SPECIES

I chose an organism where anyone could possibly find anywhere in the world....ants! Ants are eusocial insects that belong to the family Formicidae and belong to the order Hymenoptera, along with wasps and bees. Ants came from wasp-like ancestors in the mid-Creteceous period between 110 and 130 million years ago. More than 12, 500 of an estimated total of 22,000 species of ants have been classified. Ants occupy a wide range of ecological niches, and are able to maneuver a wide range food resources either as direct or indirect herbivores, predators, and scavengers. I did a little research and I think this is how ants come to the CNMI...

"The records are also of interest in representing one of the

far-flung Pacific Islands, comparatively few of which have been

explored from an entomological point of view until recent years.

From Guam, some 125 miles south southwest, Wheeler (1912)

listed 21 species of ants. From Bikini Atoll, about 1200 miles

east, Cole (1949) enumerates 13 species taken in 1947. There

are doubtless numerous collections made in the 1940's whose

records are not presently available from this and other islands

of the area.

The ants of these three islands reflect the general nature of
ant distribution in the Pacific. Each contains tropicopolitan
species as the chief element of the fauna. All three contain the
large Odontomachus haematoda, the sole tropicopolitan species
of the primitive ant subfamily, the Ponerinae, although a second
species taken by Dr. Enders may represent another ponerine
becoming tropicopolitan. Each has two tiny species of Mono-
morium {destructor and floricola) of the subfamily Myrmicinae." (Weber, Neal) 

http://archive.org/stream/ants_10439/10439_djvu.txt