble because he's always lying to get out of trouble," he said. "If the feds put pressure on him there's a good chance he'll flip on himself." Watch the video below.Catherine Garcia

Both Democrats and Republicans have voiced their concerns over President Trump's nominee to lead the Department of Veterans Affairs, White House physician Ronny Jackson, and the Senate on Monday postponed his confirmation hearing, The Washington Post reports.

The White House and other administration officials were quickly notified of the postponement, the Post says. Jackson, a former combat surgeon, was set to testify in front of the Senate Committee on Veterans' Affairs in two days.

Several lawmakers were concerned that Jackson does not have the experience to lead the VA, and took issue with how he managed the White House medical office, the Post reports. Two people told CBS News that the Senate Committee on Veterans' Affairs is looking into several allegations against Jackson, including that he drank excessively on the job, improperly dispensed medications, and created a hostile work environment. The last head of the VA, David Shulkin, was fired by President Trump in late March. Catherine Garcia

At least 20 people were killed when an airstrike hit a wedding party in northern Yemen, with the bride among the dead. The Monday airstrike in Hajja province was launched by the Saudi-led coalition fighting Houthi rebels.

Health officials told The Associated Press most of the dead were women and children who were standing under a tent. The groom and 44 others — including 33 kids — were wounded, with many suffering from shrapnel wounds or severed limbs.

This was the third airstrike to hit Yemeni civilians since Saturday, when a coalition airstrike killed 20 people on a bus in the western part of the country. Another airstrike that hit a house in Hajja on Sunday night left a family of five dead. The independent monitor Yemen Data Project estimates that of the 16,847 airstrikes to hit Yemen since the fighting started three years ago, a third of those strikes have hit civilian targets. Thousands of Yemenis have been killed in the war, which shows no sign of ending anytime soon. Catherine Garcia

On Monday, the Colorado Supreme Court ruled that Republican Rep. Doug Lamborn cannot appear on the June 26 primary ballot because the signatures his campaign gathered were invalid.

Five voters sued the Colorado secretary of state, saying that the 1,000 signatures necessary to get on the ballot didn't count because they were gathered by petition circulators who did not live in the state. Lamborn hired a firm called Kentucky Enterprises to collect the signatures, CBS Denver reports, which were approved by the secretary of state on March 29.

Earlier this month, a lower court ruled against the plaintiffs, but they appealed, leading to the state Supreme Court decision. An attorney for Lamborn's campaign said he plans on appealing. A six-term congressman, Lamborn represents the conservative 5th congressional district. Catherine Garcia

Former President George H.W. Bush was admitted to a Texas hospital Sunday morning with an infection, his office announced Monday.

Bush, 93, is at Houston Methodist Hospital, and is responding to treatments for an infection that spread to his blood, his office said, adding that he "appears to be recovering." Bush, whose wife, Barbara, died last week at age 92, was at her funeral on Saturday. Catherine Garcia

The Senate Foreign Relations Committee voted on Monday 10-9 in favor of Mike Pompeo, the CIA director, becoming the next secretary of state.

After saying he would oppose Pompeo's nomination, Sen. Rand Paul (R-Ky.) announced right before the vote that he had changed his mind, following a conversation with President Trump. The full Senate will vote later this week. Catherine Garcia

The temperature reached near 70 degrees in Washington, D.C., on Monday, so Sen. Rand Paul broke out his flip-flops.

The Kentucky Republican had long maintained his opposition to Mike Pompeo, President Trump's nominee for secretary of state, stating repeatedly that he intended to vote against Pompeo because of his hawkish instincts. During Pompeo's confirmation hearing before the Senate Foreign Relations Committee earlier this month, Paul pressed Pompeo over whether Trump's use of military force in Syria without congressional approval was constitutionally sound, and said that Pompeo's view of the war in Afghanistan is at odds with Trump's desire to withdraw from the country.

But on Monday, Paul said that after speaking to Trump and Pompeo, he had "received assurances" that Pompeo does not in fact want to prolong America's presence in Afghanistan. Trump "believes that Iraq was a mistake, that regime change has destabilized the region, and that we must end our involvement with Afghanistan," Paul wrote on Twitter, and on Monday he "received confirmation that [Pompeo] agrees" with Trump.

For that reason, Paul announced that he would vote to confirm Pompeo after all. With Paul's support, plus the backing of three moderate Senate Democrats, Pompeo seems poised for confirmation by the full Senate later this week.