Netherlands ? A Dutch museum said Friday it is having trouble getting its hands on a parasite that just about everybody else is anxious to avoid: crabs.

The Rotterdam Natural History Museum has appealed for somebody – anybody – to give it a single crab louse for its collection, amid fears they may be dying out.

The donor’s anonymity, said curator Kees Moeliker, is guaranteed.

“We have over 300,000 species represented in our collection,” he said. “Even though most of them are not on display, that doesn’t mean small, unpopular insects are less important scientifically.”

Moeliker said he began hunting in earnest for the species, also known as “pubic lice,” last year after reading an article published by British doctors in the June issue of the journal of Sexually Transmitted Infections.

The article, titled “Did the Brazilian Kill the Pubic Louse?” found that crabs rates had fallen first in women, and several years later in men in Leeds. The authors hypothesized that the bikini wax known as “The Brazilian” that removes all or most pubic hair, might be to blame.